Registration No. 333-

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                              --------------------

                                    FORM S-4
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                              --------------------

                     HEALTH AND RETIREMENT PROPERTIES TRUST
             (Exact name of registrant as specified in its charter)

     MARYLAND                               6798                 04-6558834
(State or other jurisdiction of (Primary Standard Industrial  (I.R.S. Employer
 incorporation or organization)  Classification Code Number) Identification No.)

                       400 CENTRE STREET, NEWTON, MA 02158
                                 (617) 332-3990
   (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                              --------------------

                                David J. Hegarty
                                    President
                     Health and Retirement Properties Trust
                                400 Centre Street
                                Newton, MA 02158
                                 (617) 332-3990
    (Name, address, including zip code, and telephone number, including area
                          code, of agent for service)
                              --------------------
                                    Copy to:
                       Alexander A. Notopoulos, Jr., Esq.
                            Sullivan & Worcester LLP
                             One Post Office Square
                                Boston, MA 02109
                                 (617) 338-2800

         Approximate  date of  commencement  of proposed sale to the public:  As
soon as practicable after the effective date of this Registration Statement.

         If the  securities  being  registered on this Form are being offered in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. |_|

         If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. |_|

         If this  form is a  post-effective  amendment  filed  pursuant  to Rule
462(d) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. |_|
                             ----------------------

                         CALCULATION OF REGISTRATION FEE




Title of Each Class of Securities to  Amount to be           Proposed Maximum             Proposed Maximum            Amount of
          be Registered                Registered        Offering Price Per Unit      Aggregate Offering Price   Registration Fee(1)
- ----------------------------------  -----------------  ----------------------------  --------------------------- -------------------
                                                                                                               
    6 3/4% Senior Notes Due 2002         $150,000,000                 --                       $150,000,000               $44,250
==================================  =================  ============================  =========================== ===================

<FN>
(1)  Pursuant to Rule 457(f)(2) of the  Securities Act of 1933, as amended,  the
     registration  fee  has  been  estimated  based  on the  book  value  of the
     securities to be received by the  Registrant in exchange for the securities
     to be issued hereunder in the Exchange Offer described herein.
</FN>

                             ----------------------
         The Registrant hereby amends this  Registration  Statement on such date
or dates as may be necessary to delay its  effective  date until the  Registrant
will file a further  amendment which  specifically  states that the Registration
Statement will  thereafter  become  effective in accordance with Section 8(a) of
the Securities Act of 1933, as amended, or until the Registration Statement will
become effective on such date as the Securities and Exchange Commission,  acting
pursuant to Section 8(a), may determine.






Information   contained  herein  is  subject  to  completion  or  amendment.   A
registration  statement  relating  to these  securities  has been filed with the
Securities  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective.  This  prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities of laws of any such State.

                   SUBJECT TO COMPLETION, DATED MARCH 12, 1998

                                OFFER TO EXCHANGE
                                 all outstanding
                          6 3/4% Senior Notes Due 2002
           which have not been registered under the Securities Act of
                                      1933

                                       for

                          6 3/4% Senior Notes Due 2002
                          which have been so registered

                                       of

                     Health and Retirement Properties Trust

                              -------------------

                  The Exchange Offer will expire at 5:00 p.m.,
                      New York City Time on ______________,
                              1998, unless extended

                  --------------------------------------------

            Health and  Retirement  Properties  Trust,  a Maryland  real  estate
investment  trust (the "Company" or "HRP"),  hereby  offers,  upon the terms and
subject to the  conditions  set forth in this  Prospectus  and the  accompanying
Letter of  Transmittal  (the  "Letter of  Transmittal"),  to exchange its 6 3/4%
Senior  Notes  Due  2002  (the  "New  Notes"),  in an  offering  which  has been
registered under the Securities Act of 1933, as amended (the "Securities  Act"),
pursuant to a  Registration  Statement of which this  Prospectus  constitutes  a
part, for an equal  principal  amount of its outstanding 6 3/4% Senior Notes due
2002 (the "Old  Notes"),  of which an  aggregate  of  $150,000,000  in principal
amount is  outstanding  as of the date hereof (the  "Exchange  Offer").  The New
Notes and the Old Notes are  sometimes  referred to herein  collectively  as the
"Notes."  The form and terms of the New  Notes  will be the same as the form and
terms  of the Old  Notes  except  that  the New  Notes  will  not  bear  legends
restricting  the  transfer  thereof.  The New Notes will be  obligations  of the
Company  entitled  to  the  benefits  of  the  Indenture  and  the  Supplemental
Indenture,  each dated as of December 18, 1997 (collectively,  the "Indenture"),
by and between the Company and State Street Bank and Trust  Company,  as trustee
(the  "Trustee"),  relating to the Notes.  See  "Description  of the New Notes."
Following the  completion of the Exchange  Offer,  none of the New Notes will be
entitled to any rights  under the  Registration  Rights  Agreement,  dated as of
December 18, 1997 (the  "Registration  Rights  Agreement"),  including,  but not
limited to,  contingent  increases  in the interest  rate  provided for pursuant
thereto.
                             ----------------------
          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
            COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION
               OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
                  ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
                       REPRESENTATION TO THE CONTRARY IS A
                                CRIMINAL OFFENSE.
                             ----------------------


               The date of this Prospectus is _____________, 1998.






         The  Company  will accept for  exchange  any and all Old Notes that are
validly  tendered on or prior to 5:00 p.m.,  New York City time, on the date the
Exchange Offer expires,  which will be ______________,  1998 unless the Exchange
Offer is extended (the "Expiration Date"). Tenders of Old Notes may be withdrawn
at any time prior to 5:00 p.m., New York City time, on the Expiration  Date. The
Exchange Offer is not conditioned upon any minimum principal amount of Old Notes
being tendered for exchange.

         The Old Notes were initially represented by a single,  permanent global
note (the "Global Note"), which was deposited with the Trustee, as custodian for
The Depository Trust Company ("DTC"),  and registered in the name of Cede & Co.,
DTC's nominee,  for credit to an account of a direct or indirect  participant in
DTC.  The New Notes  exchanged  for the Old Notes  that are  represented  by the
Global  Note will  continue  to be  represented  by a  permanent  global note in
definitive,  fully registered  form,  registered in the name of a nominee of DTC
and  deposited  with the Trustee as  custodian,  unless the  beneficial  holders
thereof  request  otherwise.  See  "Description  of the  New  Notes--Book  Entry
System."  Notes may be tendered only in  denominations  of $100,000 and integral
multiples of $1,000 in excess thereof.

         Interest on the New Notes will be payable  semi-annually  in arrears on
June  18 and  December  18 of each  year  (each  an  "Interest  Payment  Date"),
commencing  June 18, 1998 to the person in whose name the applicable New Note is
registered  at the close of business on the date (whether or not a business day)
15 calendar days preceding the applicable  Interest Payment Date or December 18,
2002 (the "Maturity Date").  Interest on the New Notes will accrue from the most
recent date to which  interest has been paid on the Old Notes or, if no interest
has been paid,  from December 18, 1997.  Accordingly,  interest that has accrued
since the last  Interest  Payment Date or December 18, 1997 (as the case may be)
on the Old Notes accepted for exchange will cease to be payable upon issuance of
the New  Notes.  Untendered  Old  Notes  that are not  exchanged  for New  Notes
pursuant to the  Exchange  Offer will remain  outstanding  and  continue to bear
interest at a rate of 6 3/4% per annum after the Expiration Date.

         Based on no-action  letters  issued by the staff of the  Securities and
Exchange  Commission (the  "Commission") to third parties,  the Company believes
the New Notes issued  pursuant to the Exchange  Offer may be offered for resale,
resold  and  otherwise  transferred  by a  holder  thereof  (other  than  (i)  a
broker-dealer  who acquires  such New Notes  directly from the Company to resell
pursuant to Rule 144A or any other available  exemption under the Securities Act
or (ii) a person that is an affiliate of the Company (within the meaning of Rule
405 under the Securities  Act)) without  compliance  with the  registration  and
prospectus  delivery  provisions of the Securities Act, provided that the holder
is acquiring the New Notes in the ordinary course of such holder's  business and
is not participating, and has no arrangement or understanding with any person to
participate,  in the distribution of the New Notes. Holders of Old Notes wishing
to accept the Exchange Offer must represent to the Company that such  conditions
have been met.  Each  broker-dealer  that receives New Notes for its own account
pursuant  to the  Exchange  Offer  must  acknowledge  that  it  will  deliver  a
prospectus  in  connection  with any  resale of such New  Notes.  The  Letter of
Transmittal  states that by so acknowledging  and by delivering a prospectus,  a
broker-dealer will not be deemed to admit that it is an "underwriter" within the
meaning  of the  Securities  Act.  This  Prospectus,  as it may  be  amended  or
supplemented  from time to time,  may be used by a  broker-dealer  in connection
with  resales of New Notes  received  in  exchange  for Old Notes where such Old
Notes  were  acquired  by  such  broker-dealer  as  a  result  of  market-making
activities or other trading  activities.  The Company has agreed for a period of
at least 120 days  after the  consummation  of the  Exchange  Offer to make this
Prospectus  available to any  broker-dealer  for use in connection with any such
resale. See "Plan of Distribution."

         Prior to the Exchange  Offer,  there has been no public  market for the
Old Notes or the New Notes. The Company does not intend to list the New Notes on
any securities  exchange or to seek approval for quotation through any automated
quotation  system.  There can be no assurance  that an active market for the New
Notes will develop. To the extent that a market for the New Notes develops,  the
market value of the New Notes will depend on market  conditions  (such as yields
on  alternative  investments),   general  economic  conditions,   the  Company's
financial  condition and other  conditions.  Such conditions might cause the New
Notes,  to the extent that they are actively  traded,  to trade at a significant
discount from the face value.

         The Company will not receive any proceeds from the Exchange Offer.  The
Company has agreed to bear the expenses of the Exchange Offer. No underwriter is
being used in connection with the Exchange Offer.

                                       ii





         THE  EXCHANGE  OFFER IS NOT BEING MADE TO, NOR WILL THE COMPANY  ACCEPT
SURRENDERS FOR EXCHANGE FROM,  HOLDERS OF OLD NOTES IN ANY JURISDICTION IN WHICH
THE EXCHANGE OFFER OR THE ACCEPTANCE THEREOF WOULD NOT BE IN COMPLIANCE WITH THE
SECURITIES OR BLUE SKY LAWS OF SUCH JURISDICTION.

         NEITHER THE FACT THAT A REGISTRATION  STATEMENT OR AN APPLICATION FOR A
LICENSE  HAS BEEN  FILED  WITH THE  STATE OF NEW  HAMPSHIRE  NOR THE FACT THAT A
SECURITY IS  EFFECTIVELY  REGISTERED OR A PERSON IS LICENSED IN THE STATE OF NEW
HAMPSHIRE  CONSTITUTES A FINDING BY THE SECRETARY OF STATE OF NEW HAMPSHIRE THAT
ANY DOCUMENT FILED UNDER RSA 421-B IS TRUE, COMPLETE AND NOT MISLEADING. NEITHER
ANY SUCH FACT NOR THE FACT THAT AN EXEMPTION  OR  EXCEPTION  IS AVAILABLE  FOR A
SECURITY OR A  TRANSACTION  MEANS THAT THE  SECRETARY OF STATE HAS PASSED IN ANY
WAY UPON THE MERITS OR  QUALIFICATIONS  OF, OR RECOMMENDED OR GIVEN APPROVAL TO,
ANY PERSON,  SECURITY,  OR  TRANSACTION,  IT IS UNLAWFUL TO MAKE, OR CAUSE TO BE
MADE,  TO ANY  PROSPECTIVE  PURCHASER,  CUSTOMER OR CLIENT,  ANY  REPRESENTATION
INCONSISTENT WITH THE PROVISIONS OF THIS PARAGRAPH.

                           --------------------------

                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act"),  and, in
accordance  therewith,  files reports,  proxy statements,  and other information
with the Securities and Exchange  Commission (the  "Commission").  Such reports,
proxy statements,  and other information concerning the Company can be inspected
and copied at the public  reference  facilities  maintained by the Commission at
450  Fifth  Street,  N.W.,  Room  1024,  Washington,  D.C.  20549,  and  at  the
Commission's Regional Offices at Seven World Trade Center, 13th Floor, New York,
New York 10048,  and  Citicorp  Center,  500 West  Madison  Street,  Suite 1400,
Chicago,  Illinois  60661.  Copies of such  materials  can be obtained  from the
Public Reference Section of the Commission at 450 Fifth Street, N.W., Room 1024,
Washington,  D.C. 20549, at prescribed rates. The Commission maintains a site on
the Internet's World Wide Web at http://www.sec.gov that contains reports, proxy
and information statements and other information regarding registrants that file
electronically  with the  Commission,  including the Company on and after August
14,  1996.  In  addition,   reports,  proxy  statements  and  other  information
concerning  the  Company  may also be  inspected  at the offices of the New York
Stock Exchange, 20 Broad Street, New York, New York 10005.

         The Company has filed with the Commission a  registration  statement on
Form S-4 (herein, together with all amendments and exhibits,  referred to as the
"Registration Statement") under the Securities Act with respect to the New Notes
offered  hereby.  This  Prospectus  does not contain all of the  information set
forth in the Registration  Statement and the exhibits thereto,  certain parts of
which  are  omitted  in  accordance  with  the  rules  and  regulations  of  the
Commission.  For  further  information  with  respect to the Company and the New
Notes offered hereby,  reference is hereby made to the  Registration  Statement,
including the exhibits thereto, which is available for inspection and copying as
set forth above.  Statements  contained in this Prospectus as to the contents of
any contract or other document referred to herein or therein are not necessarily
complete  (although  to the extent of the  provisions  referred to herein,  such
statements  are  complete  in  all  material  respects),  and in  each  instance
reference  is made to the copy of such  contract or other  document  filed as an
exhibit  to the  Registration  Statement  or  such  other  document,  each  such
statement being qualified in all respects by such reference.


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The following documents,  which have been filed by the Company with the
Commission,  are incorporated  herein by reference:  (i) Current Reports on Form
8-K dated February 11, 1998,  February 12, 1998, February 17, 1998, February 18,
1998,  February 19, 1998 and February 27, 1998,  (ii) Annual Report on Form 10-K
for the year  ended  December  31,  1997 and  (iii) the  consolidated  financial
statements of Marriott International,  Inc. ("MII"),  Commission No. 1-12188, at
and for the fiscal year ended  January 2, 1998,  as  contained  in MII's  Annual
Report on Form 10-K for the year ended January 2, 1998.  All documents  filed by
the Company pursuant to Section 13(a),

                                       iii





13(c),  14 or 15(d) of the  Exchange Act  subsequent  to the date of the initial
Registration  Statement  and  prior  to the  effectiveness  of the  Registration
Statement and  subsequent to the date of this  Prospectus  shall be deemed to be
incorporated  by reference into this Prospectus and to be a part hereof from the
date any such document is filed.

         Any  statement  contained  in a document  incorporated  or deemed to be
incorporated  by reference  herein shall be deemed to be modified or  superseded
for purposes of this Prospectus to the extent that a statement  contained herein
(or in any other  subsequently  filed  document which also is or is deemed to be
incorporated by reference  herein)  modifies or supersedes  such statement.  Any
such  statement  so modified  or  superseded  shall not be deemed,  except as so
modified or superseded, to constitute a part of this Prospectus.

         The Company will provide  without  charge to each person to whom a copy
of this Prospectus is delivered, upon written or oral request of such person, by
first  class mail or other  equally  prompt  means  within one  business  day of
receipt  of  such  request,  a copy  of any or  all of the  documents  that  are
incorporated by reference herein,  other than exhibits to such documents (unless
such exhibits are  specifically  incorporated by reference into such documents).
Requests  should be  directed to Health and  Retirement  Properties  Trust,  400
Centre  Street,  Newton,  Massachusetts  02158,  Attention:  Investor  Relations
(617-332-3990).  In order to  ensure  timely  delivery  of such  documents,  any
request should be made before ___________, 1998.

         NO  PERSON  HAS BEEN  AUTHORIZED  TO GIVE ANY  INFORMATION  OR MAKE ANY
REPRESENTATIONS   OTHER  THAN  THOSE   CONTAINED  IN  THIS  PROSPECTUS  AND  THE
ACCOMPANYING  LETTER OF TRANSMITTAL,  AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATIONS  MUST  NOT BE  RELIED  UPON AS  HAVING  BEEN  AUTHORIZED  BY THE
COMPANY. NEITHER THIS PROSPECTUS NOR THE ACCOMPANYING LETTER OF TRANSMITTAL,  OR
BOTH TOGETHER,  NOR ANY SALE MADE HEREUNDER SHALL UNDER ANY CIRCUMSTANCES CREATE
AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY SINCE
THE  DATE  HEREOF.  NEITHER  THIS  PROSPECTUS  NOR THE  ACCOMPANYING  LETTER  OF
TRANSMITTAL, OR BOTH TOGETHER,  CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF
AN  OFFER  TO  BUY  ANY  OF THE  SECURITIES  OFFERED  HEREBY  BY  ANYONE  IN ANY
JURISDICTION  IN WHICH SUCH OFFER OR  SOLICITATION IS NOT AUTHORIZED OR IN WHICH
THE PERSON MAKING SUCH OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANY
PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.

                           FORWARD LOOKING STATEMENTS

         THIS PROSPECTUS  CONTAINS FORWARD LOOKING  STATEMENTS.  SUCH STATEMENTS
ARE SUBJECT TO CERTAIN RISKS AND UNCERTAINTIES  WHICH COULD CAUSE ACTUAL RESULTS
TO DIFFER MATERIALLY FROM THOSE ANTICIPATED OR PROJECTED. PROSPECTIVE PURCHASERS
ARE CAUTIONED NOT TO PLACE UNDUE  RELIANCE ON THESE FORWARD  LOOKING  STATEMENTS
WHICH SPEAK ONLY AS OF THE DATE HEREOF.  THE COMPANY UNDERTAKES NO OBLIGATION TO
PUBLISH REVISED FORWARD  LOOKING  STATEMENTS TO REFLECT EVENTS OR  CIRCUMSTANCES
AFTER THE DATE HEREOF OR TO REFLECT THE  OCCURRENCE  OF PRESENTLY  UNANTICIPATED
EVENTS.



                                       iv







                                TABLE OF CONTENTS

                                                                          Page
Prospectus Summary...........................................................1
Use of Proceeds..............................................................8
The Exchange Offer...........................................................8
Description of the New Notes................................................15
Description of the Indenture................................................22
Certain Federal Income Tax Considerations...................................28
Plan of Distribution........................................................30
Transfer Restrictions.......................................................30
Legal Matters...............................................................31
Experts.....................................................................31
Unaudited Pro Forma Consolidated Financial Statements......................F-1


                                      


                               PROSPECTUS SUMMARY

         The  following  summary is  qualified in its entirety by, and should be
read in conjunction with, the more detailed information and financial statements
appearing elsewhere or incorporated by reference in this Prospectus.  References
in this  Prospectus  Summary  to the  "Company"  or "HRP"  include  consolidated
subsidiaries unless the context indicates otherwise.

                                   The Company

         The Company is one of the largest  publicly  traded REITs in the United
States with an equity market  capitalization  of  approximately  $2.0 billion at
December 31, 1997. The Company has investments of approximately  $2.2 billion in
217  properties  located in 33 states and the District of Columbia.  The Company
principally  invests in  healthcare  related  real  estate and office  buildings
leased to  various  agencies  of the  United  States  Government.  In  addition,
approximately 5% of the Company's  assets,  at cost, is an equity  investment in
Hospitality  Properties  Trust ("HPT"),  a New York Stock  Exchange  listed REIT
formed by the Company which invests in hotels.

         The  principal  executive  offices of the  Company  are  located at 400
Centre Street, Newton, MA 02158. Its telephone number is (617) 332-3990.


                   Summary of the Terms of the Exchange Offer


The Exchange Offer            The Company is  offering  to exchange  $100,000 in
                              principal amount (and integral multiples of $1,000
                              in excess  thereof) of New Notes for each $100,000
                              in principal amount (and any integral multiples of
                              $1,000 in excess  thereof)  of Old Notes  that are
                              validly  tendered  pursuant to the Exchange Offer.
                              The  Company  will  issue the New  Notes  promptly
                              after the Expiration  Date. As of the date of this
                              Prospectus,  $150,000,000  in aggregate  principal
                              amount of Old Notes are outstanding.

Resale                        The Company  believes,  based on no-action letters
                              issued by the  Commission to third  parties,  that
                              the New  Notes  issued  pursuant  to the  Exchange
                              Offer generally will be freely transferable by the
                              holders  thereof   without   registration  or  any
                              prospectus   delivery    requirement   under   the
                              Securities  Act,  except that a "dealer" or any of
                              the  Company's  "affiliates,"  as such  terms  are
                              defined under the  Securities  Act, that exchanges
                              Old Notes held for its own account may be required
                              to deliver copies of this Prospectus in connection
                              with  any  resale  of  the  New  Notes  issued  in
                              exchange  for such Old  Notes.  See "The  Exchange
                              Offer--General" and "Plan of Distribution."

Expiration Date               The Exchange  Offer will expire at 5:00 p.m.,  New
                              York  City  time,  on  ___________,  1998,  unless
                              extended, in which case the term "Expiration Date"
                              means  the  latest  date  and  time to  which  the
                              Exchange  Offer  is  extended.  The  Company  will
                              accept for exchange any and all Old Notes that are
                              validly  tendered in the  Exchange  Offer prior to
                              5:00 p.m.,  New York City time, on the  Expiration
                              Date.

Accrued Interest on the New
 Notes and the Old            Notes  Each New Note will bear  interest  from the
                              last Interest  Payment Date on which  interest was
                              paid on the Old Notes,  or if interest has not yet
                              been  paid on the Old  Notes,  from  December  18,
                              1997.  Such  interest  will be paid with the first
                              interest  payment on the New  Notes.  Accordingly,
                              interest which has accrued since the last Interest
                              Payment Date or December 18, 1997 (as the case may
                              be) on the Old Notes  accepted for  exchange  will
                              cease  to be  payable  upon  issuance  of the  New
                              Notes. Untendered Old Notes that are not exchanged
                              for New Notes


                              pursuant to the  Exchange  Offer will  continue to
                              bear  interest at a rate of 6 3/4% per annum after
                              the Expiration Date.

Termination                   The Company may terminate the Exchange Offer if it
                              determines  that its  ability to proceed  with the
                              Exchange Offer could be materially impaired due to
                              any  legal or  governmental  action,  any new law,
                              statute,  rule or regulation or any interpretation
                              by the  staff of the  Commission  of any  existing
                              law, statute,  rule or regulation.  Holders of Old
                              Notes will have certain rights against the Company
                              under the Registration Rights Agreement should the
                              Company fail to consummate the Exchange Offer. See
                              "The Exchange  Offer--Termination."  No federal or
                              state  regulatory  requirements  must be  complied
                              with or approvals  obtained in connection with the
                              Exchange Offer, other than applicable requirements
                              under federal and state securities laws.

Procedures for Tendering
  Old Notes                   Each  holder of Old Notes  wishing  to accept  the
                              Exchange  Offer must  complete,  sign and date the
                              Letter of Transmittal,  or a facsimile thereof, in
                              accordance with the instructions  contained herein
                              and therein,  and mail or  otherwise  deliver such
                              Letter of Transmittal, or such facsimile, together
                              with  such  Old  Notes  and  any  other   required
                              documentation  to  State  Street  Bank  and  Trust
                              Company, as Exchange Agent (the "Exchange Agent"),
                              at the address set forth  herein and  therein,  or
                              effect  a  tender  of Old  Notes  pursuant  to the
                              procedure for book-entry  transfer as provided for
                              herein.  By executing  the Letter of  Transmittal,
                              each holder will  represent  to the Company  that,
                              among  other  things,   the  New  Notes   acquired
                              pursuant to the Exchange  Offer are being obtained
                              in the  ordinary  course of business of the person
                              receiving  such  New  Notes,  whether  or not such
                              person is the holder,  that neither the holder nor
                              any  such  other  person  has  an  arrangement  or
                              understanding  with any person to  participate  in
                              the  distribution of such New Notes and, except as
                              otherwise  disclosed  in writing  to the  Company,
                              that  neither the holder nor any such other person
                              is an  "affiliate,"  as  defined in Rule 405 under
                              the  Securities  Act,  of  the  Company.   Certain
                              brokers,   dealers,    commercial   banks,   trust
                              companies and other nominees may effect tenders by
                              book-entry transfer,  including an Agent's Message
                              (defined   below)   in   lieu  of  a   Letter   of
                              Transmittal. See "The Exchange Offer -- Procedures
                              for Tendering."

Special Procedures for
  Beneficial Owners           Any   beneficial   owner   whose   Old  Notes  are
                              registered  in  the  name  of  a  broker,  dealer,
                              commercial  bank,  trust  company or other nominee
                              and who  wishes  to  tender  such Old Notes in the
                              Exchange  Offer  should  contact  such  registered
                              holder   promptly  and  instruct  such  registered
                              holder  to  tender  on  such  beneficial   owner's
                              behalf.  If such beneficial owner wishes to tender
                              on such owner's own behalf, such owner must, prior
                              to   completing   and   executing  the  Letter  of
                              Transmittal  and delivering his Old Notes,  either
                              make   appropriate    arrangements   to   register
                              ownership of the Old Notes in such owner's name or
                              obtain a  properly  completed  bond power from the
                              registered   holder.   The   transfer   of  record
                              ownership may take  considerable  time and may not
                              be able to be  completed  prior to the  Expiration
                              Date.

Guaranteed Delivery
  Procedures                  Holders of Old Notes who wish to tender  their Old
                              Notes and  whose  Old  Notes  are not  immediately
                              available or who cannot  deliver  their Old Notes,
                              the Letter of Transmittal  or any other  documents
                              required  by  the  Letter  of  Transmittal  to the
                              Exchange Agent prior to the  Expiration  Date must
                              tender their Old Notes

                                        2





                              according to the  guaranteed  delivery  procedures
                              set  forth  in  "The  Exchange   Offer--Guaranteed
                              Delivery Procedures."

Withdrawal                    Rights  Tenders of Old Notes may be  withdrawn  at
                              any time prior to 5:00  p.m.,  New York City time,
                              on the Expiration Date.

Acceptance of Old Notes
  and Delivery  of New Notes  Subject to certain conditions (as summarized above
                              in "Termination"  and described more fully in "The
                              Exchange  Offer--Termination"),  the Company  will
                              accept for exchange any and all Old Notes that are
                              validly  tendered in the  Exchange  Offer prior to
                              5:00 p.m.,  New York City time, on the  Expiration
                              Date.  The  New  Notes  issued   pursuant  to  the
                              Exchange   Offer   will  be   delivered   promptly
                              following the  Expiration  Date. See "The Exchange
                              Offer--General."

Certain Federal Income
  Tax Considerations          The exchange pursuant to the Exchange Offer should
                              generally  not  be a  taxable  event  for  federal
                              income tax  purposes.  For a discussion of certain
                              federal income tax considerations  relating to the
                              exchange  of the Old Notes for the New Notes,  see
                              "Certain Federal Income Tax Considerations."

Exchange Agent                The  Trustee  is  also  the  Exchange  Agent.  The
                              mailing  address of the Exchange Agent and address
                              for deliveries by registered or certified mail is:
                              State  Street  Bank and Trust  Company,  Corporate
                              Trust Department, Two International Place, Boston,
                              Massachusetts 02110,  Attention:  Sandy Wong. Hand
                              deliveries  or  overnight   deliveries  should  be
                              directed to State  Street Bank and Trust  Company,
                              Corporate  Trust  Department,   Two  International
                              Place,  Boston,  Massachusetts  02110,  Attention:
                              Sandy Wong.  For  information  with respect to the
                              Exchange  Offer,  the  telephone  number  for  the
                              Exchange Agent is (617) 664- 5590.

Use of Proceeds               There  will be no  cash  proceeds  payable  to the
                              Company   from  the  issuance  of  the  New  Notes
                              pursuant to the Exchange  Offer.  The net proceeds
                              received by the  Company  from the sale of the Old
                              Notes were used to reduce indebtedness outstanding
                              under  the  Company's  $450  million  bank  credit
                              facility and for general  business  purposes.  See
                              "Use of Proceeds."


                      Summary of the Terms of the New Notes

         The  Exchange  Offer  applies  to  an  aggregate  principal  amount  of
$150,000,000  of the Old Notes.  The form and terms of the New Notes will be the
same as the form and terms of the Old Notes,  except that the New Notes will not
bear legends restricting the transfer thereof. All capitalized terms used herein
and not defined herein have the meanings provided for in "Description of the New
Notes" and  "Description of the Indenture." The New Notes will be obligations of
the Company  entitled to the benefits of the Indenture.  See "Description of New
Notes."

Issuer....................... Health and Retirement Properties Trust.

Securities Offered........... $150,000,000  aggregate principal amount of 6 3/4%
                              Senior Notes due 2002.

Maturity..................... The New Notes will  mature on December  18,  2002,
                              unless previously redeemed.


                                        3





Interest Payment Dates....... Interest   on  the  New  Notes   will  be  payable
                              semi-annually  in arrears on June 18 and  December
                              18 of each year, commencing June 18, 1998.

Ranking...................... The New Notes will be senior unsecured obligations
                              of the  Company,  and will rank  equally  with the
                              Company's  other   unsecured  and   unsubordinated
                              indebtedness.  The New Notes  will be  effectively
                              subordinated   to  mortgages   and  other  secured
                              indebtedness  of the Company  and to  indebtedness
                              and other  liabilities  of any  subsidiary  of the
                              Company.

Optional Redemption.......... Until the date that is three months prior to their
                              stated  maturity  date,  the  New  Notes  will  be
                              redeemable, at the option of the Company, in whole
                              or in part, at a redemption price equal to the sum
                              of (i) the principal amount of the New Notes being
                              redeemed,  plus accrued and unpaid interest to but
                              excluding  the   redemption   date  and  (ii)  the
                              Make-Whole Amount. On and after such date, the New
                              Notes  will be  redeemable,  at the  option of the
                              Company,  in  whole or in  part,  at a  redemption
                              price  equal to the  principal  amount  of the New
                              Notes  being  redeemed,  plus  accrued  and unpaid
                              interest to but excluding the redemption date.

Limitations on Incurrence 
       of Debt............... The  New  Notes  will  contain  various  covenants
                              including the following:

                              (1) Neither the  Company  nor any  Subsidiary  (as
                              defined) may incur any Debt (as defined) if, after
                              giving effect  thereto,  the  aggregate  principal
                              amount of all outstanding  Debt of the Company and
                              its  Subsidiaries  on  a  consolidated   basis  is
                              greater  than  60% of  the  sum  ("Adjusted  Total
                              Assets") of (i) the Total  Assets (as  defined) of
                              the Company and its  Subsidiaries as of the end of
                              the  most  recent  calendar  quarter  and (ii) the
                              purchase  price  of  any  real  estate  assets  or
                              mortgages receivable  acquired,  and the amount of
                              any securities  offering proceeds received (to the
                              extent that such proceeds were not used to acquire
                              real estate assets or mortgages receivable or used
                              to reduce Debt),  by the Company or any Subsidiary
                              since the end of such calendar quarter,  including
                              those  proceeds  obtained in  connection  with the
                              incurrence of such additional Debt.

                              (2) Neither the  Company  nor any  Subsidiary  may
                              incur any Secured  Debt if,  after  giving  effect
                              thereto,  the  aggregate  principal  amount of all
                              outstanding  Secured  Debt of the  Company and its
                              Subsidiaries  on a  consolidated  basis is greater
                              than 40% of the Company's Adjusted Total Assets.

                              (3) Neither the  Company  nor any  Subsidiary  may
                              incur any Debt,  if, after giving effect  thereto,
                              the ratio of  Consolidated  Income  Available  for
                              Debt  Service  (as  defined)  to the  Annual  Debt
                              Service  (as  defined)  for the  four  consecutive
                              fiscal  quarters most recently  ended prior to the
                              date  on  which  such  additional  Debt  is  to be
                              incurred  shall  have been less than 1.5x on a pro
                              forma  basis  after   giving   effect  to  certain
                              assumptions.


                                        4





                              (4) The Company and its Subsidiaries will maintain
                              Total Unencumbered Assets of not less than 200% of
                              the aggregate  outstanding principal amount of the
                              Unsecured Debt (as defined) of the Company and its
                              Subsidiaries on a consolidated basis.

                              For a more complete  description  of the terms and
                              definitions  used  in  the  foregoing  summary  of
                              Limitations    on   Incurrence   of   Debt,    see
                              "Description of the New Notes--Certain Covenants."

Registration Rights.......... Pursuant  to  the  Registration  Rights  Agreement
                              entered  into by the Company  and  Merrill  Lynch,
                              Pierce,  Fenner & Smith Incorporated (the "Initial
                              Purchaser")  concurrently  with the closing of the
                              offering of the Old Notes,  the Company  agreed to
                              use its best  efforts to (i) file  within 105 days
                              of the  original  issuance  of the Old Notes  (the
                              "Issue Date"), a registration  statement under the
                              Securities Act (the "Exchange  Offer  Registration
                              Statement")  with respect to the  Exchange  Offer;
                              (ii)  cause  the   Exchange   Offer   Registration
                              Statement to be declared effective within 150 days
                              of the Issue Date;  and (iii)  cause the  Exchange
                              Offer to be consummated within the sooner to occur
                              of  45  days  after  the  effective  date  of  the
                              Exchange Offer Registration  Statement or 180 days
                              after the Issue  Date.  In certain  circumstances,
                              the   Company   will   agree   to   file  a  shelf
                              registration  statement  (the "Shelf  Registration
                              Statement")  for  resales  of the Old Notes by the
                              holders  thereof.  If the Company  does not comply
                              with its obligations under the Registration Rights
                              Agreement,  the  Company  will be  required to pay
                              Liquidated  Damages  to the  holders  of  the  Old
                              Notes. See "The Exchange Offer; General."




                                        5





                             Selected Financial Data

         Set forth  below are  selected  financial  data for the Company for the
periods and dates indicated.  This data should be read in conjunction  with, and
its  qualified in its entirety by reference  to, the  financial  statements  and
accompanying  notes  included in Item 7 of the Company's  Current Report on Form
8-K dated  February 27,  1998.  Amounts are in  thousands,  except for per share
information.




Income Statement Data:                                                 Year Ended December 31,
                                            -----------------------------------------------------------------------------
                                                  1997            1996            1995           1994           1993
                                            ---------------- --------------- -------------- --------------- -------------

                                                                                                       
Total Revenues                                      $208,863        $120,183       $113,322        $ 86,683      $ 56,485
Income before gain (loss) on sale of
  properties and extraordinary items                 112,204          77,164         61,760          57,878        37,738
Income before extraordinary items                    115,102          77,164         64,236          51,872        37,738
Net income                                           114,000          73,254         64,236          49,919        33,417
Funds from operations(1)                             146,312          99,106         84,638          71,851        46,566
Dividends declared(2)                                144,271          94,299         83,954          76,317        44,869


Basic earnings per common share amounts:
Income before gain (loss) on sale of
  properties and extraordinary items                    1.22            1.16           1.04            1.10          1.10
Income before extraordinary items                       1.25            1.16           1.08             .98          1.10
Net income                                              1.24            1.11           1.08             .95           .97
Funds from operations(1)                                1.59            1.50           1.43            1.36          1.35
Dividends declared(2)                                   1.46            1.42           1.38            1.33          1.30


Weighted average shares outstanding                   92,168          66,255         59,227          52,738        34,407



Balance Sheet Data:                                                        At December 31,
                                            -----------------------------------------------------------------------------
                                                  1997            1996            1995           1994           1993
                                            ---------------- --------------- -------------- --------------- -------------

                                                                                                       
Real estate properties, at cost                   $1,969,023      $1,005,739      $ 778,211       $ 673,083     $ 384,811
Real estate mortgages and notes                      104,288         150,205        141,307         133,477       157,281
Investment in HPT                                    111,134         103,062         99,959              --            --
Total assets                                       2,135,963       1,229,522        999,677         840,206       527,662
Total indebtedness                                   787,879         492,175        269,759         216,513        73,000
Total shareholders' equity                         1,266,260         708,048        685,592         602,039       441,135

<FN>
(1)      The Company's Funds From Operations ("FFO") represents net income (computed in accordance with
         generally accepted accounting principles ("GAAP")), before gain or loss on sale of properties and
         extraordinary items, depreciation and other non-cash items and includes HRP's pro rata share of HPT's
         FFO.  Management considers FFO to be a measure of the financial performance of an equity REIT that
         provides a relevant basis for comparison among REITs.  FFO does not represent cash flow from operating
         activities (as determined in accordance with GAAP) and should not be considered as an alternative to net
         income as an indicator of the Company's financial performance or to cash flows as a measure of liquidity.

(2)      Amounts represent  dividends declared with respect to the period shown.
         Distribution in excess of net income  generally  constitute a return of
         capital.
</FN>



                                        6





                       Ratio of Earnings to Fixed Charges

         The  following  table sets forth the Company's  consolidated  ratios of
earnings to fixed charges for the periods indicated:




                                                            For the year ended December 31,
                                        ----------  -----------------------------------------------
                                           1997        1996       1995        1994         1993
                                           ----        ----       ----        ----         ----
                                                                             
Ratio of earnings to fixed charges         3.9x        4.3x       3.4x        6.7x         6.8x



         The ratios of earnings to fixed charges  presented  above were computed
by dividing the Company's earnings by fixed charges. For this purpose,  earnings
have been  calculated  by adding fixed  charges to income  before  income taxes,
extraordinary items and gain or loss on the disposition of real property.  Fixed
charges consist of interest costs, whether expensed or capitalized, the interest
component of rental expense, if any, amortization of debt discounts and deferred
financing costs,  whether expensed or capitalized.  To date, the Company has not
issued any Preferred Shares;  therefore, the ratio of earnings to combined fixed
charges  and  Preferred  Shares  distributions  are the  same as the  ratios  of
earnings to fixed charges presented above.


                                        7





                                 USE OF PROCEEDS

         The Company will not receive any cash proceeds from the issuance of the
New  Notes  offered  hereby.  In  consideration  for  issuing  the New  Notes as
contemplated in this Prospectus,  the Company will receive in exchange Old Notes
in like principal amount, the terms of which are identical to the New Notes. The
Old Notes surrendered in exchange for New Notes will be retired and canceled and
cannot be  reissued.  Accordingly,  issuance of the New Notes will not result in
any increase in the indebtedness of the Company.

         The net  proceeds  to the  Company  from the sale of the Old  Notes was
approximately  $149  million.  The net  proceeds  were used in December  1997 to
reduce amounts  outstanding under the Company's $450 million unsecured revolving
credit facility with a syndicate of banks (the "Bank Credit Facility"),  and for
general business purposes.  Outstanding  amounts under the Company's Bank Credit
Facility  bear  interest,  at the  Company's  option,  at LIBOR plus a margin or
prime,  and the Bank Credit Facility  expires in 2001. At December 10, 1997, the
effective  interest rate on outstanding  amounts under the Bank Credit  Facility
was 6.55% per annum, and at March 5, 1998 such effective  interest rate was 6.4%
per annum.


                               THE EXCHANGE OFFER

General

         In connection with the sale of the Old Notes,  the Company entered into
the Registration  Rights Agreement,  which requires the Company to file with the
Commission a registration  statement under the Securities Act with respect to an
issue of senior  notes of the  Company  with  terms  identical  to the Old Notes
(except with respect to restrictions on transfer) and to use its best efforts to
cause such  registration  statement to become effective under the Securities Act
by no later than May 15, 1998 and, upon the  effectiveness of such  registration
statement,  to offer to the  holders  of the Old  Notes the  opportunity,  for a
period of not less than 20 business  days (or longer if  required by  applicable
law) from the date the notice of the Exchange  Offer is mailed to holders of the
Old Notes, to exchange their Old Notes for a like principal amount of New Notes.
The Exchange Offer is being made pursuant to the  Registration  Rights Agreement
to satisfy the Company's obligations thereunder.

         Under  existing   interpretations   of  the  staff  of  the  Commission
enunciated in no-action letters issued to third parties, the New Notes would, in
general,  be  freely  transferable  after the  Exchange  Offer  without  further
registration  under the  Securities  Act by holders  thereof  (other  than (i) a
broker-dealer  who acquires  such New Notes  directly from the Company to resell
pursuant to Rule 144A or any other available  exemption under the Securities Act
or (ii) a person that is an affiliate of the Company  within the meaning of Rule
405 under the Securities  Act),  without  compliance with the  registration  and
prospectus  delivery  provisions of the Securities  Act,  provided that such New
Notes are acquired in the  ordinary  course of such  holders'  business and such
holders have no arrangements  with any person to participate in the distribution
of such New Notes.  Eligible  holders  wishing to accept the Exchange Offer must
represent to the company that such conditions have been met. Each  broker-dealer
that receives New Notes for its own account  pursuant to the Exchange Offer must
acknowledge  that it will deliver a prospectus in connection  with any resale of
such New Notes.

         In the event that (i) the Exchange Offer is not consummated  within the
earlier of 45 days of the  effective  date of the  Exchange  Offer  Registration
Statement or 180 days after the Issue Date; or (ii) in the case of any holder of
Old Notes that  participates in the Exchange Offer, such holder does not receive
freely  tradeable New Notes on the date of such  exchange,  the Company will, at
its own  expense,  (a) as promptly  as  practicable,  file a shelf  registration
statement,  (b) use its best efforts to cause such Shelf Registration  Statement
to be declared  effective  under the  Securities  Act as promptly as practicable
after  the  filing of such  Shelf  Registration  Statement  and (c) use its best
efforts to keep effective such Shelf  Registration  Statement in order to permit
the prospectus forming a part thereof to be usable by holders of Old Notes for a
period of two years after the effective date of the Shelf Registration Statement
(or, the shorter  period  provided by Rule 144(k) under the  Securities  Act) or
such shorter  period that will  terminate  when all the Old Notes covered by the
Shelf  Registration  Statement have been sold pursuant to the Shelf Registration
Statement.


                                        8





Terms of the Exchange Offer

         Upon  the  terms  and  subject  to the  conditions  set  forth  in this
Prospectus  and in the  accompanying  Letter of  Transmittal,  the Company  will
accept all Old Notes validly tendered prior to 5:00 p.m., New York City time, on
the Expiration  Date. The Company will issue $100,000 in principal amount of New
Notes (and  integral  multiples of $1,000 in excess  thereof) in exchange for an
equal  principal  amount of  outstanding  Old Notes tendered and accepted in the
Exchange  Offer.  Holders may tender some or all of their Old Notes  pursuant to
the Exchange Offer in any  denomination of $100,000 or in integral  multiples of
$1,000 in excess thereof.

         The form and  terms of the New  Notes  will be the same as the form and
terms  of the Old  Notes  except  that  the New  Notes  will  not  bear  legends
restricting the transfer  thereof.  The New Notes will evidence the same debt as
the Old Notes.  The New Notes will be issued  under and entitled to the benefits
of the Indenture.

         As of the  date  of this  Prospectus,  $150,000,000  million  aggregate
principal amount of the Old Notes are outstanding and CEDE & Co., the nominee of
DTC, is the only registered  holder thereof.  In connection with the issuance of
the Old Notes, the Company arranged for the Old Notes to be eligible for trading
in the Private Offering,  Resale and Trading through Automated Linkages (PORTAL)
Market, the National Association of Securities Dealers' screen based,  automated
market  trading of  securities  eligible for resale  under Rule 144A,  and to be
issued and  transferable  in book-entry  form through the facilities of DTC. The
New Notes will also be issuable and transferable in book-entry form through DTC.

         This Prospectus,  together with the accompanying Letter of Transmittal,
is being sent to all registered  holders as of  ____________,  1998 (the "Record
Date").

         The Company shall be deemed to have accepted validly tendered Old Notes
when,  as and if the  Company  has given oral or written  notice  thereof to the
Exchange Agent.  See "Exchange  Agent." The Exchange Agent will act as agent for
the  tendering  holders of Old Notes for the purpose of receiving New Notes from
the Company and delivering New Notes to such holders.

         If any tendered  Old Notes are not accepted for exchange  because of an
invalid  tender or the  occurrence  of certain  other  events set forth  herein,
certificates  for any  such  unaccepted  Old  Notes  will be  returned,  without
expense,  to the tendering  holder thereof as promptly as practicable  after the
Expiration Date.

         The  Company  will pay all  charges and  expenses,  other than  certain
applicable  taxes,  in  connection  with  the  Exchange  Offer.  See  "Fees  and
Expenses."

         Holders of Old Notes do not have any  appraisal or  dissenters'  rights
under  applicable  Maryland law or the Indenture in connection with the Exchange
Offer.  The Company intends to conduct the Exchange Offer in accordance with the
provisions of the Registration Rights Agreement and the applicable  requirements
of the Exchange Act and the rules and regulations of the Commission  thereunder.
Old Notes that are not tendered  for exchange in the Exchange  Offer will remain
outstanding  and  continue to accrue  interest,  but will not be entitled to any
rights or benefits under the Registration Rights Agreement.

         Each holder of Old Notes who wishes to exchange Old Notes for New Notes
in the  Exchange  Offer  will  be  required  to  make  certain  representations,
including that (i) it is neither an affiliate of the Company nor a broker-dealer
tendering Old Notes acquired directly from the Company for its own account, (ii)
any New Notes to be received by it were  acquired in the ordinary  course of its
business and (iii) at the time of  commencement of the Exchange Offer, it has no
arrangement  with any person to  participate  in the  distribution  (within  the
meaning of the Securities Act) of the New Notes. In addition, in connection with
any resales of New Notes, any  broker-dealer (a  "Participating  Broker-Dealer")
who  acquired  Old  Notes  for its own  account  as a  result  of  market-making
activities or other  trading  activities  must deliver a prospectus  meeting the
requirements  of the  Securities  Act in  connection  with any resale of the New
Notes.  See "Plan of  Distribution."  The Commission has taken the position,  in
no-action letters issued to third parties, that Participating Broker-


                                       8


Dealers may fulfill their prospectus  delivery  requirements with respect to the
New Notes (other than a resale of an unsold allotment from the original sales of
Old Notes) with this Prospectus.  Under the Registration  Rights Agreement,  the
Company is required to allow Participating Broker-Dealers (and other persons, if
any, subject to similar prospectus delivery requirements) to use this Prospectus
in connection with the resale of such New Notes, provided,  however, the Company
shall  not be  required  to amend or  supplement  such  prospectus  for a period
exceeding 120 days after the  effectiveness  of the Exchange Offer  Registration
Statement.

         If (a) the Company fails to consummate  the Exchange Offer on or before
the 45th day after the effective date of the Registration  Statement or 180 days
after the Issue Date or (b) either the Exchange Offer Registration  Statement or
the Shelf Registration  Statement is declared effective but thereafter ceases to
be  effective  in  connection  with resales of Old Notes or New Notes during the
period specified in the Registration  Rights Agreement (each such event referred
to in clauses (a) and (b) above a "Registration Default"), then the Company will
pay to each  holder of the Old Notes,  accruing  from the date of the first such
Registration  Default (or if such Registration  Default has been cured, from the
date  of  the  next  Registration  Default),   liquidated  damages  ("Liquidated
Damages") in an amount equal to 0.50% per annum of the  principal  amount of the
Old Notes held by such holder.  Following the cure of all Registration Defaults,
the accrual of Liquidated Damages will cease.

         If the Exchange Offer is consummated in accordance  with the provisions
of the Registration  Rights  Agreement  described above, the Company will not be
required to file a Shelf Registration  Statement to register any outstanding Old
Notes,  and the interest rate on such Old Notes will remain at its initial level
of 6 3/4% per annum. The Exchange Offer shall be deemed to have been consummated
upon the Company's having  exchanged,  pursuant to the Exchange Offer, New Notes
for all Old Notes that have been  properly  tendered  and not  withdrawn  by the
Expiration  Date. In such event,  holders of Old Notes not  participating in the
Exchange Offer who are seeking  liquidity in their investment would have to rely
on exemptions to registration  requirements under the securities laws, including
the Securities Act.

         Based on no-action  letters  issued by the staff of the  Commission  to
third parties,  the Company  believes that the New Notes issued  pursuant to the
Exchange  Offer in exchange for Old Notes may be offered for resale,  resold and
otherwise  transferred by holders thereof (other than any such holder that is an
"affiliate"  of the Company  within the meaning of Rule 405 under the Securities
Act)  without   compliance  with  the  registration   and  prospectus   delivery
requirements of the Securities Act, provided that such New Notes are acquired in
the  ordinary  course  of  such  holders'  business  and  such  holders  have no
arrangement  with any  person to  participate  in the  distribution  of such New
Notes. Any holder of Old Notes who tenders in the Exchange Offer for the purpose
of  participating  in a  distribution  of the  New  Notes  cannot  rely  on such
interpretation  by  the  staff  of the  Commission  and  must  comply  with  the
registration  and  prospectus  delivery  requirements  of the  Securities Act in
connection with any resale  transaction.  Each  broker-dealer  that receives New
Notes for its own account in exchange  for Old Notes,  where such Old Notes were
acquired by such broker-dealer as a result of market-making  activities or other
trading  activities,  must  acknowledge  that it will  deliver a  prospectus  in
connection with any resale of such New Notes.

Expiration Date; Extensions; Amendments

         The term "Expiration  Date" shall mean 5:00 p.m. New York City time, on
_________, 1998 unless the Company, in its sole discretion, extends the Exchange
Offer,  in which case the term  "Expiration  Date" shall mean the latest date to
which the Exchange Offer is extended.

         In order to extend the  Expiration  Date,  the Company  will notify the
Exchange  Agent of any extension by oral or written  notice and will mail to the
record holders of Old Notes an  announcement  thereof,  each prior to 9:00 a.m.,
New York City time,  on the next  business  day after the  previously  scheduled
Expiration  Date. Such  announcement may state that the Company is extending the
Exchange Offer for a specified period of time.

         The  Company  reserves  the  right (i) to delay  acceptance  of any Old
Notes,  to extend the Exchange  Offer or to terminate the Exchange  Offer and to
refuse to accept Old Notes not previously accepted, if any of the conditions set
forth herein  under  "Termination"  shall have  occurred and shall not have been
waived by the Company (if permitted to be waived by the Company), by giving oral
or written notice of such delay, extension or termination to the Exchange Agent,
and (ii) to amend the terms of the Exchange  Offer in any manner deemed by it to
be advantageous  to the holders of the Old Notes.  Any such delay in acceptance,
extension,  termination or amendment will be followed as promptly as practicable
by oral or written notice thereof. If the Exchange Offer is amended in

                                       10





a manner determined by the Company to constitute a material change,  the Company
will  promptly  disclose  such  amendment in a manner  reasonably  calculated to
inform the holders of the Old Notes of such amendment.

         Without  limiting  the manner in which the  Company  may choose to make
public  announcements  of any delay in  acceptance,  extension,  termination  or
amendment  of the  Exchange  Offer,  the  Company  shall have no  obligation  to
publish, advertise, or otherwise communicate any such public announcement, other
than by making a timely release to the Dow Jones News Service.

Interest on the New Notes

         The New Notes will bear interest from the last Interest Payment Date on
which  interest was paid on the Old Notes,  or if interest has not yet been paid
on the Old Notes,  from  December 18, 1997.  Such interest will be paid with the
first interest payment on the New Notes.  Interest on the Old Notes accepted for
exchange will cease to accrue upon issuance of the New Notes.

         The  New  Notes  will  bear  interest  at a rate of 6 3/4%  per  annum.
Interest  on the New Notes  will be  payable  semi-annually,  in arrears on each
Interest  Payment  Date  following  the  consummation  of  the  Exchange  Offer.
Untendered  Old  Notes  that are not  exchanged  for New Notes  pursuant  to the
Exchange  Offer will  continue  to bear  interest  at a rate of 6 3/4% per annum
after the Expiration Date.

Procedures for Tendering

         To tender in the Exchange Offer, a holder must complete,  sign and date
the Letter of Transmittal,  or a facsimile thereof,  have the signatures thereon
guaranteed  if  required  by the Letter of  Transmittal,  and mail or  otherwise
deliver  such Letter of  Transmittal  or such  facsimile  or an Agent's  Message
(defined  below)  in lieu  thereof,  together  with the Old  Notes  (unless  the
book-entry transfer procedures  described below are used) and any other required
documents,  to the Exchange  Agent for receipt prior to 5:00 p.m., New York City
time, on the Expiration Date.

         The  term  "Agent's  Message"  means a  message,  transmitted  by DTC's
Book-Entry  Transfer Facility system to, and received by, the Exchange Agent and
forming a part of a Book-Entry Confirmation,  which states that DTC's Book-Entry
Transfer  Facility  system  has  received  an  express  acknowledgment  from the
participant in DTC's  Book-Entry  Transfer  Facility system  tendering Old Notes
which are the subject of such Book-Entry  Confirmation that such participant has
received and agrees to be bound by the terms of the Letter of  Transmittal,  and
that the Company may enforce such agreement against such  participant.  The term
"Book-Entry  Confirmation" means a timely confirmation of book-entry transfer of
Old Notes to the Exchange Agent's account at DTC's Book-Entry  Transfer Facility
system.

         Any financial  institution  that is a participant  in DTC's  Book-Entry
Transfer  Facility  system  may make  book-entry  delivery  of the Old  Notes by
causing  DTC to transfer  such Old Notes into the  Exchange  Agent's  account in
accordance  with DTC's  procedure for such  transfer.  Although  delivery of Old
Notes may be effected  through  book-entry  transfer  into the Exchange  Agent's
account at DTC, an Agent's  Message must be  transmitted  to and received by the
Exchange  Agent on or prior to the  Expiration  Date at one of its addresses set
forth in this Prospectus,  or the Letter of Transmittal (or facsimile  thereof),
with any required signature guarantees and any other required documents, must be
transmitted  to and received or confirmed by the Exchange Agent at its addresses
set forth in this  Prospectus  prior to 5:00 p.m.,  New York City  time,  on the
Expiration Date.  DELIVERY OF DOCUMENTS TO DTC IN ACCORDANCE WITH ITS PROCEDURES
DOES NOT  CONSTITUTE  DELIVERY TO THE EXCHANGE  AGENT.  All  references  in this
Prospectus  to deposit or delivery of Old Notes shall be deemed to include DTC's
book-entry delivery method.

         The  tender by a holder  of Old  Notes  will  constitute  an  agreement
between such holder and the Company in accordance  with the terms and subject to
the conditions set forth herein and in the Letter of Transmittal.

         Delivery of all  documents  must be made to the  Exchange  Agent at its
address  set forth  herein.  Holders  may also  request  that  their  respective
brokers,  dealers,  commercial  banks,  trust  companies or nominees effect such
tender for such holders.

                                       11





         The method of delivery of Old Notes and the Letter of  Transmittal  and
all other  required  documents to the Exchange Agent is at the election and risk
of the holders.  Instead of delivery by mail, it is recommended that holders use
an overnight or hand delivery service.  In all cases,  sufficient time should be
allowed to assure timely delivery.  No Letter of Transmittal or Old Notes should
be sent to the Company.

         Only a holder of Old Notes may  tender  such Old Notes in the  Exchange
Offer.  The term "holder" with respect to the Exchange Offer means any person in
whose  name Old Notes are  registered  on the books of the  Company or any other
person  who has  obtained a properly  completed  bond power from the  registered
holder or any  person  whose Old Notes are held of record by DTC who  desires to
deliver such Old Notes by book-entry transfer at DTC.

         Any beneficial holder whose Old Notes are registered in the name of his
broker,  dealer,  commercial bank, trust company or other nominee and who wishes
to tender  should  contact such  registered  holder  promptly and instruct  such
registered  holder to tender on his behalf.  If such beneficial holder wishes to
tender on his own behalf,  such beneficial  holder must, prior to completing and
executing the Letter of Transmittal  and  delivering his Old Notes,  either make
appropriate arrangements to register ownership of the Old Notes in such holder's
name or obtain a properly  completed bond power from the registered  holder. The
transfer of record ownership may take considerable time.

         Signatures on a Letter of Transmittal or a notice of withdrawal, as the
case may be,  must be  guaranteed  by a  member  firm of a  registered  national
securities exchange or of the National Association of Securities Dealers,  Inc.,
a commercial  bank or trust  company  having an office or  correspondent  in the
United States or an "eligible guarantor  institution" within the meaning of Rule
17Ad-15 under the Exchange Act (an "Eligible Institution") that is a participant
in a  recognized  medallion  signature  guarantee  program  unless the Old Notes
tendered  pursuant  thereto are tendered (i) by a registered  holder who has not
completed the box entitled "Special Issuance  Instructions" or "Special Delivery
Instructions"  on the  Letter  of  Transmittal  or (ii)  for the  account  of an
Eligible Institution.

         If the  Letter of  Transmittal  is signed  by a person  other  than the
registered  holder  of any Old Notes  listed  therein,  such Old  Notes  must be
endorsed or accompanied by appropriate  bond powers which  authorize such person
to  tender  the Old Notes on behalf of the  registered  holder,  in either  case
signed as the name of the registered holder or holders appears on the Old Notes.

         If the Letter of Transmittal or any Old Notes or bond powers are signed
by trustees, executors, administrators,  guardians, attorneys-in-fact,  officers
of corporations or others acting in a fiduciary or representative capacity, such
persons  should so indicate  when  signing,  and unless  waived by the  Company,
submit  evidence  satisfactory  to the Company of their authority to so act with
the Letter of Transmittal.

         All questions as to the validity,  form, eligibility (including time of
receipt), acceptance and withdrawal of the tendered Old Notes will be determined
by the Company in its sole  discretion,  which  determination  will be final and
binding. The Company reserves the absolute right to reject any and all Old Notes
not properly tendered or any Old Notes the Company's  acceptance of which would,
in the  opinion of counsel  for the  Company,  be  unlawful.  The  Company  also
reserves the absolute right to waive any  irregularities or conditions of tender
as to  particular  Old  Notes.  The  Company's  interpretation  of the terms and
conditions of the Exchange Offer  (including the  instructions  in the Letter of
Transmittal)  will be final and  binding  on all  parties.  Unless  waived,  any
defects or  irregularities in connection with tenders of Old Notes must be cured
within such time as the  Company  shall  determine.  Neither  the  Company,  the
Exchange Agent nor any other person shall be under any duty to give notification
of defects or irregularities  with respect to tenders of Old Notes nor shall any
of them incur any  liability for failure to give such  notification.  Tenders of
Old Notes will not be deemed to have been made until  such  irregularities  have
been cured or waived.  Any Old Notes received by the Exchange Agent that are not
properly  tendered and as to which the defects or  irregularities  have not been
cured or waived  will be  returned  without  cost by the  Exchange  Agent to the
tendering  holder of such Old Notes unless  otherwise  provided in the Letter of
Transmittal as soon as practicable following the Expiration Date.

         In addition,  the Company  reserves the right in its sole discretion to
(a) purchase or make offers for any Old Notes that remain outstanding subsequent
to the Expiration Date, or, as set forth under "Termination," to terminate

                                       12





the Exchange Offer and (b) to the extent  permitted by applicable law,  purchase
Old Notes in the open market, in privately negotiated transactions or otherwise.
The terms of any such  purchases  or  offers  may  differ  from the terms of the
Exchange Offer.

Guaranteed Delivery Procedures

         Holders who wish to tender  their Old Notes and (i) whose Old Notes are
not  immediately  available,  or (ii) who cannot  deliver  their Old Notes,  the
Letter of  Transmittal  or any other  required  documents to the Exchange  Agent
prior to the  Expiration  Date, or if such holder cannot  complete the procedure
for book-entry transfer on a timely basis, may effect a tender if:

                  (a)  the tender is made through an Eligible Institution;

                  (b) prior to the Expiration  Date, the Exchange Agent receives
         from such Eligible  Institution a properly  completed and duly executed
         Notice of Guaranteed Delivery (by facsimile transmission,  mail or hand
         delivery)  setting  forth the name and address of the holder of the Old
         Notes,  the  certificate  number or  numbers  of such Old Notes and the
         principal  amount of Old Notes  tendered,  stating  that the  tender is
         being made thereby,  and guaranteeing  that, within three business days
         after the  Expiration  Date,  the Letter of  Transmittal  (or facsimile
         thereof),  together with the certificate(s)  representing the Old Notes
         (unless  the  book-entry  transfer  procedures  are to be  used)  to be
         tendered in proper form for transfer and any other  documents  required
         by the  Letter  of  Transmittal,  will  be  deposited  by the  Eligible
         Institution with the Exchange Agent; and

                  (c) such properly completed and executed Letter of Transmittal
         (or facsimile thereof),  together with the certificate(s)  representing
         all tendered Old Notes in proper form for transfer (or  confirmation of
         a book-entry  transfer into the Exchange  Agent's account at DTC of Old
         Notes delivered electronically) and all other documents required by the
         Letter of  Transmittal  are received by the Exchange Agent within three
         business days after the Expiration Date.

         Upon request to the Exchange  Agent,  a Notice of  Guaranteed  Delivery
will be sent to  holders  who wish to tender  their Old Notes  according  to the
guaranteed delivery procedures set forth above.

Withdrawal of Tenders

         Except  as  otherwise  provided  herein,  tenders  of Old  Notes may be
withdrawn at any time prior to 5:00 p.m.,  New York City time, on the Expiration
Date.

         To withdraw a tender of Old Notes in the Exchange  Offer,  a written or
facsimile  transmission  notice of  withdrawal  must be received by the Exchange
Agent at its address set forth herein prior to 5:00 p.m., New York City time, on
the Expiration  Date. Any such notice of withdrawal must (i) specify the name of
the person  having  deposited the Old Notes to be withdrawn  (the  "Depositor"),
(ii) identify the Old Notes to be withdrawn (including the certificate number or
numbers  and  principal  amount  of such  Old  Notes),  (iii) be  signed  by the
Depositor  in the  same  manner  as the  original  signature  on the  Letter  of
Transmittal  by which  such Old Notes  were  tendered  (including  any  required
signature  guarantees) or be accompanied by documents of transfer  sufficient to
permit the Trustee  with  respect to the Old Notes to register  the  transfer of
such Old Notes into the name of the  Depositor  withdrawing  the tender and (iv)
specify the name in which any such Old Notes are to be registered,  if different
from  that  of the  Depositor.  All  questions  as to  the  validity,  form  and
eligibility  (including  time of receipt)  of such  withdrawal  notices  will be
determined by the Company, whose determination shall be final and binding on all
parties.  Any Old Notes so  withdrawn  will be deemed  not to have been  validly
tendered  for purposes of the  Exchange  Offer,  and no New Notes will be issued
with respect  thereto unless the Old Notes so withdrawn are validly  retendered.
Any Old Notes that have been  tendered  but which are not  accepted for exchange
will be returned to the holder  thereof  without  cost to such holder as soon as
practicable after withdrawal, rejection of tender or termination of the Exchange
Offer.  Properly  withdrawn  Old Notes may be retendered by following one of the
procedures described above under "Procedures for Tendering" at any time prior to
the Expiration Date.


                                       13





Termination

         Notwithstanding  any other term of the Exchange Offer, the Company will
not be required to accept for exchange,  or exchange New Notes for any Old Notes
not theretofore  accepted for exchange,  and may terminate or amend the Exchange
Offer as provided  herein  before the  acceptance  of such Old Notes if: (i) any
action or  proceeding  is  instituted or threatened in any court or by or before
any  governmental  agency with  respect to the  Exchange  Offer,  which,  in the
Company's  judgment,  might materially  impair the Company's  ability to proceed
with  the  Exchange  Offer  or (ii)  any law,  statute,  rule or  regulation  is
proposed,  adopted or enacted, or any existing law, statute,  rule or regulation
is  interpreted  by the  staff of the  Commission  in a  manner,  which,  in the
Company's  judgment,  might materially  impair the Company's  ability to proceed
with the Exchange Offer.

         If the Company  determines that it may terminate the Exchange Offer, as
set forth  above,  the Company may (i) refuse to accept any Old Notes and return
any Old Notes that have been  tendered to the holders  thereof,  (ii) extend the
Exchange  Offer and retain all Old Notes tendered prior to the expiration of the
Exchange  Offer,  subject to the rights of such holders of tendered Old Notes to
withdraw their tendered Old Notes,  or (iii) waive such  termination  event with
respect to the Exchange  Offer and accept all  properly  tendered Old Notes that
have not been  withdrawn.  If such waiver  constitutes a material  change in the
Exchange  Offer,  the Company will disclose such change by means of a supplement
to this  Prospectus  that will be distributed to each  registered  holder of Old
Notes,  and the Company will extend the  Exchange  Offer for a period of five to
ten business days,  depending upon the significance of the waiver and the manner
of disclosure to the registered  holders of the Old Notes, if the Exchange Offer
would otherwise expire during such period.

Exchange Agent

         State  Street  Bank and Trust  Company has been  appointed  as Exchange
Agent for the Exchange Offer. Questions and requests for assistance and requests
for additional copies of this Prospectus or of the Letter of Transmittal  should
be directed to the Exchange Agent addressed as follows:

     By Hand:                                By Mail or Overnight Courier:

     State Street Bank and Trust Company     State Street Bank and Trust Company
     Corporate Trust Department              Corporate Trust Department
     Two International Place                 Two International Place
     Boston, Massachusetts  02110            Boston, Massachusetts  02110
     Attention:  Sandy Wong                  Attention:  Sandy Wong

                             Facsimile Transmission:
                                 (617) 664-5290


Fees and Expenses

         The expenses of soliciting  tenders pursuant to the Exchange Offer will
be borne by the Company. The principal  solicitation for tenders pursuant to the
Exchange Offer is being made by mail.  Additional  solicitations  may be made by
officers and regular  employees of the Company and its affiliates in person,  by
telegraph or by telephone.

         The Company  will not make any  payments  to brokers,  dealers or other
persons soliciting acceptances of the Exchange Offer. The Company, however, will
pay the Exchange  Agent  reasonable and customary fees for its services and will
reimburse  the  Exchange  Agent for its  reasonable  out-of-pocket  expenses  in
connection  therewith.  The  Company  may also pay  brokerage  houses  and other
custodians,  nominees and  fiduciaries  the  reasonable  out-of-pocket  expenses
incurred by them in forwarding copies of this Prospectus, Letters of Transmittal
and related  documents to the beneficial owners of the Old Notes and in handling
or forwarding tenders for exchange.

         The  expenses to be incurred in  connection  with the  Exchange  Offer,
including fees and expenses of the Exchange Agent and Trustee and accounting and
legal fees, will be paid by the Company.

                                       14





         The Company  will pay all transfer  taxes,  if any,  applicable  to the
exchange of Old Notes pursuant to the Exchange Offer. If, however,  certificates
representing New Notes or Old Notes not tendered or accepted for exchange are to
be delivered  to, or are to be  registered  or issued in the name of, any person
other than the registered  holder of the Old Notes tendered,  or if tendered Old
Notes are registered in the name of any person other than the person signing the
Letter of Transmittal, or if a transfer tax is imposed for any reason other than
the exchange of Old Notes pursuant to the Exchange Offer, then the amount of any
such  transfer  taxes  (whether  imposed on the  registered  holder or any other
persons) will be payable by the tendering  holder.  If satisfactory  evidence of
payment of such taxes or exemption therefrom is not submitted with the Letter of
Transmittal,  the amount of such transfer taxes will be billed  directly to such
tendering holder.

Accounting Treatment

         The New Notes will be  recorded at the same  carrying  value as the Old
Notes, which is face value, as reflected in the Company's  accounting records on
the date of the exchange.  Accordingly,  no gain or loss for accounting purposes
will be recognized by the Company upon the  consummation  of the Exchange Offer.
The  expenses of the  Exchange  Offer will be  amortized by the Company over the
term of the New Notes under generally accepted accounting principles.


                          DESCRIPTION OF THE NEW NOTES

         The New Notes are to be issued  under an Indenture  and a  Supplemental
Indenture,  each dated as of December 18, 1997 (collectively,  the "Indenture"),
between the Company and State Street Bank and Trust Company (the "Trustee"). The
terms of the New Notes  include  those stated in the  Indenture and those made a
part of the  Indenture  by  reference  to the Trust  Indenture  Act of 1939 (the
"Trust Indenture Act"). The New Notes are subject to all such terms, and holders
of the Old Notes and the New Notes are referred to the  Indenture  and the Trust
Indenture  Act for a statement  thereof.  The  Indenture has been filed with the
Commission  and  is  incorporated  by  reference  herein  and is  available  for
inspection  at the  corporate  trust office of the Trustee at Two  International
Place,  Boston,  Massachusetts  02110. The statements made hereunder relating to
the Indenture and the New Notes to be issued thereunder are summaries of certain
provisions  thereof,  do not purport to be complete  and are subject to, and are
qualified in their entirety by reference to, all provisions of the Indenture and
such New Notes. All section  references  appearing herein are to sections of the
Indenture,  and  capitalized  terms used but not defined  herein  shall have the
respective meanings set forth in the Indenture.

General

         The New Notes  will be  limited  to an  aggregate  principal  amount of
$150,000,000 and will mature,  unless previously redeemed, on December 18, 2002.
The New  Notes  will be issued  in  registered  form,  without  coupons,  and in
denominations  of $100,000 and integral  multiples of $1,000 in excess  thereof.
The New Notes will be senior unsecured  obligations of the Company and will rank
equally  with  each  other  and  with all  other  unsecured  and  unsubordinated
indebtedness of the Company from time to time outstanding. The New Notes will be
effectively  subordinated  to mortgages  and other secured  indebtedness  of the
Company  and to  indebtedness  and other  liabilities  of any  Subsidiaries  (as
defined below).  Accordingly,  such prior indebtedness will have to be satisfied
in full  before  holders of the New Notes will be able to realize any value from
the secured or indirectly held properties.

         As of March 1, 1998, the total outstanding  indebtedness of the Company
and its Subsidiaries  (including net borrowings made for acquisitions during the
period of October 1, 1997 through March 1, 1998 under the Bank Credit  Facility)
was approximately $758 million,  of which  approximately 97% was unsecured,  and
the indebtedness of the Company's Subsidiaries was $26 million. In addition, the
Company's Subsidiaries (with certain exceptions) are guarantors of the Company's
Bank  Credit  Facility.  The Bank  Credit  Facility is  currently  an  unsecured
revolving  credit  facility in the amount of $450  million.  The Company and its
Subsidiaries may incur additional indebtedness,  including secured indebtedness,
subject    to    the    provisions     described    below    under    "--Certain
Covenants--Limitations on Incurrence of Debt."

                                       15

         Except  as  described  under  "--Merger,  Consolidation  or  Sale"  and
"--Certain Covenants" below, the Indenture does not contain any other provisions
that would limit the ability of the Company to incur  indebtedness or that would
afford  holders  of the  New  Notes  protection  in the  event  of (i) a  highly
leveraged or similar  transaction  involving the Company or any affiliate of the
Company,  (ii) a change of control,  or (iii) a  reorganization,  restructuring,
merger or similar  transaction  involving the Company that may adversely  affect
the holders of the New Notes. In addition,  subject to the limitations set forth
under  "--Merger,  Consolidation or Sale" and "--Certain  Covenants"  below, the
Company may, in the future,  enter into certain transactions such as the sale of
all or  substantially  all of its assets or the merger or  consolidation  of the
Company  that  would  increase  the  amount  of the  Company's  indebtedness  or
substantially  reduce  or  eliminate  the  Company's  assets,  which may have an
adverse effect on the Company's ability to service its  indebtedness,  including
the New Notes.  The  Company and its  management  have no present  intention  of
engaging in a highly leveraged or similar transaction involving the Company.

Interest

         Interest  on the New Notes will accrue at the rate of 6 3/4% per annum.
Interest  on the New Notes will be payable  semi-annually  in arrears on June 18
and December 18 commencing on June 18, 1998 (each, an "Interest  Payment Date"),
and on the date of maturity or earlier  redemption of the New Notes, as the case
may be (the "Maturity Date"). The interest so payable will be paid to the person
(the  "Holder") in whose name the applicable New Note is registered at the close
of  business  on the date  (whether  or not a  Business  Day) 15  calendar  days
preceding the  applicable  Interest  Payment Date or the Maturity Date (each,  a
"Regular  Record  Date").  Interest  on the New Notes will  accrue from the most
recent  date to which the  interest  has been paid or, if no  interest  has been
paid, from the date of original issuance. Interest will be computed on the basis
of a 360-day  year  comprised  of twelve  30-day  months.  The New Notes will be
payable both as to principal and interest at the  corporate  trust office of the
Trustee, initially at Two International Place, Boston,  Massachusetts 02110, or,
at the option of the Company, payment of interest may be made by check mailed to
the Holders of New Notes at their addresses set forth in the register of Holders
of New Notes.

Optional Redemption of New Notes

         Until the third  month prior to their  stated  Maturity  Date,  the New
Notes will be subject to redemption at any time at the option of the Company, in
whole or in part,  upon not less than 30 nor more than 60 days' notice,  at 100%
of the outstanding principal amount thereof, plus accrued and unpaid interest to
but excluding the applicable redemption date, plus the Make-Whole Amount. On and
after the third month prior to the stated  Maturity Date for the New Notes,  the
New  Notes  will be  subject  to  redemption  at any time at the  option  of the
Company,  in  whole or in part,  upon  not less  than 30 nor more  than 60 days'
notice,  at 100% of the outstanding  principal amount thereof,  plus accrued and
unpaid interest to but excluding the applicable redemption date.

         The Company is not required to make sinking fund or redemption payments
with respect to the New Notes.

         "Make-Whole  Amount" means, in connection with any optional  redemption
or  accelerated  payment  of any New  Notes,  the  excess,  if  any,  of (i) the
aggregate present value as of the date of such redemption or accelerated payment
of each dollar of  principal  being  redeemed or paid and the amount of interest
(exclusive of interest accrued to the date of redemption or accelerated payment)
that would have been  payable in respect of such  dollar if such  redemption  or
accelerated  payment  had  not  been  made,  determined  by  discounting,  on  a
semiannual   basis,  such  principal  and  interest  at  the  Reinvestment  Rate
(determined  on the  third  Business  Day  preceding  the date  such  notice  of
redemption is given or declaration of  acceleration is made) from the respective
dates on which such  principal  and  interest  would  have been  payable if such
redemption  or  accelerated  payment had not been made,  over (ii) the aggregate
principal amount of the New Notes being redeemed or paid.

         "Reinvestment  Rate" means 0.25%  (twenty-five  one  hundredths  of one
percent) plus the yield on treasury  securities at constant  maturity  under the
heading "Week  Ending"  published in the  Statistical  Release under the caption
"Treasury  Constant  Maturities" for the maturity (rounded to the nearest month)
corresponding  to the remaining life to maturity,  as of the payment date of the
principal  being  redeemed or paid. If no maturity  exactly  corresponds to such
maturity,  yields for the two published maturities most closely corresponding to
such maturity
                                       16


shall be  calculated  pursuant to the  immediately  preceding  sentence  and the
Reinvestment  Rate shall be interpolated  or extrapolated  from such yields on a
straight-line  basis,  rounding in each of such relevant  periods to the nearest
month.  For  purposes of  calculating  the  Reinvestment  Rate,  the most recent
Statistical  Release  published  prior  to  the  date  of  determination  of the
Make-Whole Amount shall be used.

         "Statistical  Release"  means the  statistical  release  designated "H.
15(519)" or any successor  publication  which is published weekly by the Federal
Reserve  System and which  establishes  yields on actively  traded United States
government  securities  adjusted to constant  maturities or, if such statistical
release is not published at the time of any  determination  under the Indenture,
then any  publicly  available  source of  similar  market  data  which  shall be
designated by the Company.

Certain Covenants

         Existence. Except as permitted under "--Merger,  Consolidation or Sale"
below,  the  Company  will be  required  to do or cause  to be done  all  things
necessary to preserve and keep in full force and effect its corporate existence,
rights  (charter and  statutory) and  franchises;  provided,  however,  that the
Company  shall  not be  required  to  preserve  any  right  or  franchise  if it
determines that the  preservation  thereof is no longer desirable in the conduct
of its business.

         Provision  of  Financial  Information.  Whether  or not the  Company is
subject to Section 13 or 15(d) of the  Exchange  Act, the Company  will,  to the
extent  permitted  under the Exchange Act, file with the  Commission  the annual
reports, quarterly reports and other documents which the Company would have been
required to file with the  Commission  pursuant to such Section 13 or 15(d) (the
"Financial  Statements")  if the Company were so subject,  such  documents to be
filed with the  Commission on or prior to the  respective  dates (the  "Required
Filing  Dates") by which the Company  would have been so required to file if the
Company  were so subject.  The Company will also in any event (i) within 15 days
of each  Required  Filing  Date (a)  transmit  by mail to all Holders of the New
Notes, as their names and addresses appear in the Company's  register of holders
of New Notes,  without  cost to the  Holders,  copies of the annual  reports and
quarterly  reports  which the Company  would have been required to file with the
Commission  pursuant to Section 13 or 15(d) of the  Exchange  Act if the Company
were  subject  to such  Sections,  and (b) file with the  Trustee  copies of the
annual  reports,  quarterly  reports and other documents which the Company would
have been required to file with the  Commission  pursuant to Section 13 or 15(d)
of the Exchange Act if the Company  were subject to such  Sections,  and (ii) if
filing such documents by the Company with the Commission is not permitted  under
the Exchange Act,  promptly upon written  request and payment of the  reasonable
cost of  duplication  and  delivery,  supply  copies  of such  documents  to any
prospective holder of the New Notes.

         Limitations  on Incurrence of Debt.  The Company will not, and will not
permit any  Subsidiary  to,  incur any Debt (as defined  below) if,  immediately
after  giving  effect  to  the  incurrence  of  such  additional  Debt  and  the
application  of the proceeds  thereof,  the  aggregate  principal  amount of all
outstanding  Debt of the Company and its  Subsidiaries  on a consolidated  basis
determined  in  accordance  with GAAP is greater than 60% of the sum  ("Adjusted
Total Assets") of (without  duplication) (i) the Total Assets (as defined below)
of the  Company  and  its  Subsidiaries  as of the end of the  calendar  quarter
covered in the Company's  Annual Report on Form 10-K, or the Quarterly Report on
Form 10-Q, as the case may be, most recently filed with the  Commission  (or, if
such filing is not permitted  under the Exchange Act, with the Trustee) prior to
the incurrence of such  additional  Debt and (ii) the purchase price of any real
estate assets or mortgages receivable acquired, and the amount of any securities
offering  proceeds  received (to the extent that such  proceeds were not used to
acquire real estate assets or mortgages  receivable or used to reduce Debt),  by
the Company or any Subsidiary since the end of such calendar quarter,  including
those proceeds  obtained in connection  with the  incurrence of such  additional
Debt.

         In addition to the foregoing limitations on the incurrence of Debt, the
Company will not, and will not permit any  Subsidiary to, incur any Secured Debt
(as defined below) if, immediately after giving effect to the incurrence of such
additional  Secured  Debt  and the  application  of the  proceeds  thereof,  the
aggregate  principal  amount of all outstanding  Secured Debt of the Company and
its  Subsidiaries on a consolidated  basis is greater than 40% of Adjusted Total
Assets.
                                       17

         In addition to the foregoing limitations on the Incurrence of Debt, the
Company will not, and will not permit any  Subsidiary  to, incur any Debt if the
ratio of  Consolidated  Income  Available for Debt Service (as defined below) to
the Annual  Debt  Service  (as defined  below) for the four  consecutive  fiscal
quarters most recently ended prior to the date on which such  additional Debt is
to be incurred shall have been less than 1.5x, on a pro forma basis after giving
effect thereto and to the application of the proceeds therefrom,  and calculated
on the assumption  that (i) such Debt and any other Debt incurred by the Company
and its  Subsidiaries  since the first day of such  four-quarter  period and the
application of the proceeds  therefrom,  including to refinance  other Debt, had
occurred at the  beginning of such period;  (ii) the  repayment or retirement of
any other Debt by the Company and its Subsidiaries  since the first date of such
four-quarter  period had been repaid or retired at the  beginning of such period
(except  that, in making such  computation,  the amount of Debt repaid under any
revolving credit facility shall be computed based upon the average daily balance
of such Debt during such period); (iii) in the case of Acquired Debt (as defined
below) or Debt incurred in connection with any  acquisition  since the first day
of such  four-quarter  period,  the related  acquisition  had occurred as of the
first day of such  period  with  appropriate  adjustments  with  respect to such
acquisition being included in such pro forma  calculation;  and (iv) in the case
of any  acquisition  or disposition  by the Company or its  Subsidiaries  of any
asset or group of  assets  since  the  first  day of such  four-quarter  period,
whether by merger,  stock  purchase or sale,  or asset  purchase  or sale,  such
acquisition or  disposition or any related  repayment of Debt had occurred as of
the first day of such period with the  appropriate  adjustments  with respect to
such acquisition or disposition being included in such as adjusted calculation.

         Maintenance  of  Total   Unencumbered   Assets.  The  Company  and  its
Subsidiaries will maintain Total  Unencumbered  Assets (as defined below) of not
less than 200% of the aggregate  outstanding  principal  amount of the Unsecured
Debt (as defined  below) of the Company and its  Subsidiaries  on a consolidated
basis.

         As used herein:

         "Acquired  Debt"  means Debt of a Person (i)  existing at the time such
Person becomes a Subsidiary or (ii) assumed in connection  with the  acquisition
of assets from such Person, in each case, other than Debt incurred in connection
with,  or in  contemplation  of,  such  Person  becoming  a  Subsidiary  or such
acquisition.  Acquired  Debt shall be deemed to be  incurred  on the date of the
related  acquisition  of assets from any Person or the date the acquired  Person
becomes a Subsidiary.

         "Annual Debt Service" as of any date means the maximum  amount which is
expensed  in any  12-month  period for  interest  on Debt of the Company and its
Subsidiaries.

         "Capital  Stock" means,  with respect to any Person,  any capital stock
(including preferred stock), shares, interests, participation or other ownership
interests  (however  designated)  of such Person and any rights (other than debt
securities  convertible  into or exchangeable  for capital  stock),  warrants or
options to purchase any thereof.

         "Consolidated  Income  Available for Debt Service" for any period means
Earnings from Operations (as defined below) of the Company and its  Subsidiaries
plus amounts which have been deducted,  and minus amounts which have been added,
for the following (without duplication): (i) interest on Debt of the Company and
its  Subsidiaries,  (ii) provision for taxes of the Company and its Subsidiaries
based on income,  (iii)  amortization  of debt  discount and deferred  financing
costs,  (iv)  provisions  for  gains  and  losses  on  properties  and  property
depreciation  and  amortization,  (v) the effect of any noncash charge resulting
from a change in accounting  principles in determining  Earnings from Operations
for such period and (vi) amortization of deferred charges.

         "Debt" of the Company or any Subsidiary means, without duplication, any
indebtedness  of the Company or any Subsidiary,  whether or not  contingent,  in
respect of (i)  borrowed  money or  evidenced  by bonds,  notes,  debentures  or
similar  instruments,  (ii)  indebtedness  for  borrowed  money  secured  by any
encumbrance  existing on property owned by the Company or any Subsidiary,  (iii)
the reimbursement  obligations,  contingent or otherwise, in connection with any
letters of credit  actually  issued  (other  than  letters  of credit  issued to
provide credit  enhancement or support with respect to other indebtedness of the
Company or any  Subsidiary  otherwise  reflected as Debt  hereunder)  or amounts
representing  the  balance  deferred  and  unpaid of the  purchase  price of any
property  or  services,  except any such  balance  that  constitutes  an accrued
expense or trade payable,  or all  conditional  sale  obligations or obligations
under  any  title  retention  agreement,   (iv)  the  principal  amount  of  all
obligations of the

                                       18


Company  or any  Subsidiary  with  respect  to  redemption,  repayment  or other
repurchase  of any  Disqualified  Stock,  or (v) any  lease of  property  by the
Company  or any  Subsidiary  as  lessee  which  is  reflected  on the  Company's
consolidated  balance sheet as a capitalized  lease in accordance  with GAAP, to
the extent, in the case of items of indebtedness  under (i) through (iii) above,
that any such items (other than  letters of credit)  would appear as a liability
on the Company's  consolidated  balance sheet in accordance  with GAAP, and also
includes, to the extent not otherwise included, any obligation by the Company or
any  Subsidiary to be liable for, or to pay, as obligor,  guarantor or otherwise
(other than for purposes of collection in the ordinary course of business), Debt
of  another  Person  (other  than  the  Company  or any  Subsidiary)  (it  being
understood  that Debt  shall be  deemed to be  incurred  by the  Company  or any
Subsidiary  whenever  the  Company  or such  Subsidiary  shall  create,  assume,
guarantee or otherwise become liable in respect thereof).

         "Disqualified  Stock"  means,  with respect to any Person,  any Capital
Stock of such Person which by the terms of such  Capital  Stock (or by the terms
of any security into which it is convertible or for which it is  exchangeable or
exercisable),  upon the  happening of any event or  otherwise  (i) matures or is
mandatorily  redeemable,  pursuant to a sinking  fund  obligation  or  otherwise
(other than  Capital  Stock which is  redeemable  solely in exchange  for common
stock or shares),  (ii) is convertible  into or  exchangeable or exercisable for
Debt or  Disqualified  Stock, or (iii) is redeemable at the option of the holder
thereof,  in whole or in part (other  than  Capital  Stock  which is  redeemable
solely in exchange for common stock or shares),  in each case on or prior to the
stated maturity of the New Notes.

         "Earnings from Operations" for any period means net earnings  excluding
gains  and  losses on sales of  investments,  extraordinary  items and  property
valuation  losses,  as reflected in the financial  statements of the Company and
its  Subsidiaries  for  such  period,  determined  on a  consolidated  basis  in
accordance with GAAP.

         "Secured Debt" means Debt secured by any mortgage, lien, charge, pledge
or security interest of any kind.

         "Subsidiary"  means any corporation or other entity of which a majority
of (i) the voting power of the voting equity  securities or (ii) the outstanding
equity interests of which are owned,  directly or indirectly,  by the Company or
one or  more  other  Subsidiaries  of the  Company.  For  the  purposes  of this
definition,  "voting equity  securities"  means equity  securities having voting
power for the election of directors,  whether at all times or only so long as no
senior class of security has such voting power by reason of any contingency.

         "Total  Assets" as of any date  means the sum of (i) the  Undepreciated
Real Estate Assets and (ii) all other assets of the Company and its Subsidiaries
determined  in  accordance  with GAAP (but  excluding  accounts  receivable  and
intangibles).

         "Total  Unencumbered  Assets" means the sum of (i) those  Undepreciated
Real Estate Assets not subject to an encumbrance for borrowed money and (ii) all
other assets of the Company and its  Subsidiaries  not subject to an encumbrance
for borrowed money  determined in accordance  with GAAP (but excluding  accounts
receivable and intangibles).

         "Undepreciated  Real  Estate  Assets"  as of any  date  means  the cost
(original cost plus capital  improvements)  of real estate assets of the Company
and  its  Subsidiaries  on  such  date,  before  depreciation  and  amortization
determined on a consolidated basis in accordance with GAAP.

         "Unsecured  Debt"  means  Debt  which  is  not  secured  by  any of the
properties of the Company or any Subsidiary.

Merger, Consolidation or Sale

         The  Company  may  consolidate  with,  or sell,  lease or convey all or
substantially  all of its assets to, or merge  with or into,  any other  entity,
provided  that (i) either the Company  shall be the  continuing  entity,  or the
successor  entity (if other than the Company)  formed by or  resulting  from any
such  consolidation  or merger or which shall have received the transfer of such
assets is a Person organized and existing under the laws of the United States or
any state thereof and shall expressly assume the due and punctual payment of the
principal of (and premium or Make-


                                       19


Whole  Amount,  if any) and any interest on all of the New Notes and the due and
punctual  performance  and  observance of all of the  covenants  and  conditions
contained in the  Indenture to be  performed  by the Company;  (ii)  immediately
after giving  effect to such  transaction  and treating any  indebtedness  which
becomes an  obligation of the Company or any  Subsidiary as a result  thereof as
having  been  incurred  by the  Company or such  Subsidiary  at the time of such
transaction,  no Event of Default under the Indenture,  and no event which after
notice or the lapse of time,  or both,  would  become  such an Event of Default,
shall have occurred and be continuing;  and (iii) an Officers'  Certificate  and
legal opinion covering such conditions shall be delivered to the Trustee.

Events of Default, Notice and Waiver

         The  Indenture  provides  that the  following  events  are  "Events  of
Default"  with respect to the New Notes:  (i) default for 30 days in the payment
of any  installment  of interest  payable on any New Note when due and  payable;
(ii)  default  in the  payment of the  principal  of (or  premium or  Make-Whole
Amount,  if any,  on) any New Note when due and  payable;  (iii)  default in the
performance,  or  breach,  of any  covenant  of  the  Company  contained  in the
Indenture  (other than a covenant added to the Indenture  solely for the benefit
of a series of Debt  Securities  (as defined)  other than the New Notes),  which
continues for 60 days after written  notice as provided in the  Indenture;  (iv)
default under any bond, debenture, note, mortgage, indenture or instrument under
which  there may be issued or by which  there may be  secured or  evidenced  any
indebtedness  for money  borrowed  by the  Company  (or by any  Subsidiary,  the
repayment  of which the  Company  has  guaranteed  or for which the  Company  is
directly  responsible  or liable as obligor or  guarantor)  having an  aggregate
principal amount outstanding of at least $20,000,000,  whether such indebtedness
now exists or shall  hereafter be incurred or created,  which default shall have
resulted in such  indebtedness  becoming or being declared due and payable prior
to the date on which it would  otherwise  have become due and  payable,  without
such  indebtedness  having  been  discharged  or such  acceleration  having been
rescinded  or annulled  within a period of 10 days after  written  notice to the
Company by the  Trustee or to the  Company  and the Trustee by the Holders of at
least 25% in principal  amount of the  outstanding New Notes, as provided in the
Indenture; or (v) certain events of bankruptcy, insolvency or reorganization, or
court  appointment  of a receiver,  liquidator  or trustee of the Company or any
Significant  Subsidiary  or  for  all or  substantially  all  of  either  of its
property.  "Significant Subsidiary" means any Subsidiary which is a "significant
subsidiary"  (within  the  meaning  of  Regulation  S-X,  promulgated  under the
Securities Act) of the Company.

         See "Description of  Indenture--Events  of Default,  Notice and Waiver"
below for a description of rights, remedies and other matters relating to Events
of Default.

Discharge, Defeasance and Covenant Defeasance

         The  provisions  of the Indenture  relating to defeasance  and covenant
defeasance described under "Description of Indenture--Discharge,  Defeasance and
Covenant Defeasance" below will apply to the New Notes.

Book-Entry System

         Old Notes were represented  initially by a permanent global certificate
in fully  registered form without  interest coupons (the "Global Note") and were
registered  in the  name of a  nominee  of DTC  and  deposited  with  DTC or its
custodian.  The Global Note was  subject to certain  restrictions  on  transfer.
Beneficial interests in the Global Note may be transferred to a person who takes
delivery  in the form of an  interest in a single  global  certificate  in fully
registered form without interest coupons,  whether before, on or after such 40th
day,  only upon  receipt  by the  Trustee  of a written  certification  from the
transferor  to the effect that such  transfer is being made in  accordance  with
Rule  903 or 904 of  Regulation  S or Rule  144  under  the  Securities  Act (an
"Unrestricted Global Note Certification"). Any beneficial interest in one of the
global notes that is  transferred  to a person who takes delivery in the form of
an  interest  in the other  global  note  will,  upon  transfer,  cease to be an
interest in such  global  note and will  become an interest in the other  global
note and,  accordingly,  will thereafter be subject to all transfer restrictions
and other procedures and restrictions applicable to beneficial interests in such
other global note for as long as it remains such an interest.

         The Global Note, to the extent directed by the holders thereof in their
Letters of Transmittal, will be exchanged through book-entry electronic transfer
for a Global Note (the "New Global  Note") in definitive  fully-


                                       20


registered form without interest coupons  registered in the name of a nominee of
DTC and held by the Trustee as  custodian.  Except in the limited  circumstances
described below, owners of beneficial  interests in the New Global Note will not
be entitled to receive physical delivery of Notes.

         Upon the issuance of the New Global  Note,  DTC or its  custodian  will
credit,  in  its  internal  system,  the  respective  principal  amount  of  the
individual  beneficial  interests  represented  by the  New  Global  Note to the
accounts of persons who have accounts with DTC. Ownership of beneficial interest
in the New Global  Note will be limited to persons  who have  accounts  with DTC
("DTC  Participants")  or persons who hold interests  through DTC  Participants.
Ownership of  beneficial  interests in the New Global Note will be shown on, and
the transfer of that ownership will be effected only through, records maintained
by DTC or its nominee  (with respect to interests of DTC  Participants)  and the
records of DTC Participants (with respect to interests of persons other than DTC
Participants).

         Investors  may hold  their  interests  in the New Global  Note  through
Morgan Guaranty Trust Company of New York,  Brussels Office,  as operator of the
Euroclear System  ("Euroclear") or Citibank,  N.A., as depositary for Cedel S.A.
("Cedel"),  if they are  participants  in such systems,  or  indirectly  through
organizations  that are  participants  in such systems.  Investors may also hold
such  interests  through  organizations  other than Euroclear and Cedel that are
participants  in the DTC system.  Euroclear and Cedel will hold interests in the
New Global Note on behalf of their account holders through customers' securities
accounts  in  their   respective   names  on  the  books  of  their   respective
depositaries,  which in turn will hold such  interests in the New Global Note in
customers'  securities  accounts in the depositaries' names on the books of DTC.
Investors may also hold their interests in the New Global Note directly  through
DTC, if they are DTC Participants, or indirectly through organizations which are
DTC Participants.

         Payments of the  principal  of and interest on the New Global Note will
be made to DTC or its nominee as the registered owner thereof.  The Company will
not have any  responsibility or liability for any aspect of the records relating
to or payments  made on account of  beneficial  ownership  interests  in the New
Global Note or for maintaining, supervising or reviewing any records relating to
such beneficial ownership interests.

         The  Company  expects  that DTC or its  nominee,  upon  receipt  of any
payment of principal or interest in respect of the New Global Note  representing
any New Notes held by it or its nominee, will credit DTC Participants'  accounts
with payments in amounts  proportionate to their respective beneficial interests
in the principal amount of the New Global Note as shown on the records of DTC or
its  nominee.  The Company also expects  that  payments by DTC  Participants  to
owners of  beneficial  interests  in the New Global Note held  through  such DTC
Participants will be governed by standing  instructions and customary practices,
as is now the case with securities held for the accounts of customers registered
in the  names  of  nominees  for  such  customers.  Such  payments  will  be the
responsibility of such DTC Participants.

         If DTC is at any time  unwilling or unable to continue as depositary or
is ineligible to act as depositary  and a successor  depositary is not appointed
by the  Company  within 90 days after the  Company is notified by DTC or becomes
aware of such condition,  the Company will issue New Notes in definitive form in
exchange for the New Global Note representing the New Notes.

         Individual  definitive  New Notes will not be eligible for clearing and
settlement through Euroclear, Cedel or DTC.

Same-Day Settlement and Payment

         All payments of principal and interest in respect of the New Notes will
be made by the Company in immediately available funds.


                                       21



                            DESCRIPTION OF INDENTURE

         The  New  Notes  will  be  issued  pursuant  to the  Indenture  and the
supplement relating thereto,  which was entered into between the Company and the
Trustee.  The  Indenture  provides for the  issuance of multiple  series of debt
securities,  including the New Notes (each "Debt Securities") in accordance with
the terms thereof and the applicable supplemental indenture. The statements made
hereunder  relating  to the  Indenture  and the  Debt  Securities  to be  issued
thereunder  are  summaries and do not purport to be complete and are subject to,
and are  qualified in their  entirety by  reference  to, all  provisions  of the
Indenture and such Debt  Securities.  Terms of the  supplemental  indenture with
respect  to  the  New  Notes,   certain  of  which  are  described  above  under
"Description  of  the  New  Notes,"  supersede  conflicting  provisions  of  the
Indenture  described  below,  insofar  as  applicable  to  the  New  Notes.  The
description  of certain  provisions  of the Indenture  described  below does not
purport to be complete,  and reference is made to the  definitive  Indenture and
the  supplemental  indenture  relating  to the New  Notes,  copies  of which are
available upon request from the Company.

General

         The  Debt  Securities  may be  issued  without  limit  as to  aggregate
principal  amount,  in one or more series, in each case as established from time
to time in or  pursuant to  authority  granted by a  resolution  of the Board of
Trustees of the Company or as established in one or more indentures supplemental
to the  Indenture.  All Debt  Securities of one series need not be issued at the
same time and, unless otherwise provided, a series may be reopened,  without the
consent of the holders of the Debt  Securities of such series,  for issuances of
additional Debt Securities of such series.

         It is anticipated that any Indenture will provide that the Company may,
but need not, designate more than one Trustee  thereunder,  each with respect to
one or more series of Debt  Securities.  Any  Trustee  under the  Indenture  may
resign or be removed with respect to one or more series of Debt Securities,  and
a successor  Trustee may be appointed to act with respect to such series. In the
event that two or more  persons are acting as Trustee  with respect to different
series of Debt Securities, each such Trustee shall be a trustee of a trust under
the  Indenture  separate  and  apart  from the trust  administered  by any other
Trustee,  and, except as otherwise indicated herein, any action described herein
to be taken by the Trustee may be taken by each such  Trustee  with  respect to,
and only with respect to, the one or more series of Debt Securities for which it
is Trustee under the Indenture.

         Except  as  described  under  "Description  of the  New  Notes--Certain
Covenants" and  "Description of New  Notes--Merger,  Consolidation or Sale," and
"The Exchange  Offer," the Indenture does not contain any other  provisions that
limit the ability of the Company to incur indebtedness or that afford holders of
the Debt  Securities  protection  in the event of a highly  leveraged or similar
transaction  involving  the Company.  However,  restrictions  on  ownership  and
transfers of the Company's  capital stock,  designed to preserve its status as a
REIT, may act to prevent or hinder a change of control.

Denominations, Interest, Registration and Transfer

         Any interest not  punctually  paid or duly provided for on any interest
payment  date  with  respect  to a Debt  Security  ("Defaulted  Interest")  will
forthwith  cease to be payable to the holder on the  applicable  regular  record
date and may either be paid to the person in whose  name such Debt  Security  is
registered  at the close of  business  on a special  record  date (the  "Special
Record  Date") for the  payment of such  Defaulted  Interest  to be fixed by the
Trustee,  notice  whereof shall be given to the holder of such Debt Security not
less than 10 days prior to such Special  Record Date, or may be paid at any time
in any other lawful manner, all as more completely described in the Indenture.

         Subject to certain  limitations  imposed upon Debt Securities issued in
book-entry  form,  the Debt  Securities of any series will be  exchangeable  for
other  Debt  Securities  of the same  series and of a like  aggregate  principal
amount and tenor of different  authorized  denominations  upon surrender of such
Debt  Securities  at the  corporate  trust office of the  Trustee.  In addition,
subject to certain limitations imposed upon Debt Securities issued in book-entry
form,  the Debt  Securities of any series may be  surrendered  for conversion or
registration  of transfer  thereof at the corporate trust office of the Trustee.
Every Debt Security surrendered for conversion, registration of transfer or

                                       22

exchange  shall be duly  endorsed  or  accompanied  by a written  instrument  of
transfer.  No service  charge will be made for any  registration  of transfer or
exchange  of any Debt  Securities,  but the  Trustee or the  Company may require
payment  of a sum  sufficient  to  cover  any tax or other  governmental  charge
payable  in  connection  therewith.  The  Company  may at any time  rescind  the
designation of any transfer agent  designated by the Company with respect to any
series of Debt Securities or approve a change in the location  through which any
such transfer agent acts, except that the Company will be required to maintain a
transfer agent in each place of payment for such series.  The Company may at any
time  designate  transfer  agents in addition to the Trustee with respect to any
series of Debt Securities.

         Neither the  Company  nor the  Trustee  shall be required to (i) issue,
register  the transfer of or exchange  Debt  Securities  of any series  during a
period beginning at the opening of business 15 days before any selection of Debt
Securities  of that series to be redeemed and ending at the close of business on
(a) if such Debt Securities are issuable only as registered securities,  the day
of the  mailing  of the  relevant  notice  of  redemption  and (b) if such  Debt
Securities are issuable as bearer  securities,  the day of the first publication
of the  relevant  notice of  redemption  or, if such  Debt  Securities  are also
issuable as registered  securities and there is no  publication,  the mailing of
the  relevant  notice of  redemption,  or (ii) to  register  the  transfer of or
exchange any registered security so selected for redemption in whole or in part,
except,  in the case of any  registered  security to be  redeemed  in part,  the
portion thereof not to be redeemed,  or (iii) to exchange any bearer security so
selected for redemption  except that such a bearer security may be exchanged for
a  registered  security  of that  series  and like  tenor;  provided  that  such
registered security shall be simultaneously  surrendered for redemption, or (iv)
to issue,  register the transfer of or exchange any Debt Security which has been
surrendered  for repayment at the option of the holder,  except the portion,  if
any, of such Debt Security not to be so repaid.

Events of Default, Notice and Waiver

         The  Indenture  will provide that the  following  events are "Events of
Default" with respect to any series of Debt Securities  issued  thereunder:  (a)
default for 30 days in the payment of any  installment  on any Debt  Security of
such series; (b) default in the payment of the principal of (or premium, if any,
on) any Debt Security of such series at its maturity;  (c) default in making any
sinking  fund  payments as required for any Debt  Security of such  series;  (d)
default in the performance of any other covenant of the Company contained in the
Indenture  (other than a covenant added to the Indenture  solely for the benefit
of a series of Debt Securities issued  thereunder other than such series),  such
default  having  continued for 60 days after  written  notice as provided in the
Indenture; (e) default in the payment of an aggregate principal amount exceeding
$20,000,000  of any  evidence of  indebtedness  of the Company or any  mortgage,
indenture  or other  instrument  under which such  indebtedness  is issued or by
which such  indebtedness  is secured,  such default  having  occurred  after the
expiration  of  any  applicable   grace  period  and  having   resulted  in  the
acceleration of the maturity of such indebtedness, but only if such indebtedness
is not discharged or such acceleration is not rescinded or annulled; (f) certain
events of bankruptcy,  insolvency or  reorganization,  or court appointment of a
receiver, liquidator or trustee of the Company or any Significant Subsidiary (as
hereinafter  defined)  or any of their  respective  property;  and (g) any other
event  of  default  provided  with  respect  to  a  particular  series  of  Debt
Securities.  The term "Significant Subsidiary" means each significant subsidiary
(as defined in  Regulation  S-X  promulgated  under the  Securities  Act) of the
Company.

         If an Event of Default  (other  than an Event of Default  described  in
clause (f) above) under the  Indenture  with respect to Debt  Securities  of any
series at the time outstanding occurs and is continuing, then in every such case
the Trustee or the holders of not less than a majority  in  principal  amount of
the outstanding  Debt Securities of that series may declare the principal amount
(or, if the Debt  Securities of that series are Debt Securities that provide for
less than the entire  principal amount thereof to be payable upon declaration of
acceleration of the maturity thereof (an "Original Issue Discount  Security") or
indexed securities,  such portion of the principal amount as may be specified in
the terms  thereof) of all of the Debt  Securities  of that series to be due and
payable immediately by written notice thereof to the Company (and to the Trustee
if given by the holders).  If an Event of Default  described in clause (f) above
with respect to the Debt Securities of any series at the time outstanding  shall
occur,  the principal  amount of all the Debt  Securities of that series (or, in
the case of any such Original  Issue  Discount  Security or other Debt Security,
such specified amount) will automatically, and without any action by the Trustee
or any holder of such  series of Debt  Securities,  become  immediately  due and
payable.  However,  at any time after such a declaration  of  acceleration  with
respect  to Debt  Securities  of such  series  (or of all Debt  Securities  then
outstanding under the

                                       23

Indenture,  as the case may be) has been made,  but before a judgment  or decree
for payment of the money due has been  obtained by the  Trustee,  the holders of
not less than a majority in principal  amount of outstanding  Debt Securities of
such series (or of all Debt Securities then outstanding under the Indenture,  as
the case may be) may rescind and annul such  declaration and its consequences if
(i) the Company shall have deposited  with the Trustee all required  payments of
the  principal of (and premium,  if any) and interest on the Debt  Securities of
such series (or of all Debt Securities then outstanding under the Indenture,  as
the case may be), plus certain fees, expenses, disbursements and advances of the
Trustee,  and (ii)  all  Events  of  Default,  other  than  the  non-payment  of
accelerated  principal (or specified  portion thereof),  or premium,  if any, or
interest on the Debt  Securities of such series (or of all Debt  Securities then
outstanding  under the Indenture,  as the case may be) have been cured or waived
as provided in the  Indenture.  The Indenture will also provide that the holders
of not  less  than a  majority  in  principal  amount  of the  outstanding  Debt
Securities of any series (or of all Debt Securities then  outstanding  under the
Indenture,  as the case may be) may waive any past  default with respect to such
series  and  its  consequences,  except  a  default  (i) in the  payment  of the
principal  of (or  premium,  if any) or  interest  on any Debt  Security of such
series or (ii) in respect of a covenant or provision  contained in the Indenture
that  cannot be  modified  or amended  without the consent of the holder of each
outstanding Debt Security affected thereby.

         The  Trustee  will be  required  to give  notice to the holders of Debt
Securities  within 90 days of a default under the Indenture  unless such default
has been cured or waived;  provided,  however,  that the  Trustee  may  withhold
notice to the  holders  of any series of Debt  Securities  of any  default  with
respect to such series  (except a default in the payment of the principal of (or
premium,  if any) or  interest  on any Debt  Security  of such  series or in the
payment of any sinking fund  installment in respect of any Debt Security of such
series)  if  specified   responsible  officers  of  the  Trustee  consider  such
withholding to be in the interest of such holders.

         The  Indenture  will provide that no holders of Debt  Securities of any
series may institute any proceedings, judicial or otherwise, with respect to the
Indenture  or for any  remedy  thereunder,  except in the case of failure of the
Trustee,  for 60 days,  to act  after  it has  received  a  written  request  to
institute  proceedings in respect of an event of default from the holders of not
less than a majority in principal  amount of the outstanding  Debt Securities of
such series,  as well as an offer of reasonable  indemnity.  This provision will
not prevent,  however,  any holder of Debt Securities from  instituting suit for
the  enforcement  of  payment  of the  principal  of (and  premium,  if any) and
interest on such Debt Securities at the respective due dates thereof.

         Subject to provisions  in the Indenture  relating to its duties in case
of default,  the Trustee will not be under any obligation to exercise any of its
rights or powers under the  Indenture at the request or direction of any holders
of any series of Debt Securities then  outstanding  under the Indenture,  unless
such holders shall have offered to the Trustee reasonable security or indemnity.
The holders of not less than a majority in principal  amount of the  outstanding
Debt Securities of any series (or of all Debt Securities then outstanding  under
the  Indenture,  as the case may be) shall  have the  right to direct  the time,
method and place of conducting any  proceeding  for any remedy  available to the
Trustee,  or of  exercising  any  trust or  power  conferred  upon the  Trustee.
However,  the  Trustee may refuse to follow any  direction  which is in conflict
with any law or the  Indenture,  which  may  involve  the  Trustee  in  personal
liability or which may be unduly  prejudicial to the holders of Debt  Securities
of such series not joining therein.

         The  Company  will be  required  to deliver to the  Trustee  annually a
certificate, signed by one of several specified officers of the Company, stating
whether or not such  officer has  knowledge of any default  under the  Indenture
and, if so, specifying each such default and the nature and status thereof.

Modification of the Indenture

         Modifications  and  amendments of the Indenture will be permitted to be
made  only with the  consent  of the  holders  of not less  than a  majority  in
principal  amount of all  outstanding  Debt  Securities or series of outstanding
Debt Securities which are affected by such modification or amendment;  provided,
however,  that no such modification or amendment may, without the consent of the
holder of each such Debt  Security  affected  thereby,  (i)  change  the  stated
maturity of the principal  of, or any  installment  of interest (or premium,  if
any) on any such Debt Security; (ii) reduce the principal amount of, or the rate
or amount of interest on, or any premium payable on redemption of, any such Debt
Security,  or reduce the  amount of  principal  of an  Original  Issue  Discount
Security that would be due

                                       24

and payable upon declaration of acceleration of the maturity thereof or would be
provable in bankruptcy, or adversely affect any right of repayment of the holder
of any such Debt  Security;  (iii)  change the place of payment,  or the coin or
currency,  for payment of principal of, premium, if any, or interest on any such
Debt Security;  (iv) impair the right to institute  suit for the  enforcement of
any  payment  on or with  respect  to any such Debt  Security;  (v)  reduce  the
above-stated  percentage of outstanding  Debt Securities of any series necessary
to modify or amend the Indenture,  to waive  compliance with certain  provisions
thereof or certain defaults and consequences  thereunder or to reduce the quorum
or voting  requirements  set forth in the  Indenture;  or (vi) modify any of the
foregoing  provisions or any of the provisions relating to the waiver of certain
past defaults or certain covenants,  except to increase the required  percentage
to effect such action or to provide that  certain  other  provisions  may not be
modified or waived without the consent of the holder of such Debt Security.

         The Indenture will provide that the holders of not less than a majority
in principal amount of a series of outstanding Debt Securities have the right to
waive compliance by the Company with certain  covenants  relating to such series
of Debt Securities in the Indenture.

         Modifications  and  amendments of the Indenture will be permitted to be
made by the Company and the Trustee thereunder without the consent of any holder
of Debt  Securities  for any of the  following  purposes:  (i) to  evidence  the
succession of another person to the Company as obligor under the Indenture; (ii)
to add to the  covenants of the Company for the benefit of the holders of all or
any series of Debt  Securities or to surrender any right or power conferred upon
the Company in the Indenture;  (iii) to add events of default for the benefit of
the holders of all or any series of Debt  Securities;  (iv) to add or change any
provisions  of the  Indenture to  facilitate  the issuance of, or to  liberalize
certain terms of, Debt Securities in bearer form, or to permit or facilitate the
issuance of Debt Securities in  uncertificated  form;  provided that such action
shall not adversely  affect the interests of the holders of the Debt  Securities
in any  material  respect;  (v) to change or  eliminate  any  provisions  of the
Indenture;  provided that any such change or elimination  shall become effective
only when there are no Debt  Securities  outstanding of any series created prior
thereto which are entitled to the benefit of such provision;  (vi) to secure the
Debt Securities;  (vii) to establish the form or terms of Debt Securities of any
series,  including  the  provisions  and  procedures,  if  applicable,  for  the
conversion  of such Debt  Securities  into common  shares or  preferred  shares;
(viii) to provide for the acceptance of  appointment  by a successor  Trustee or
facilitate the administration of the trusts under the Indenture by more than one
Trustee;  (ix) to cure any ambiguity,  defect or inconsistency in the Indenture;
provided that such action shall not adversely affect the interests of holders of
Debt Securities of any series in any material respect;  or (x) to supplement any
of the  provisions  of the  Indenture  to the  extent  necessary  to  permit  or
facilitate  defeasance  and  discharge  of any  series of such Debt  Securities;
provided  that such  action  shall not  adversely  affect the  interests  of the
holders of the Debt Securities of any series in any material respect.

         The Indenture will provide that in  determining  whether the holders of
the requisite  principal  amount of outstanding Debt Securities of a series have
given any request, demand,  authorization,  direction, notice, consent or waiver
thereunder  or  whether a quorum is  present  at a meeting  of  holders  of Debt
Securities, (i) the principal amount of an Original Issue Discount Security that
shall be deemed to be outstanding  shall be the amount of the principal  thereof
that  would  be due  and  payable  as of the  date of  such  determination  upon
declaration of acceleration of the maturity  thereof,  (ii) the principal amount
of a Debt  Security  denominated  in a  foreign  currency  that  shall be deemed
outstanding  shall be the U.S. dollar  equivalent,  determined on the issue date
for such Debt Security,  of the principal amount (or, in the case of an Original
Issue Discount  Security,  the U.S. dollar  equivalent on the issue date of such
Debt  Security of the amount  determined  as  provided in (i) above),  (iii) the
principal amount of an indexed security that shall be deemed  outstanding  shall
be the  principal  face amount of such  indexed  security at original  issuance,
unless  otherwise  provided  with  respect  to  such  indexed  security  in  the
Indenture,  and (iv) Debt  Securities  owned by the Company or any other obligor
upon the Debt  Securities  or any  affiliate  of the  Company  or of such  other
obligor shall be disregarded.

         The Indenture  will contain  provisions  for convening  meetings of the
holders of Debt  Securities of a series.  A meeting may be called at any time by
the Trustee,  and also, upon request,  by the Company or the holders of at least
25% in principal  amount of the outstanding  Debt Securities of such series,  in
any such case,  upon notice given as provided in the  Indenture.  Except for any
consent  that  must be given by the  holder of each Debt  Security  affected  by
certain modifications and amendments of the Indenture,  any resolution presented
at a meeting or adjourned  meeting duly  reconvened at which a quorum is present
may be adopted by the affirmative vote of the holders of a

                                       25

majority in principal  amount of the outstanding Debt Securities of that series;
provided,  however,  that,  except as referred  to above,  any  resolution  with
respect to any  request,  demand,  authorization,  direction,  notice,  consent,
waiver or other  action  that may be made,  given or taken by the  holders  of a
specified percentage,  which is less than a majority, in principal amount of the
outstanding Debt Securities of a series may be adopted at a meeting or adjourned
meeting duly reconvened at which a quorum is present by the affirmative  vote of
the holders of such specified  percentage in principal amount of the outstanding
Debt Securities for that series.  Any resolution passed or decision taken at any
meeting of holders of Debt Securities of any series duly held in accordance with
the Indenture will be binding on all holders of Debt  Securities of that series.
The quorum at any meeting  called to adopt a resolution,  and at any  reconvened
meeting,  will be persons holding or representing a majority in principal amount
of the outstanding Debt Securities of a series;  provided,  however, that if any
action is to be taken at such  meeting with respect to a consent or waiver which
may be given by the holders of not less than a specified percentage in principal
amount of the outstanding  Debt  Securities of a series,  the persons holding or
representing  such specified  percentage in principal  amount of the outstanding
Debt Securities of such series will constitute a quorum.

         Notwithstanding  the foregoing  provisions,  the Indenture will provide
that if any action is to be taken at a meeting of holders of Debt  Securities of
any  series  with  respect to any  request,  demand,  authorization,  direction,
notice,  consent,  waiver or other action that the Indenture  expressly provides
may be  made,  given  or taken by the  holders  of such  series  and one or more
additional  series:  (i) there shall be no minimum quorum  requirement  for such
meeting and (ii) the principal amount of the outstanding Debt Securities of such
series that vote in favor of such  request,  demand,  authorization,  direction,
notice,  consent,  waiver  or  other  action  shall  be taken  into  account  in
determining  whether such request,  demand,  authorization,  direction,  notice,
consent,  waiver  or other  action  has been  made,  given  or taken  under  the
Indenture.

Discharge, Defeasance and Covenant Defeasance

         The Company may discharge certain  obligations to holders of any series
of Debt  Securities  that have not  already  been  delivered  to the Trustee for
cancellation  and that either have become due and payable or will become due and
payable  within  one year (or  scheduled  for  redemption  within  one  year) by
irrevocably  depositing  with the Trustee,  in trust,  funds in such currency or
currencies,  currency unit or units or composite currency or currencies in which
such Debt  Securities  are  payable  in an amount  sufficient  to pay the entire
indebtedness  on such Debt  Securities in respect of principal (and premium,  if
any) and  interest  to the date of such  deposit (if such Debt  Securities  have
become due and payable) or to the stated  maturity or  redemption  date,  as the
case may be.

         The Indenture may provide that, if certain  provisions thereof are made
applicable  to the  Debt  Securities  of or  within  a  series  pursuant  to the
Indenture,  the Company may elect either (i) to defease and be  discharged  from
any and all  obligations  with respect to such Debt  Securities  (except for the
obligation to pay  additional  amounts,  if any, upon the  occurrence of certain
events of tax,  assessment  or  governmental  charge with respect to payments on
such Debt Securities and the obligations to register the transfer or exchange of
such Debt  Securities,  to replace  temporary or mutilated,  destroyed,  lost or
stolen Debt Securities,  to maintain an office or agency in respect of such Debt
Securities and to hold moneys for payment in trust) ("defeasance") or (ii) to be
released from its obligations with respect to such Debt Securities under certain
sections  of  the  Indenture   (including  the   restrictions   described  under
"Description of the New Notes--Certain  Covenants") and, if provided pursuant to
the  Indenture,  its  obligations  with respect to any other  covenant,  and any
omission to comply with such  obligations  shall not  constitute a default or an
event of default with respect to such Debt Securities  ("covenant  defeasance"),
in either case upon the irrevocable  deposit by the Company with the Trustee, in
trust, of an amount,  in such currency or currencies,  currency unit or units of
composite  currency or currencies in which such Debt  Securities  are payable at
stated  maturity,  or  Government  Obligations  (as  defined  below),  or  both,
applicable  to such Debt  Securities  which  through  the  scheduled  payment of
principal and interest,  in accordance with their terms will provide money in an
amount sufficient to pay the principal of (and premium,  if any) and interest on
such Debt  Securities,  and any  mandatory  sinking fund or  analogous  payments
thereon, on the scheduled dates therefor.

         Such a trust  may be  established  only if,  among  other  things,  the
Company has  delivered to the Trustee an opinion of counsel (as specified in the
Indenture)  to the  effect  that the  holders of such Debt  Securities  will not
recognize income,  gain or loss for U.S. federal income tax purposes as a result
of such defeasance or covenant

                                       26

defeasance  and will be subject to U.S.  federal income tax on the same amounts,
in the same  manner  and at the same  times as would  have been the case if such
defeasance or covenant defeasance had not occurred.

         "Government   Obligations"   means  securities  which  are  (i)  direct
obligations of the United States of America or the  government  which issued the
foreign  currency  in which  the Debt  Securities  of a  particular  series  are
payable,  for the  payment of which its full faith and credit is pledged or (ii)
obligations  of a person  controlled or supervised by and acting as an agency or
instrumentality  of the United States of America or such government which issued
the foreign  currency in which the Debt  Securities  of a particular  series are
payable, the payment of which is unconditionally  guaranteed as a full faith and
credit  obligation  by the United  States of  America or such other  government,
which,  in either  case,  are not  callable or  redeemable  at the option of the
issuer thereof,  and shall also include a depository receipt issued by a bank or
trust company as custodian with respect to any such  Government  Obligation or a
specific  payment of interest on or principal of any such Government  Obligation
held by such  custodian  for the account of the holder of a depository  receipt;
provided  that (except as required by law) such  custodian is not  authorized to
make any  deduction  from the amount  payable  to the holder of such  depository
receipt from any amount  received by the custodian in respect of the  Government
Obligations  or  the  specific  payment  of  interest  on or  principal  of  the
Government Obligations evidenced by such depository receipt.

         Unless otherwise  provided in the applicable  supplement  indenture for
any series of Debt Securities  (other than the New Notes),  if after the Company
has  deposited  funds and/or  Government  Obligations  to effect  defeasance  or
covenant  defeasance  with  respect to Debt  Securities  of any series,  (i) the
holder  of a Debt  Security  of such  series is  entitled  to,  and does,  elect
pursuant to the Indenture or the terms of such Debt Security to receive  payment
in a currency, currency unit or composite currency other than that in which such
deposit  has been made in respect of such Debt  Security,  or (ii) a  Conversion
Event (as defined  below)  occurs in respect of the  currency,  currency unit or
composite  currency  in which  such  deposit  has been  made,  the  indebtedness
represented  by such Debt  Security  shall be deemed to have been,  and will be,
fully  discharged  and  satisfied  through the payment of the  principal of (and
premium,  if any) and  interest on such Debt  Security as they become due out of
the proceeds  yielded by  converting  the amount so deposited in respect of such
Debt Security into the  currency,  currency unit or composite  currency in which
such  Debt  Security  becomes  payable  as a  result  of such  election  or such
cessation of usage based on the applicable  market  exchange  rate.  "Conversion
Event" means the cessation of use of (i) a currency,  currency unit or composite
currency  both by the  government  of the country which issued such currency and
for  the  settlement  of   transactions  by  a  central  bank  or  other  public
institutions of or within the international banking community, (ii) the ECU both
within the European  Monetary  System and for the settlement of  transactions by
public institutions of or within the European  Communities or (iii) any currency
unit or composite  currency other than the ECU for the purposes for which it was
established.  Unless otherwise provided in the applicable supplemental indenture
for any series of Debt  Securities  (other than the New Notes),  all payments of
principal of (and  premium,  if any) and interest on any Debt  Security  that is
payable  in a  foreign  currency  that  ceases to be used by its  government  of
issuance shall be made in U.S. dollars.

         In the event the Company  effects  covenant  defeasance with respect to
any Debt  Securities  and such Debt  Securities  are  declared  due and  payable
because  of the  occurrence  of any  event of  default  other  than the event of
default  described in clause (d) under "--Events of Default,  Notice and Waiver"
above with respect to certain sections of the Indenture (which sections would no
longer be applicable to such Debt  Securities)  or described in clause (g) under
"--Events of Default,  Notice and Waiver" with respect to any other  covenant as
to which  there has been  covenant  defeasance,  the  amount  in such  currency,
currency unit or composite  currency in which such Debt  Securities are payable,
and Government  Obligations  on deposit with the Trustee,  will be sufficient to
pay amounts due on such Debt Securities at the time of their stated maturity but
may not be sufficient to pay amounts due on such Debt  Securities at the time of
the  acceleration  resulting  from such event of default.  However,  the Company
would  remain  liable  to  make  payment  of  such  amounts  due at the  time of
acceleration.

         The applicable supplemental indenture for any series of Debt Securities
(other  than  the New  Notes)  may  further  describe  the  provisions,  if any,
permitting such defeasance or covenant  defeasance,  including any modifications
to the provisions  described  above,  with respect to the Debt  Securities of or
within a particular series.

                                       27

                    CERTAIN FEDERAL INCOME TAX CONSIDERATIONS

         The following  summary,  which  describes  the principal  United States
Federal income tax consequences resulting from the exchange of Old Notes for New
Notes and the  ownership  and  disposition  of New  Notes,  is based  upon laws,
regulations,  rulings and decisions  now in effect,  all of which are subject to
change   (including   changes  in   effective   dates)  or  possible   differing
interpretations.  The following discussion deals only with Notes held as capital
assets and does not purport to deal with persons in special tax situations, such
as financial  institutions,  banks,  insurance  companies,  regulated investment
companies, dealers in securities or currencies, persons holding Notes as a hedge
against  currency  risks or as a position in a "straddle"  for tax purposes,  or
persons whose functional  currency is not the United States dollar. It also does
not deal with  holders of the Notes other than  original  purchasers  of the Old
Notes.  Persons  considering  owning  the  Notes  should  consult  their own tax
advisors  concerning the application of United States Federal income tax laws to
their  particular  situations  as  well  as any  consequences  of the  purchase,
ownership  and  disposition  of the  Notes  arising  under the laws of any other
taxing jurisdiction.

         As used herein,  the term "U.S.  Holder" means a beneficial  owner of a
Note that is for United  States  Federal  income tax  purposes  (i) a citizen or
resident of the United  States,  (ii) a  corporation  or  partnership  (or other
entity treated as a corporation or partnership  for United States Federal income
tax purposes)  created or organized in or under the laws of the United States or
of any political  subdivision  thereof  (unless  otherwise  provided by Treasury
Regulations),  (iii) an estate the  income of which is subject to United  States
Federal income taxation regardless of its source, (iv) a trust if a court within
the  United   States  is  able  to  exercise   primary   supervision   over  the
administration  of the  trust and one or more  United  States  persons  have the
authority to control all substantial decisions of the trust (or certain electing
trusts in  existence  on August 20,  1996 to the  extent  provided  in  Treasury
Regulations),  or (v) any other person whose income or gain in respect of a Note
is effectively  connected with the conduct of a United States trade or business.
As used herein,  the term "non-U.S.  Holder" means a beneficial  owner of a Note
that is not a U.S. Holder.

         EACH HOLDER IS STRONGLY URGED TO CONSULT ITS TAX ADVISERS REGARDING THE
FEDERAL,  STATE,  LOCAL AND FOREIGN TAX CONSEQUENCES OF EXCHANGING OLD NOTES FOR
NEW NOTES AND HOLDING AND DISPOSING OF THE NEW NOTES.

Exchange Offer

         An exchange of Old Notes for New Notes  pursuant to the Exchange  Offer
should be regarded for Federal income tax purposes as a nontaxable  continuation
of the Old Notes,  and a holder should have the same adjusted  basis and holding
period  in the New Notes  upon  receipt  as it had in the Old Notes  immediately
before the exchange.

The Notes

         For U.S.  Federal  income  tax  purposes,  each Note will be treated as
indebtedness issued by the Company.

U.S. Holders

         Interest.  Interest on a Note will generally be includible in the gross
income of a U.S. Holder as ordinary  interest income at the time the interest is
received or when it accrues in accordance with the U.S.  Holder's regular method
of tax accounting.  Such interest will be treated as U.S. source income for U.S.
Federal income tax purposes.

         Disposition.  A U.S. Holder will recognize  taxable gain or loss on the
sale,  exchange,  redemption,  retirement or other  disposition  of a Note in an
amount equal to the difference between the amount realized from such disposition
(other than amounts  attributable  to accrued  interest which would otherwise be
taxable as ordinary interest income) and the U.S. Holder's adjusted tax basis in
the Note.  Such gain or loss generally will be capital gain or loss, and will be
long-term  capital  gain or loss if the U.S.  Holder  has held the Note for more
than one year at the time of disposition; preferential rates of tax may apply to
gains recognized by noncorporate U.S. Holders upon the disposition of Notes held
for more than eighteen months.

                                       28


         Gain or Income Received by a Foreign Corporation. A foreign corporation
whose  income or gain in respect  of a Note is  effectively  connected  with the
conduct of a United  States trade or business,  in addition to being  subject to
regular U.S. Federal income tax, may be subject to a branch profits tax equal to
30% of its  "effectively  connected  earnings and profits" within the meaning of
the Internal  Revenue Code of 1986,  as amended  (the  "Code"),  for the taxable
year, as adjusted for certain items,  unless it qualifies for a lower rate under
an applicable tax treaty (as modified by the branch profits tax rules).

Non-U.S. Holders

         Generally,  a non-U.S.  Holder  will not be  subject  to United  States
Federal income taxes on payments of principal, premium, if any, or interest on a
Note,  or on any gain upon  disposition  or  retirement  of a Note,  if (i) such
non-U.S. Holder does not own 10% or more of the shares of beneficial interest of
the Company and (ii) the last United  States  payor in the chain of payment (the
"Withholding  Agent") has received in the year in which a payment of interest or
principal occurs, or in either of the two preceding  calendar years, a statement
signed by the beneficial owner of the Note under penalties of perjury certifying
that such owner is not a U.S.  Holder and  providing the name and address of the
beneficial  owner.  The  statement  may be made on an Internal  Revenue  Service
("IRS") Form W-8 or a substantially  similar form, and the beneficial owner must
inform the  Withholding  Agent of any change in the information on the statement
within 30 days of such change.  If a Note is held through a securities  clearing
organization  or certain  other  financial  institutions,  the  organization  or
institution may provide a signed statement to the Withholding Agent. However, in
such case,  the signed  statement  must be accompanied by a copy of the IRS Form
W-8 or the substitute form provided by the beneficial  owner to the organization
or institution.  Interest received or gain recognized by a non-U.S. Holder which
does not qualify for  exemption  from  taxation will be subject to United States
Federal  income  tax and  withholding  tax at a rate of 30%  unless  reduced  or
eliminated by applicable tax treaty.

         Treasury  Regulations issued on October 6, 1997 (the "New Regulations")
alter the withholding rules on interest paid to a non-U.S. Holder of a Note. The
New  Regulations  are  generally  effective  with respect to interest paid after
December  31,  1998.  Withholding  will  generally  be  excused  under  the  New
Regulations  if the  non-U.S.  Holder  owns  less  than  10% of  the  shares  of
beneficial  interest  of the  Company  and if such  non-U.S.  Holder  executes a
necessary IRS Form W-8. Moreover, under the New Regulations, to obtain a reduced
rate of withholding under an income tax treaty, a non-U.S. Holder generally will
be  required  to  provide  an IRS Form W-8  certifying  such  non-U.S.  Holder's
entitlement  to benefits  under the treaty.  The New  Regulations  also  provide
special  rules  to  determine   whether,   for  purposes  of   determining   the
applicability  of a tax treaty,  interest  paid to a non-U.S.  Holder that is an
entity should be treated as paid to the entity or to those holding the ownership
interests in that entity,  and whether such entity or such holders in the entity
are entitled to benefits under the tax treaty.  The New  Regulations  also alter
the information  reporting and backup  withholding  rules applicable to non-U.S.
Holders and,  among other things,  provide  certain  presumptions  under which a
non-U.S. Holder is subject to backup withholding and information reporting until
certification  of non-U.S.  status is received  from such non-U.S.  Holder.  The
foregoing is not intended to be a complete  discussion  of the New  Regulations,
and non-U.S. Holders are urged to consult their tax advisors with respect to the
effect of the New Regulations on an investment in the Notes.

         The Notes will not be includible in the estate of a non-U.S. Holder for
United  States  estate tax  purposes  unless the  individual  owns  directly  or
indirectly  10% or more of the shares of beneficial  interest of the Company or,
at the time of such individual's  death,  payments in respect of the Notes would
have been  effectively  connected with the conduct by such individual of a trade
or business in the United States.

Backup Withholding

         Backup withholding of United States Federal income tax at a rate of 31%
may apply to payments made in respect of the Notes to registered  owners who are
not "exempt recipients" and who fail to provide certain identifying  information
(such as the registered owner's taxpayer  identification number) in the required
manner. Generally,  individuals are not exempt recipients,  whereas corporations
and certain other  entities  generally are exempt  recipients.  Payments made in
respect of the Notes to a U.S.  Holder must be  reported to the IRS,  unless the
U.S. Holder is an exempt recipient or establishes an exemption.  Compliance with
the identification procedures described in the

                                       29



preceding section would establish an exemption from backup withholding for those
non-U.S. Holders who are not exempt recipients.

         In addition, upon the sale of a Note by or through a broker, the broker
must  withhold 31% of the entire  purchase  price,  unless either (i) the broker
determines  that the seller is a corporation  or other exempt  recipient or (ii)
the seller provides,  in the required manner,  certain  identifying  information
and, in the case of a non-U.S.  Holder, certifies that such seller is a non-U.S.
Holder (and certain other conditions are met). Such a sale must also be reported
by the  broker to the IRS,  unless  either (i) the  broker  determines  that the
seller is an exempt recipient or (ii) the seller  certifies its non-U.S.  status
(and certain other conditions are met).  Certification of the registered owner's
non-U.S.  status  would be made  normally on an IRS Form W-8 under  penalties of
perjury,  although  in  certain  cases  it  may  be  possible  to  submit  other
documentary evidence.

         Any amounts withheld under the backup  withholding rules from a payment
to a  beneficial  owner  would be allowed as a refund or a credit  against  such
beneficial  owner's  United  States  Federal  income tax  provided  the required
information is furnished to the IRS.


                              PLAN OF DISTRIBUTION

         Each broker-dealer that receives New Notes for its own account pursuant
to the Exchange  Offer must  acknowledge  that it will  deliver a prospectus  in
connection  with any resale of such New  Notes.  This  Prospectus,  as it may be
amended or  supplemented  from time to time, may be used by a  broker-dealer  in
connection  with  resales of New Notes  received in exchange for Old Notes where
such Old Notes were  acquired as a result of  market-making  activities or other
trading  activities.  The  Company  has agreed for a period of at least 120 days
after the consummation of the Exchange Offer to make this Prospectus, as amended
or supplemented,  available to any  broker-dealer for use in connection with any
such  resale.  In  addition,  until  __________,  1998,  all  dealers  effecting
transactions in the New Notes may be required to deliver a prospectus.

         The Company will not receive any proceeds from any sale of New Notes by
broker-dealers.  New Notes  received by  broker-dealers  for their own  accounts
pursuant  to the  Exchange  Offer  may be sold  from time to time in one or more
transactions in the over-the-counter  market, in negotiated transactions through
the  writing  of options on the New Notes or a  combination  of such  methods of
resale,  at market prices prevailing at the time of resale, at prices related to
such prevailing  market prices or at negotiated  prices.  Any such resale may be
made directly to purchasers or to or through  brokers or dealers who may receive
compensation   in  the  form  of  commissions  or  concessions   from  any  such
broker-dealer  and/or the  purchasers of any such New Notes.  Any  broker-dealer
that resells New Notes that were received by it for its own account  pursuant to
the Exchange Offer and any broker or dealer that  participates in a distribution
of such New Notes may be deemed to be an "underwriter" within the meaning of the
Securities  Act  and  any  profit  on any  such  resale  of New  Notes  and  any
commissions  or  concessions  received  by any such  persons may be deemed to be
underwriting  compensation  under the Securities  Act. The Letter of Transmittal
states  that  by  acknowledging  that  it  will  deliver  and  by  delivering  a
prospectus,  a  broker-dealer  will  not  be  deemed  to  admit  that  it  is an
"underwriter" within the meaning of the Securities Act.

         For a  period  of at least  120  days  after  the  consummation  of the
Exchange  Offer,  the  Company  will  promptly  send  additional  copies of this
Prospectus   and  any  amendment  or  supplement  to  this   Prospectus  to  any
broker-dealer  that requests such  documents in the Letter to  Transmittal.  The
Company has agreed to pay all expenses incident to the Exchange Offer (including
the expenses of any special counsel for the holders of the Old Notes) other than
commissions  or  concessions  of any brokers or dealers and will  indemnify  the
holders of the Old Notes  participating  in the Exchange  Offer  (including  any
broker-dealers)  against certain  liabilities,  including  liabilities under the
Securities Act.


                              TRANSFER RESTRICTIONS

         Unless and until an Old Note is  exchanged  for a New Note  pursuant to
the Exchange Offer, its will bear the following legend on the face thereof:

                                       30





         THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
         AS  AMENDED  (THE  "SECURITIES  ACT"),  AND  SUCH  SECURITY  MAY NOT BE
         OFFERED,  SOLD,  PLEDGED  OR  OTHERWISE  TRANSFERRED  EXCEPT (1) TO THE
         COMPANY,  (2) TO A PERSON  WHOM THE  SELLER  REASONABLY  BELIEVES  IS A
         QUALIFIED INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE
         SECURITIES ACT IN A TRANSACTION  MEETING THE REQUIREMENTS OF RULE 144A,
         (3) IN AN OFFSHORE  TRANSACTION IN ACCORDANCE WITH RULE 903 OR RULE 904
         OF REGULATION S UNDER THE SECURITIES  ACT, (4) PURSUANT TO AN EXEMPTION
         FROM  REGISTRATION  PROVIDED BY RULE 144 UNDER THE  SECURITIES  ACT (IF
         AVAILABLE),   OR  (5)  IN  A  TRANSACTION  OTHERWISE  EXEMPT  FROM  THE
         REGISTRATION  REQUIREMENTS  OF THE  SECURITIES  ACT,  IN  EACH  CASE IN
         ACCORDANCE WITH ANY OTHER APPLICABLE LAW.

         TRANSFERS AND EXCHANGES OF THIS SECURITY ARE SUBJECT TO RESTRICTIONS AS
         PROVIDED IN THE INDENTURE.

         The New Notes will not contain such restrictive legends or be otherwise
subject to the restrictions on their transfer,  except that the New Global Notes
shall bear the following legend on the face thereof:

         UNLESS THIS NOTE IS PRESENTED BY AN  AUTHORIZED  REPRESENTATIVE  OF THE
         DEPOSITORY  TRUST  COMPANY,  A NEW  YORK  CORPORATION  ("DTC"),  TO THE
         COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT,
         AND ANY NOTE ISSUED IS  REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH
         OTHER NAME AS IS REQUESTED BY AN AUTHORIZED  REPRESENTATIVE OF DTC (AND
         ANY  PAYMENT  IS MADE  TO CEDE & CO.  OR TO  SUCH  OTHER  ENTITY  AS IS
         REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE
         OR OTHER USE  HEREOF  FOR  VALUE OR  OTHERWISE  BY OR TO ANY  PERSON IS
         WRONGFUL  INASMUCH AS THE REGISTERED  OWNER HEREOF,  CEDE & CO., HAS AN
         INTEREST HEREIN.


                                  LEGAL MATTERS

         Certain legal matters with respect to the New Notes will be passed upon
for the Company by Sullivan & Worcester LLP, Boston,  Massachusetts.  Sullivan &
Worcester  LLP will rely, as to all matters of Maryland law, upon the opinion of
Piper & Marbury L.L.P.,  Baltimore,  Maryland. Barry M. Portnoy was a partner in
the firm of  Sullivan &  Worcester  LLP until  March 31,  1997 and is a Managing
Trustee  of the  Company  and of HPT,  a director  and 50%  shareholder  of HRPT
Advisors, Inc. ("Advisors") and REIT Management & Research,  Inc., the Company's
investment  advisor ("RMR"),  and a director and/or  significant  shareholder of
certain  lessees  of the  Company.  Sullivan &  Worcester  LLP  represents  HPT,
Advisors,  RMR,  certain of such  lessees  and  certain of their  affiliates  on
various matters.

                                     EXPERTS

         The  consolidated  financial  statements of the Company included in the
Company's Current Report on Form 8-K dated February 27, 1998 and incorporated by
reference in the Company's  Annual Report on Form 10-K for the fiscal year ended
December 31, 1997, have been audited by Ernst & Young LLP, independent auditors,
as set forth in their report thereon included therein and incorporated herein by
reference, which, as to the years 1996 and 1997, are based in part on the report
of Arthur  Andersen  LLP,  independent  public  accountants.  Such  consolidated
financial  statements are incorporated herein by reference in reliance upon such
reports  given upon the  authority  of such firms as experts in  accounting  and
auditing.

         The consolidated financial statements of Marriott  International,  Inc.
incorporated by reference in this  Prospectus and elsewhere in the  registration
statement  to the extent and for the periods  indicated in their  reports,  have
been audited by Arthur Andersen LLP,  independent  public  accountants,  and are
included herein in reliance upon the authority of said firm as experts in giving
said reports.


                                       31





                            -------------------------

THE AMENDED AND RESTATED  DECLARATION OF TRUST  ESTABLISHING THE COMPANY,  DATED
JULY 1,  1994,  A COPY OF  WHICH,  TOGETHER  WITH ALL  AMENDMENTS  THERETO  (THE
"DECLARATION"), IS DULY FILED IN THE OFFICE OF THE DEPARTMENT OF ASSESSMENTS AND
TAXATION OF THE STATE OF MARYLAND, PROVIDES THAT THE NAME "HEALTH AND RETIREMENT
PROPERTIES  TRUST" REFERS TO THE TRUSTEES UNDER THE DECLARATION  COLLECTIVELY AS
TRUSTEES,  BUT NOT  INDIVIDUALLY  OR PERSONALLY,  AND THAT NO TRUSTEE,  OFFICER,
SHAREHOLDER,  EMPLOYEE  OR AGENT OF THE  COMPANY  SHALL BE HELD TO ANY  PERSONAL
LIABILITY,  JOINTLY OR SEVERALLY,  FOR ANY OBLIGATION OF, OR CLAIM AGAINST,  THE
COMPANY.  ALL PERSONS  DEALING WITH THE COMPANY,  IN ANY WAY, SHALL LOOK ONLY TO
THE ASSETS OF THE COMPANY FOR THE PAYMENT OF ANY SUM OR THE  PERFORMANCE  OF ANY
OBLIGATION.


                                       32







                               INDEX TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS


                                                                                                             
Introduction to Unaudited Pro Forma Consolidated Financial Statements...........................................F-2

Unaudited Pro Forma Consolidated Balance Sheet as of December 31, 1997..........................................F-3

Unaudited Pro Forma Consolidated Statement of Income for the year ended December 31, 1997.......................F-4

Notes to Unaudited Pro Forma Consolidated Financial Statements..................................................F-5





                                       F-1



                     HEALTH AND RETIREMENT PROPERTIES TRUST

              Unaudited Pro Forma Consolidated Financial Statements

         The  following  unaudited  pro forma  consolidated  balance sheet as of
December  31, 1997 and the  consolidated  statement of income for the year ended
December 31, 1997,  present the consolidated  financial position and the results
of  operations  of Health  and  Retirement  Properties  Trust  and  consolidated
subsidiaries  (the "Company") as if the  transactions  described in the notes to
unaudited financial  statements were consummated on January 1, 1997.  Additional
information  with  respect to such  transactions  is provided  in the  Company's
Annual  Report on Form 10-K for its fiscal year ended  December 31, 1997 (and in
materials incorporated by reference therein), which is incorporated by reference
into  this  Prospectus.   These  unaudited  pro  forma  consolidated   financial
statements  should  be read in  connection  with,  and are  qualified  in  their
entirety by reference to, the separate consolidated  financial statements of the
Company for the year ended December 31, 1997,  included in the Company's Current
Report on Form 8-K dated February 27, 1998,  which is  incorporated by reference
into  this  Prospectus.   These  unaudited  pro  forma  consolidated   financial
statements  are not  necessarily  indicative of the  financial  position and the
expected results of operations of the Company for any future period. Differences
could result from, among other  considerations,  future changes in the Company's
portfolio  of  investments,  changes in interest  rates,  changes in the capital
structure of the Company,  delays in the  acquisition of certain  properties and
changes in property level operating expenses.

                                       F-2





Health and Retirement Properties Trust
Pro Forma Consolidated Balance Sheets
December 31, 1997
(dollars in thousands)
(unaudited)





                                                                                                    Recent
                                                                               Historical       Acquisitions (A)      Pro Forma
                                                                             ------------      -----------------      ---------
                                                                                                          

                                ASSETS

Real estate properties, at cost:                                              $1,969,023         $   91,712          $2,060,735
     Less accumulated depreciation                                               111,669               --               111,669
                                                                              ----------         ----------          ----------
                                                                               1,857,354             91,712           1,949,066
                                                                                                                    
Real estate mortgages, net                                                       104,288               --               104,288
Investment in Hospitality Properties Trust                                       111,134               --               111,134
Other assets                                                                      63,187            (46,712)             16,475
                                                                              ----------         ----------          ----------
                                                                              $2,135,963             45,000           2,180,963
                                                                              ==========         ==========          ==========
                                                                                                                    
                                                                                                                    
                 LIABILITIES AND SHAREHOLDERS' EQUITY                                                               
Bank notes payable                                                            $  200,000         $   45,000          $  245,000
Senior notes and bonds payable, net                                              349,900               --               349,900
Mortgage notes payable                                                            26,329               --                26,329
Convertible subordinated debentures                                              211,650               --               211,650
Other liabilities                                                                 81,824                                 81,824
Shareholders' equity                                                           1,266,260                              1,266,260
                                                                              ----------         ----------          ----------
                                                                              $2,135,963         $   45,000          $2,180,963
                                                                              ==========         ==========          ==========


See accompanying notes to unaudited pro forma financial statements

                                                        F-3




Health and Retirement Properties Trust
Pro Forma Consolidated Statements of Income
Year Ended December 31, 1997
(amounts in thousands, except per share data)
(unaudited)
                                                                                       Second            Third
                                                                                       Quarter          Quarter           West  
                                                                                     Acquisitions    Acquisitions         34th  
                                          Historical     GPI(B)          CSMC(C)         (D)              (D)           Street (E)
                                          -----------  ----------     ----------     -----------     -------------     -----------
                                                                                           
Revenues:                                
     Rental Income                          $188,000    $ 11,959        $  6,831       $  2,948         $  3,179         $ 10,771 
     Interest Income                          20,863        (366)           --             --               --               --   
                                            --------    --------        --------       --------         --------         -------- 
         Total revenues                      208,863      11,593           6,831          2,948            3,179           10,771 
                                            --------    --------        --------       --------         --------         --------  
Expenses:                                                                                                               
     Operating                                26,765       2,053           1,910           --                954            3,641 
     Interest                                 36,766      (1,216)          3,232          1,087            1,463            2,876 
     Depreciation and amortization            39,330       4,156           1,119            627              501            1,869 
     General and administrative               11,670       2,105             249            139              111              415 
                                            --------    --------        --------       --------         --------         -------- 
         Total expenses                      114,531       7,098           6,510          1,853            3,029            8,801 
                                            --------    --------        --------       --------         --------         -------- 
                                                                                                                
Income before equity in earnings of      
     Hospitality Properties Trust and    
     before extraordinary item                94,332       4,495            321           1,095              150            1,970
Equity in earnings of Hospitality        
     Properties Trust                          8,590                                                   
Gain on equity transaction of            
     Hospitality Properties Trust              9,282           -                              -         
                                            --------    --------        --------       --------         --------         -------- 
                                         
Net income before extraordinary item        $112,204    $  4,495        $    321       $  1,095         $    150         $  1,970
                                            --------    --------        --------       --------         --------         -------- 
                                         
Average shares outstanding                    92,168                                                   
                                         
Basic and diluted earnings per commonshare:
Net income before extraordinary item          $ 1.22                                                  
                                      

                                                                              Fourth
                                                                              Quarter
                                          Franklin       Bridgepoint        Acquisitions         Recent
                                          Plaza (F)       Square (G)            (D)          Acquisitions (H)   Pro Forma
                                          ----------    --------------     -------------     ----------------  ------------   
                                                                                                
Revenues:                            
     Rental Income                        $  9,614        $  5,599           $  8,461           $ 13,102        $260,464
     Interest Income                          --              --                 --               20,497
                                          --------        --------           --------           --------        --------
         Total revenues                      9,614           5,599              8,461             13,102         280,961
                                          --------        --------           --------           --------        --------
Expenses:
     Operating                               4,904           2,162              2,634              3,931          48,954
     Interest                                2,486           3,216              4,338              2,925          57,173
     Depreciation and amortization           1,334           1,175              1,269              2,064          53,444
     General and administrative                296             262                283                 46          15,576
                                          --------        --------           --------           --------        --------
         Total expenses                      9,020           6,815              8,524              8,966         175,147
                                          --------        --------           --------           --------        --------
                                                                                                                        
Income before equity in earnings of                                                                                     
     Hospitality Properties Trust and                                                                                   
     before extraordinary item                 594          (1,216)               (63)             4,136         105,814
Equity in earnings of Hospitality                                                                                       
     Properties Trust                                                                                  -           8,590
Gain on equity transaction of                                                                                           
     Hospitality Properties Trust                -                                  -                  -           9,282
                                          --------        --------           --------           --------        --------
                                                                                                                        
Net income before extraordinary ite$      $    594        $ (1,216)           $   (63)          $  4,136        $123,686
                                          --------        --------           --------           --------        --------
Average shares outstanding                                                                                        98,838
                                                                                                                        
Basic and diluted earnings per 
   common share                                                                                                            
Net income before extraordinary item                                                                             $  1.25   

                                                     
See accompanying notes to unaudited pro forma financial statements
         

                                       F-4




         Notes to Unaudited Pro Forma Consolidated Financial Statements

Pro Forma Balance Sheet Adjustments at December 31, 1997.

A.   Represents  the Company's  acquisitions,  during  January 1998 and February
     1998  of  two  medical  office   properties  and  three  commercial  office
     properties located in Pennsylvania, a commercial office property located in
     Texas, a medical office  property  located in  Massachusetts,  a commercial
     office  property  located in Maryland and three medical  office  properties
     located  in  Florida  (collectively,  "Recent  Acquisitions").  The  Recent
     Acquisitions  were funded  with  available  cash and by drawings  under the
     Company's existing revolving line of credit.

Pro Forma Statement of Income Adjustments for the Year Ended December 31, 1997.

B.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's  acquisition of the  government  office  properties  ("Government
     Office Properties") from Government Property Investors,  Inc. Also reflects
     the decrease in interest expense arising from the Company's issuance of its
     common shares of beneficial interest in a March 1997 offering, the proceeds
     of which  were used in part to repay  amounts  then  outstanding  under the
     Company's  revolving line of credit, net of an increase in interest expense
     related to the Company's  assumption of certain debt in connection with the
     acquisition of the Government Office Properties.

C.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's  acquisition  of two medical  office  properties  and two parking
     structures located in Los Angeles,  California,  as well as the increase in
     interest  expense due to the use of the Company's  revolving line of credit
     to fund this acquisition.

D.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's  acquisition of a) a 200 unit retirement housing property located
     in  Spokane,  Washington  and  20  medical  office  clinics  and  ancillary
     structures  located in  Massachusetts  during the second quarter,  b) three
     medical and two commercial office buildings located in Pennsylvania  during
     the third quarter and c) a medical office property  located in Colorado,  a
     medical office  property  located in Maryland,  a medical  office  property
     located  in Rhode  Island,  three  medical  office  properties  located  in
     California,  and a medical  office  property  located in  Washington,  D.C.
     during the third quarter,  as well as the increase in interest  expense due
     to the  use of the  Company's  revolving  line  of  credit  to  fund  these
     acquisitions.

E.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's  acquisition of West 34th Street in New York City, as well as the
     increase  in interest  due to the use of the  Company's  revolving  line of
     credit to fund the acquisition.

F.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's acquisition of Franklin Plaza in Philadelphia,  Pennsylvania,  as
     well as the  increase in interest  expense due to the use of the  Company's
     revolving line of credit to fund the acquisition.

G.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's  acquisition of Bridgepoint Square,  Austin,  Texas.  Bridgepoint
     Square  consists  of five  properties,  of which  one  property  was  under
     construction  at September  30, 1997 and one property was completed in July
     1997.  Also  represents the increase in interest  expense due to the use of
     the Company's revolving line of credit to fund the acquisition.

H.   Represents the increase in rental income, operating expenses,  depreciation
     and amortization and general and  administrative  expenses arising from the
     Company's  Recent  Acquisitions  as well as the increase in interest due to
     the  use  of  the  Company's   revolving  line  of  credit  to  fund  these
     acquisitions.


                                       F-5




                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20. Indemnification of Directors and Officers

         Section 7.4 of the Company's Amended and Restated Declaration of Trust,
filed as an Exhibit to the Company's  Current  Report on Form 8-K dated July 10,
1996,  which  provides  for  indemnification  of  Trustees  and  officers of the
Company, is hereby incorporated by reference.



Item 21. Exhibits

      
4.1   -  Indenture, dated as of December 18, 1997, between the Company and State Street Bank and Trust
         Company, as trustee. (Filed herewith as Exhibit 4.1)
4.2   -  Supplemental Indenture, dated as of December 18, 1997, between the Company and State Street Bank and
         Trust Company, as trustee. (Filed herewith as Exhibit 4.2)
4.3   -  Registration Rights Agreement dated as of December 18, 1997 by and between the Company and Merrill
         Lynch & Co.  (Incorporated by reference to the Company's Current Report on Form 8-K, dated
         December 5, 1997)
5.1   -  Opinion of Sullivan & Worcester LLP (Filed herewith as Exhibit 5.1)
5.2   -  Opinion of Piper & Marbury L.L.P. (Filed herewith as Exhibit 5.2)
8     -  Opinion of Sullivan & Worcester LLP re: tax matters (Filed herewith as Exhibit 8)
12    -  Statement  Regarding  Computation  of  Ratios of  Earnings  to Fixed
         Charges  (Incorporated  by reference to the Company's  Annual Report on
         Form 10-K for the fiscal year ended December 31, 1997)
23.1  -  Consent of Ernst & Young LLP (Filed herewith as Exhibit 23.1)
23.2  -  Consent of Arthur Andersen LLP (Filed herewith as Exhibit 23.2)
23.3  -  Consent of Arthur Andersen LLP (Filed herewith as Exhibit 23.3)
23.4  -  Consent of Sullivan & Worcester LLP (Included in Exhibits 5.1 and 8)
23.5  -  Consent of Piper & Marbury L.L.P. (Included in Exhibit 5.2)
24    -  Powers of Attorney (Included at Page II-4)
25.1  -  Statement of Eligibility of Trustee on Form T-1 (Filed herewith as Exhibit 25.1)
99.1  -  Form of Letter of Transmittal (Filed herewith as Exhibit 99.1)
99.2  -  Form of Notice of Guaranteed Delivery (Filed herewith as Exhibit 99.2)


Item 22. Undertakings

(a)      The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
         a post-effective amendment to this registration statement:

         (i)      To include any prospectus  required by section 10(a)(3) of the
                  Securities Act of 1933, as amended (the "Securities Act");

         (ii)     To reflect in the prospectus any facts or events arising after
                  the effective date of the registration  statement (or the most
                  recent post-effective  amendment thereof) which,  individually
                  or in the  aggregate,  represent a  fundamental  change in the
                  information   set  forth  in  this   registration   statement.
                  Notwithstanding  the  foregoing,  any  increase or decrease in
                  volume of  securities  offered (if the total  dollar  value of
                  securities offered would not exceed that which was registered)
                  and any  deviation  from the low or high end of the  estimated
                  maximum  offering  range  may  be  reflected  in the  form  of
                  prospectus  filed with the Commission  pursuant to Rule 424(b)
                  (Section  230.424(b) of 17 C.F.R.) if, in the  aggregate,  the
                  changes  in  volume  and  price  represent  no more than a 20%
                  change in the maximum  aggregate  offering  price set forth in
                  the  "Calculation of Registration  Fee" table in the effective
                  registration statement; and


                                      II-1

         (iii)    To include any material  information  with respect to the plan
                  of distribution not previously  disclosed in this registration
                  statement or any material  change to such  information in this
                  registration statement;

         provided,  however, that subparagraphs (i) and (ii) do not apply if the
         information  required to be included in a  post-effective  amendment by
         those  paragraphs  is contained in the  periodic  reports  filed by the
         Registrant  pursuant to Section 13 or Section  15(d) of the  Securities
         and  Exchange  Act of 1934 that are  incorporated  by reference in this
         registration statement.

         (2) That  for the  purpose  of  determining  any  liability  under  the
         Securities Act of 1933,  each such  post-effective  amendment  shall be
         deemed to be a new  registration  statement  relating to the Securities
         offered herein,  and the offering of such Securities at that time shall
         be deemed to be the initial bona fide offering thereof.

         (3) To remove from registration by means of a post-effective  amendment
         any of the  Securities  being  registered  which  remain  unsold at the
         termination of the offering.

         (4) That,  for the  purposes of  determining  any  liability  under the
         Securities Act of 1933, each filing of the  Registrant's  annual report
         pursuant to Section 13(a) or Section 15(d) of the  Securities  Exchange
         of  1934  that  is  incorporated  by  reference  in  this  registration
         statement shall be deemed to be a new registration  statement  relating
         to the Securities  offered herein,  and the offering of such Securities
         at that  time  shall be  deemed to be the  initial  bona fide  offering
         thereof.

         (5) That prior to any public  reoffering of the  securities  registered
         hereunder  through  the  use of a  prospectus  which  is  part  of this
         Registration  Statement,  by any person or party who is deemed to be an
         underwriter   within  the  meaning  of  Rule  145(c),   the  Registrant
         undertakes that such reoffering prospectus will contain the information
         called  for  by  the  applicable  registration  form  with  respect  to
         reofferings by persons who may be deemed  underwriters,  in addition to
         the information called for by the other items of the applicable form;

         (6) That every prospectus:  (i) that is filed pursuant to paragraph (4)
         immediately  preceding,  or (ii) that purports to meet the requirements
         of Section  10(a)(3) of the  Securities  Act and is used in  connection
         with an offering of securities  subject to Rule 145, will be filed as a
         part of an amendment to the Registration Statement and will not be used
         until  such   amendment  is  effective,   and  that,  for  purposes  of
         determining   any  liability   under  the  Securities  Act,  each  such
         post-effective  amendment  shall  be  deemed  to be a new  registration
         statement relating to the securities offered therein,  and the offering
         of such  securities at that time shall be deemed to be the initial bona
         fide offering thereof;

         (7) To respond to requests  for  information  that is  incorporated  by
         reference  into the prospectus  pursuant to Item 4, 10(b),  11 or 13 of
         this form,  within one business day of receipt of such request,  and to
         send the  incorporated  documents by first class mail or other  equally
         prompt means.  This includes  information  contained in documents filed
         subsequent to the effective date of this Registration Statement through
         the date of responding to the request.

         (8) To supply by means of a post-effective  amendment,  all information
         concerning  a  transaction,  and the company  being  acquired  involved
         therein,  that was not the subject of and included in the  Registration
         Statement when it became effective.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to trustees,  officers and  controlling  persons of
the  Registrant  pursuant  to the  provisions  described  under  Item 15 of this
registration statement, or otherwise (other than insurance),  the Registrant has
been advised that in the opinion of the Securities and Exchange  Commission such
indemnification  is  against  public  policy  as  expressed  in such Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the Registrant of expenses incurred
or paid by a trustee,  officer or  controlling  person of the  Registrant in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
trustee, officer or controlling person in

                                      II-2





connection with the Securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification by it is against public policy as expressed in such Act and will
be governed by the final adjudication of such issue.

                                      II-3




                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the Registrant has duly caused this  registration  statement to be signed on its
behalf by the  undersigned,  thereunto duly  authorized,  in the City of Newton,
Commonwealth of Massachusetts, on March 11, 1998.

                                  HEALTH AND RETIREMENT PROPERTIES TRUST

                                  By:  /s/ David J. Hegarty
                                       David J. Hegarty
                                       President and Chief Operating Officer

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this  Registration  Statement  on Form S-4  relating  to the New  Notes has been
signed  below  by the  following  persons  in the  capacities  and on the  dates
indicated;  and each of the  undersigned  officers  and  trustees  of Health and
Retirement  Properties Trust,  hereby severally  constitute and appoint David J.
Hegarty, Ajay Saini, Gerard M. Martin and Barry M. Portnoy, and each of them, to
sign for him, and in his name in the capacity indicated below, this Registration
Statement for the purpose of registering  such  securities  under the Securities
Act of 1933, as amended,  and any and all amendments  thereto,  hereby ratifying
and  confirming  our  signatures  as they may be signed by our attorneys to such
Registration Statement and any and all amendments thereto.



               Signature                                    Title                                   Date

                                                                                          
/s/ David J. Hegarty                     President and Chief Operating                         March 11, 1998
David J. Hegarty                         Officer (principal executive officer)

/s/ Ajay Saini                           Treasurer and Chief Financial                         March 11, 1998
Ajay Saini                               Officer

/s/ Bruce M. Gans, M.D.                  Trustee                                               March 11, 1998
Bruce M. Gans, M.D.

/s/ Rev. Justinian Manning, C.P.         Trustee                                               March 11, 1998
Rev. Justinian Manning, C.P.

/s/ Gerard M. Martin                     Managing Trustee                                      March 11, 1998
Gerard M. Martin

/s/ Barry M. Portnoy                     Managing Trustee                                      March 11, 1998
Barry M. Portnoy

/s/ Ralph J. Watts                       Trustee                                               March 11, 1998
Ralph J. Watts



                                      II-4