HEALTH & RETIREMENT PROPERTIES TRUST
8-K, 1996-10-22
REAL ESTATE INVESTMENT TRUSTS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    ---------



                                    FORM 8-K




                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934





        Date of Report (Date of earliest event reported): October 7, 1996





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


       Maryland                    1-9317                     04-6558834

    (State or other           (Commission file              (IRS employer
    jurisdiction of                number)                identification no.)
     incorporation)





 400 Centre Street, Newton, Massachusetts                 02158
 (Address of principal executive offices)               (Zip code)



Registrant's telephone number, including area code:  617-332-3990


<PAGE>


                                      - 2 -


Item 5.           Other Events.

         On  October  7,  1996  Health  and  Retirement  Properties  Trust  (the
"Company")  issued  $240  million  aggregate  principal  amount  of  convertible
subordinated  debentures  in offerings  which were  previously  announced by the
Company.

         Of  such  amount,   $70,000,000  aggregate  principal  amount  of  7.5%
Convertible   Subordinated   Debentures  due  2003,  Series  A  (the  "Series  A
Debentures") were offered and sold in an underwritten registered public offering
(the "Series A Offering"),  and $40,000,000  aggregate principal amount of 7.25%
Convertible  Subordinated  Debentures  due 2001 (the  "7.25%  Debentures")  were
offered and sold in a registered direct placement (the "Registered  Placement").
The Series A Debentures and the 7.25% Debentures are convertible at the holder's
option into the Company's common shares of beneficial  interest,  $.01 par value
per share (the  "Common  Shares"),  at a  conversion  price of $18.00 per Common
Share.  NatWest  Securities  Limited and Merrill  Lynch & Co.  acted as managing
underwriters  with respect to the Series A Offering,  and  National  Westminster
Bank  PLC,  New York  Branch  acted  as  placement  agent  with  respect  to the
Registered  Placement.  The Series A Offering and the Registered  Placement were
made  pursuant  to  the  Company's  shelf  registration  statement  as  declared
effective by the Securities and Exchange Commission on June 24, 1996.

         Lastly, the Company issued  $130,000,000  aggregate principal amount of
7.5%  Convertible  Subordinated  Debentures  due 2003,  Series B (the  "Series B
Debentures") which were offered and sold in an unregistered  offering outside of
the United States (the "Series B Offering") pursuant to Regulation S promulgated
under the Securities Act of 1933, as amended (the "Securities  Act"). The Series
B Debentures  are  convertible  at the holder's  option on and after October 18,
1996, or 40 days following  closing of any exercise of an  overallotment  option
granted by the  Company to the  managers  of the Series B Offering  which may be
exercised at any time, or from time to time, until November 6, 1996, into Common
Shares at a  conversion  price of $18.00 per Common  Share.  NatWest  Securities
Limited and Merrill Lynch  International  were the lead managers of the Series B
Offering.  The  offering  price  of the  Series  B  Debentures  was  100% of the
principal  amount  thereof,   and  the  aggregate  managers'   commissions  were
$3,120,000. The Series B Debentures have not been registered under the Securites
Act and may not be offered or sold in the United States absent  registration  or
an applicable exemption from registration requirements.

Item 7.           Financial Statements, Pro Forma Financial Information
                  and Exhibits.
(c) Exhibits.

         4.1      First  Supplemental  Indenture  between  the Company and Fleet
                  National Bank ("Fleet"), as trustee,  relating to the Series A
                  Debentures (including form of Series A Debenture).

         4.2      Second  Supplemental  Indenture between the Company and Fleet,
                  as  trustee,  relating to the Series B  Debentures  (including
                  form of Series B Debenture).



<PAGE>


                                      - 3 -


         4.3      Third Supplemental Indenture between the Company and Fleet, as
                  trustee,  relating to the 7.25% Debentures  (including form of
                  7.25% Debenture).


<PAGE>


                                      - 4 -

                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

                                      HEALTH AND RETIREMENT
                                       PROPERTIES TRUST



                                       By: /S/ Ajay Saini
                                           Ajay Saini,
                                           Treasurer and Chief
                                            Financial Officer

Date: October 22, 1996




                          FIRST SUPPLEMENTAL INDENTURE
                           Dated as of October 7, 1996

                                       to

                                    INDENTURE

                         Dated as of September 20, 1996

                                     between

                     HEALTH AND RETIREMENT PROPERTIES TRUST

                                       and

                               FLEET NATIONAL BANK

                                   as Trustee


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

                    7.50% Convertible Subordinated Debentures
                               Due 2003, Series A
                           --------------------------



                 

<PAGE>




                          FIRST SUPPLEMENTAL INDENTURE



                  FIRST  SUPPLEMENTAL  INDENTURE,  dated as of  October  7, 1996
(this "Supplement"),  between Health and Retirement Properties Trust, a Maryland
real estate investment trust (the "Company"),  and Fleet National Bank, a United
States Bank, as trustee (the "Trustee"), to that certain Indenture,  dated as of
September 20, 1996, between the Company and the Trustee (the "Indenture").

                  WHEREAS,  the parties  hereto have entered into the  Indenture
which  provides  for the  issuance  by the Company of the  individual  series of
securities thereunder, upon the Company and Trustee entering into a supplemental
indenture to the Indenture authorizing such series; and

                  WHEREAS,  the  Company  wishes to issue  its  first  series of
securities thereunder,  designated its 7.50% Convertible Subordinated Debentures
Due 2003, Series A (the "Securities"); and

                  WHEREAS,   all  acts   necessary  to  constitute   this  First
Supplemental  Indenture as a valid,  binding and legal obligation of the Company
have been done and performed.

                  NOW,  THEREFORE,  witnesseth  that,  in  consideration  of the
premises and of the covenants contained herein, it is hereby agreed as follows:

                                    ARTICLE 1

                   DEFINITIONS AND INCORPORATION BY REFERENCE

SECTION 1.1       Definitions.

         Solely for purposes of this Supplement, Section 101 of the Indenture is
hereby amended by inserting, in their appropriate  alphabetical locations,  each
of the following defined terms:

         "Agent"  means  any   Registrar,   Paying  Agent,   Conversion   Agent,
co-registrar or agent for service of notices and demands.

         "Capital Stock" means any and all shares or other equivalents  (however
designated)  of capital  stock,  including  all common  stock and all  preferred
stock, in the case of corporation, or partnership interests or other equivalents

                                       -1-

<PAGE>



(however designated) in the case of a partnership or common shares of beneficial
interest or other equivalents (however designated) in the case of a trust.

         "Closing  Price" means with  respect to the shares of Capital  Stock of
the Company on any day, (i) the reported last sale price regular way or, in case
no such  reported  sale takes  place on such day,  the  average of the  reported
closing bid and asked  prices  regular way, in either case on the New York Stock
Exchange,  or (ii) if the shares of Capital  Stock are not listed or admitted to
trading on the New York Stock Exchange, the reported last sale price regular way
or, in case no such  reported  sale takes place on such day,  the average of the
reported  closing  bid and asked  prices  regular  way,  in  either  case on the
principal national  securities exchange on which the shares of Capital Stock are
listed or admitted to trading,  or (iii) if the shares of Capital  Stock are not
listed or admitted to trading on any national securities  exchange,  the average
of the closing bid and asked prices as furnished by any New York Stock  Exchange
member firm selected from time to time by the Company for that purpose.

         "Common  Shares"  means  the  Company's  common  shares  of  beneficial
interest,  $.01 par value per share, or as such shares may be reconstituted from
time to time.

         "Default"  means any event which is, or after notice or passage of time
or both would be, an Event of Default.

         "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

         "Indebtedness" as applied to any Person,  means,  without  duplication:
(a) all liabilities and obligations, contingent or otherwise, of such Person (i)
in respect of borrowed  money  whether or not  evidenced by a  promissory  note,
draft or similar instrument (whether or not the recourse of the lender is to the
whole of the assets of such Person or only to a portion thereof); (ii) evidenced
by bonds, notes, debentures or similar instruments;  (iii) evidenced by a letter
of credit or reimbursement  obligation of such Person with respect to any letter
of credit; (iv) evidenced by bankers'  acceptances or similar instruments issued
or accepted by banks;  (v) for the payment of money relating to obligations with
respect to any lease that is properly  classified  as a  liability  on a balance
sheet in accordance  with generally  accepted  accounting  principles;  and (vi)
representing the balance deferred and unpaid for all or any part of the purchase
price of property or services  (except any such balance that  constitutes  (a) a
trade payable or an accrued liability arising in the ordinary course of business

                                       -2-

<PAGE>



or (b) a trade draft or note payable  issued in the ordinary  course of business
in connection  with the purchase of goods or services);  (b) all net obligations
of such Person under Interest Swap and Hedging Obligations;  (c) all liabilities
of others  described in the preceding  clauses (a) and (b) which such Person has
guaranteed or for which it is otherwise  liable and all obligations to purchase,
redeem or acquire any Capital Stock; and (d) any and all deferrals,  amendments,
renewals, extensions, supplements, refinancings or refundings (whether direct or
indirect) of any  liability  or  obligations  described in any of the  preceding
clauses (a), (b) or (c), or this clause (d), whether or not between or among the
same parties.

         "Interest  Swap and Hedging  Obligation"  means any  obligation  of any
person  pursuant  to  any  interest  rate  swap  agreement,  interest  rate  cap
agreement,  interest rate collar  agreement,  interest rate exchange  agreement,
currency  exchange  agreement or any other agreement or arrangement  designed to
protect against  fluctuations in interest rates or currency  values,  including,
without limitation, any arrangement whereby, directly or indirectly, such person
is  entitled  to  receive  from time to time  periodic  payments  calculated  by
applying either a fixed or floating rate of interest on a stated notional amount
in exchange for periodic  payments made by such person  calculated by applying a
fixed or floating rate of interest on the same notional amount.

         "Junior  Securities"  of any  Person  means any  Capital  Stock and any
Indebtedness of such Person that is (i)  subordinated in right of payment to the
Securities  and has no scheduled  installment  of principal  due, by redemption,
sinking fund  payment or  otherwise,  on or prior to the Stated  Maturity of the
Securities and (ii) subordinated in right of payment to all Senior  Indebtedness
at least to the same extent as the Securities.

         "Officer" means the President, the Chief Operating Officer,
any Vice President, the Treasurer, the Chief Financial Officer,
any Assistant Treasurer, the Secretary or any Assistant Secretary
of the Company.

         "Securities Act" means the Securities Act of 1933, as amended from time
to time.

         "Securities" means the securities in the form of Exhibit A
hereto.

         "Senior Indebtedness" means the principal,  premium, if any, and unpaid
interest  (including interest accruing on or after the filing of any petition in
bankruptcy or for reorganization

                                       -3-

<PAGE>



relating  to the  Company  whether or not a claim for  post-filing  interest  is
allowed  in  such  proceeding),  fees,  charges,  expenses,   reimbursement  and
indemnification  obligations,  and all other amounts payable under or in respect
of (i) any Indebtedness of the Company and (ii) any and all deferrals, renewals,
extensions, refundings and refinancings (whether direct or indirect) of any such
Indebtedness,  whether  any  such  Indebtedness  exists  as of the  date of this
Indenture  or shall  hereafter  be  created,  incurred,  assumed or  guaranteed;
provided,   however,   that  Senior  Indebtedness  shall  not  include  (A)  the
Securities,   (B)  the  Series  B  Debentures  or  the  7.25%  Debentures,   (C)
Indebtedness  of the  Company  owed or owing  to a  Subsidiary  or any  officer,
director, trustee or employee of the Company or any Subsidiary, (D) Indebtedness
of the  Company  which,  pursuant  to the terms of the  instrument  creating  or
evidencing such  Indebtedness,  is expressly made pari passu with or subordinate
in right of payment to the  Securities  or (E) any  liability  for taxes owed or
owing to the Company.

         "Series  B   Debentures"   means  the   Company's   7.50%   Convertible
Subordinated Debentures Due 2003, Series B, in the aggregate principal amount of
$149,500,000,  issued pursuant to a Second Supplemental  Indenture,  dated as of
October 7, 1996, between the Company and the Trustee.

         "7.25%  Debentures" means the Company's 7.25% Convertible  Subordinated
Debentures  Due 2001, in the aggregate  principal  amount of up to  $40,000,000,
issued pursuant to a Third Supplemental Indenture,  dated as of October 7, 1996,
between the Company and the Trustee.

         "Trust  Officer",  when  used with  respect  to the  Trustee,  means an
officer of the Trustee  customarily  performing  functions  in  corporate  trust
matters or any other  officer of the  Trustee  to whom such  matter is  referred
because of his knowledge of and familiarity with the particular subject.

SECTION 1.2       Incorporation by Reference to Trust Indenture Act.

         Solely for purposes of this Supplement, Article One of the Indenture is
hereby amended to add thereto the following:

         SECTION  114.  Incorporation  by  Reference  to  Trust  Indenture  Act.
Whenever  this  Indenture  refers to a provision  of the TIA,  the  provision is
incorporated  by reference in and made a part of this  Indenture.  The following
TIA terms used in this Indenture have the following meanings:

         "Commission" means the Securities and Exchange Commission.

                                       -4-

<PAGE>



         "indenture securities" means the Securities.

         "indenture security holder" means a Securityholder.

         "indenture to be qualified" means this Indenture.

         "indenture trustee" or "institutional trustee" means the
         Trustee.

         "obligor" on the indenture securities means the Company or
         any other obligor on the indenture securities.

         All other  terms used in this  Indenture  that are  defined by the TIA,
defined by TIA reference to another statute or defined by Commission  rules have
the meanings assigned to them therein.

                                    ARTICLE 2

                                 THE SECURITIES

SECTION 2.1       Form; Dating; Incorporation of Form in Indenture.

         In accordance  with Sections 201 and 301 of the Indenture,  there shall
be and is hereby authorized a single series of Securities  designated the "7.50%
Convertible  Subordinated  Debentures  Due 2003,  Series A" limited in aggregate
principal  amount  to  $80,500,000,  except  for  Securities  authenticated  and
delivered upon  registration  of transfer of, or in exchange for, or in lieu of,
other Securities pursuant to Sections 9.5 or 10.1 hereof or pursuant to Sections
304, 305, 306 or 1107 of the Indenture.

         Their  fixed  maturity  shall be October  1, 2003,  and they shall bear
interest at the rate per annum of 7.50%, from and including the date of issuance
thereof until maturity or earlier  redemption,  payable  semiannually on April 1
and October 1 commencing April 1, 1997,  until the principal  thereof is paid or
made available for payment.

         The  principal of and premium,  if any, and interest on the  Securities
shall be payable  at the  office or agency of the  Company in the City of Boston
maintained for such purpose and at any other office or agency  maintained by the
Company for such purpose;  provided,  however, that at the option of the Company
payment of  interest  may be made by check  mailed to the  address of the Person
entitled thereto as such address shall appear in the Security Register.


                                       -5-

<PAGE>



         The Securities shall be redeemable as provided in Article 3.

         The  Securities  shall be  subordinated  in right of  payment to Senior
Indebtedness, to the extent provided in Article 11 hereof.

         The Securities shall be convertible as provided in Article 10 hereof.

         The Securities and the Trustee's certificate of authentication shall be
substantially in the form of Exhibit A which is incorporated in and made part of
this  Supplement.  The Securities may have  notations,  legends or  endorsements
required  by law,  stock  exchange  rules,  agreements  to which the  Company is
subject,  or usage. The Company shall approve the form of the Securities and any
notation,  legend or endorsement on them.  Each Security shall be dated the date
of its authentication.

         The terms and provisions  contained in the Securities shall constitute,
and are  hereby  expressly  made,  a part of this  Supplement  and to the extent
applicable, the Company and the Trustee, by their execution and delivery of this
Supplement,  expressly  agree  to such  terms  and  provisions  and to be  bound
thereby.  The  Securities  shall be issuable  only in  registered  form  without
coupons.

SECTION 2.2       Registrar and Agents.

         The Company shall maintain an office or agency where  Securities may be
presented for registration of transfer or for exchange ("Registrar"),  an office
or agency where the Securities may be presented for payment ("Paying Agent"), an
office or agency where  Securities may be presented for conversion  ("Conversion
Agent") and an office or agency where notices and demands to or upon the Company
in respect of the  Securities and this  Supplement may be served.  The Registrar
shall keep a register of the Securities  (the "Security  Register") and of their
transfer and exchange.  The Company may have one or more co- registrars,  one or
more additional Paying Agents and one or more additional  Conversion Agents. The
Company or any Subsidiary may act as Paying Agent and/or  Conversion  Agent. The
term  "Paying  Agent"  includes  any  additional   paying  agent  and  the  term
"Conversion Agent" includes any additional conversion agent.

         The Company may change any Paying Agent, Registrar, Conversion Agent or
Co-Registrar  on sixty (60)  days'  prior  written  notice to the  Trustee.  The
Company  shall notify the Trustee in writing of the name and address of any such
Agent.  If the Company fails to maintain a Registrar,  Paying Agent,  Conversion

                                       -6-

<PAGE>



Agent  or  agent  for  service  of  notices  and  demands,  or fails to give the
foregoing notice, the Trustee shall act as such.

         The Company initially appoints the Trustee as Registrar,  Paying Agent,
Conversion Agent and agent for service of notices and demands.


SECTION 2.3       Paying Agent to Hold Money in Trust.

         On or before 11:00 a.m. (Boston time) on each due date of the principal
of,  premium if any, and interest on any  Securities,  the Company shall deposit
with each Paying Agent a sum sufficient to pay such principal,  premium, if any,
and interest so becoming  due. The Company shall require each Paying Agent other
than the Trustee to agree in writing  that it will hold in trust for the benefit
of Holders of the  Securities  or the Trustee all money held by the Paying Agent
for the payment of principal of,  premium if any, or interest on the  Securities
and to notify the Trustee of any default by the Company (or any other obligor on
the Securities) in making any such payment.  If the Company or a Subsidiary acts
as  Paying  Agent,  it shall on or  before  each due date of the  principal  of,
premium,  if any, or interest on any Securities  segregate the money and hold it
as a separate  trust fund. The Company at any time may require a Paying Agent to
pay all money held by it to the  Trustee  and the Trustee may at any time during
the continuance of any payment default,  upon written request to a Paying Agent,
require such Paying  Agent to  forthwith  pay to the Trustee all sums so held in
trust by such Paying  Agent.  Upon doing so, the Paying Agent (if other than the
Company or a Subsidiary thereof) shall have no further liability for the money.

SECTION 2.4       Outstanding Securities.

         Securities  outstanding  at any  time  are all  Securities  theretofore
authenticated  and  delivered  under  this  Supplement  except:  (a)  Securities
theretofore   canceled  by  the  Trustee  or   delivered   to  the  Trustee  for
cancellation;  and (b)  Securities  in  exchange  for or in lieu of which  other
Securities have been  authenticated  and delivered  pursuant to this Supplement,
other than any Securities in respect of which there shall have been presented to
the Trustee proof  satisfactory  to it that such  Securities  are held by a bona
fide  purchaser  in whose hands such  Securities  are valid  obligations  of the
Issuer;  provided,  that  in  determining  whether  the  Securityholders  of the
requisite principal amount of outstanding Securities are present at a meeting of
Securityholders  for quorum  purposes or have voted or taken or concurred in any
action under this Supplement, including

                                       -7-

<PAGE>



the making of any request, demand, authorization,  direction, notice, consent or
waiver hereunder,  Securities owned by the Company or any other obligor upon the
Securities  or any  Affiliate  of the  Company  or such other  obligor  shall be
disregarded and deemed not outstanding,  except that, in determining whether the
Trustee  shall be  protected in relying  upon any such  determination  as to the
presence of a quorum or upon any such request, demand, authorization, direction,
notice,  consent or waiver, only Securities which a Trust Officer of the Trustee
actually knows to be so owned shall be disregarded.

         If a Security is replaced pursuant to Section 306 of the Indenture,  it
ceases to be outstanding  until the Trustee  receives proof  satisfactory  to it
that the replaced Security is held by a bona fide purchaser.

         If the Paying Agent (other than the Company or a Subsidiary) holds on a
Redemption  Date or maturity date money deposited with it by or on behalf of the
Company  sufficient  to pay the  principal  of,  premium,  if any,  and  accrued
interest on  Securities  payable on that date,  then on and after that date such
Securities cease to be outstanding and interest on them ceases to accrue.

         A Security does not cease to be  outstanding  because the Company or an
Affiliate holds the Security.

SECTION 2.5       Securityholder Lists.

         The  Trustee  shall  preserve  in as  current  a form as is  reasonably
practicable  the most recent list  available to it of the names and addresses of
Securityholders.  If the  Trustee  is not the  Registrar,  the  Registrar  shall
furnish to the Trustee at least  seven  Business  Days prior to each  semiannual
interest  payment  date and at such other times as the  Trustee  may  reasonably
request  in writing a list in such form and as of such date as the  Trustee  may
require of the names and addresses of Securityholders upon which the Trustee may
conclusively  rely.  The Trustee  may  destroy  any such list upon  receipt of a
replacement  list.  The Paying  Agent will solicit  from each  Securityholder  a
certification  of social  security number or taxpayer  identification  number in
accordance with its customary practice and as required by law, unless the Paying
Agent is in possession of such certification. Each Paying Agent is authorized to
impose   back-up   withholding   with   respect  to   payments  to  be  made  to
Securityholders to the extent required by law.

                                       -8-

<PAGE>




SECTION 2.6       CUSIP Number.

         The Company shall use a "CUSIP" number when issuing the Securities. The
Trustee  may use the CUSIP  number in notices of  redemption  or  exchange  as a
convenience to Securityholders;  provided that any such notice may state that no
representation  is made as to the  correctness  or accuracy of the CUSIP  number
printed in the notice or on the  Securities and that reliance may be placed only
on the other identification numbers printed on the Securities.

SECTION 2.7       Restrictions on Transfer.

         The Securities  shall be subject to certain  restrictions  on transfer,
set forth in Section 24 of the form of  Security  attached  hereto as Exhibit A.
The Security shall bear a legend substantially to the following effect:

                  IF  NECESSARY  TO EFFECT  COMPLIANCE  BY THE COMPANY  WITH THE
                  REQUIREMENTS  OF THE INTERNAL  REVENUE CODE 1986,  AS AMENDED,
                  RELATING TO REAL ESTATE  INVESTMENT  TRUSTS,  OWNERSHIP OF THE
                  SECURITY  REPRESENTED  HEREBY MAY BE RESTRICTED BY THE COMPANY
                  AND/OR THE  TRANSFER  HEREOF MAY BE  PROHIBITED,  AS SET FORTH
                  MORE FULLY ON THE REVERSE HEREOF.


                                    ARTICLE 3

                                   REDEMPTION

SECTION 3.1       Effect of Notice of Redemption.

         The  Securities  are subject to  redemption as provided in Section 3 of
the form of Security  attached hereto as Exhibit A. Once notice of redemption is
mailed,  Securities  called  for  redemption  become  due  and  payable  on  the
applicable  Redemption  Date  and  at  the  applicable  Redemption  Price.  Upon
surrender to the Paying Agent,  such Securities  shall be paid at the Redemption
Price, plus accrued interest to the Redemption Date.


                                       -9-

<PAGE>



                                    ARTICLE 4

                                    COVENANTS

SECTION 4.1       Payment of the Securities.

         Section 1001 of the Indenture is hereby  amended by adding  thereto the
following:

         The Company  shall pay interest on overdue  principal  and premium,  if
any,  at the  rate  borne by the  Security;  it shall  pay  interest,  including
post-petition interest in the event of a proceeding under any Bankruptcy Law, on
overdue installments of interest at the same rate to the extent lawful.

SECTION 4.2       Notice of Default.

         Article Ten of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION  1009.  Notice of  Default.  The Company  will,  so long as any
Securities are outstanding,  deliver to the Trustee,  within 10 days of becoming
aware of any  Default or Event of Default in the  performance  of any  covenant,
agreement or condition in this Indenture,  an Officers'  Certificate  specifying
such  Default or Event of  Default,  the period of  existence  thereof  and what
action the Company is taking or proposes to take with respect thereto.


SECTION 4.3       Limitation on Dividends and Other Distributions.

         Article Ten of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION  1010.  Limitation on Dividends  and Other  Distributions.  The
Company will not (i) declare or pay any dividend of make any distribution on its
shares of Common Shares or to holders of Common Shares (other than  dividends or
distributions  payable in Common Shares or other than as the Company  determines
in good faith is  necessary  to  maintain  its  qualification  as a real  estate
investment trust under the Code) or (ii) purchase,  redeem or otherwise  acquire
or retire for value any of its Common  Shares,  if at the time of such action an
Event of Default has occurred and is continuing or would exist immediately after
such action.  Notwithstanding the foregoing, the provisions of this Section 1010
will not prevent (i) the payment of any  dividend  within 60 days after the date
of declaration when the payment would have complied with the foregoing provision
on the date of declaration, or (ii) the

                                      -10-

<PAGE>



Company's  retirement of any of its Common Shares by exchange for, or out of the
proceeds of the substantially concurrent sale of, other Common Shares.

                                    ARTICLE 5

                                    RESERVED

                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

SECTION 6.1       Events of Default.

         (a)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture  is hereby  amended by  deleting  paragraphs  (1) and (2)  thereof and
replacing said paragraphs in their entirety with the following:

               (1) default in the payment of any  installment  interest upon any
          Security or any 7.25% Debenture or any installment of interest upon or
          any Additional Amounts payable in respect of any Series B Debenture or
          of any coupon  appertaining  thereto,  when such interest,  Additional
          Amounts or coupon  becomes due and payable,  and  continuance  of such
          default for a period of 30 days; or

               (2) default in the payment of the  principal of (or  premium,  if
          any, on) any Security or any 7.25% Debenture or any Series B Debenture
          when it becomes due and payable at its Maturity; or

         (b)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture is hereby amended by deleting paragraph (3) thereof.

         (c)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture is hereby  amended by deleting  paragraph (8) thereof and replacing it
with the following:

               (8) the failure by the Company to perform any  conversion  of the
          Securities or any 7.25%  Debenture or the Series B Debentures  and the
          continuance of such failure for a period of 60 days;


                                      -11-

<PAGE>




SECTION 6.2       Rights of Holders to Receive Payment.

         Section  508 of the  Indenture  is hereby  amended to add  thereto  the
following:

         Notwithstanding any other provision of this Indenture, the right of any
Holder  of any  Security  to  convert  such  Security  or to bring  suit for the
enforcement of such right shall not be impaired or affected  without the written
consent of the Holder.

                                    ARTICLE 7

                                     TRUSTEE

SECTION 7.1       Duties of Trustee.

         Article Six of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION 612.  Duties of Trustee.

         (1) The duties and responsibilities of the Trustee shall be as provided
by the TIA. If an Event of Default has occurred and is  continuing,  the Trustee
shall  exercise its rights and powers vested in it by this Indenture and use the
same  degree  of care and skill in their  exercise  as a  prudent  Person  would
exercise or use under the circumstances in the conduct of his own affairs.

         (2) Except during the  continuance of an Event of Default and after the
curing or waiving of all such Events of Default which may have occurred:

                  (a) The  Trustee  need  perform  only  those  duties  that are
         specifically set forth in this Indenture,  and the Trustee shall not be
         liable except for the  performance  of such duties as are  specifically
         set forth in this Indenture, and no others, and no implied covenants or
         obligation shall be read into this Indenture against the Trustee.

                  (b) In the  absence of bad faith on its part,  the Trustee may
         conclusively   rely,  as  to  the  truth  of  the  statements  and  the
         correctness  of the opinions  expressed  therein,  upon any  statements
         certificates or opinions furnished to the Trustee and conforming to the
         requirements of this Indenture. The Trustee, however, shall examine the
         certificates  and opinions to determine  whether or not they conform to
         the requirements of this Indenture.


                                      -12-

<PAGE>



         (3)  The  Trustee  may  not be  relieved  from  liability  for  its own
negligent  action,  its  own  negligent  failure  to  act,  or its  own  willful
misconduct, except that:

               (a) This  paragraph does not limit the effect of paragraph (2) of
          this Section 612.

               (b) The  Trustee  shall not be liable  for any error in  judgment
          made in good faith by a Trust  Officer,  unless it is proved  that the
          Trustee was negligent in ascertaining the pertinent facts.

               (c) The Trustee shall not be liable with respect to any action it
          takes or omits to take in good faith in  accordance  with a  direction
          received by it pursuant to Section 512.

               (d) No provision of this  Indenture  shall require the Trustee to
          expend  or  risk  its own  funds  or  otherwise  incur  any  financial
          liability in the performance of any of its duties  hereunder or in the
          exercise of any of its rights or powers,  if it shall have  reasonable
          grounds  for  believing  that  repayment  of such  funds  or  adequate
          indemnity against such risk or liability is not reasonably  assured to
          it.

               (e)  The  Trustee  shall  have  no  duty  to  inquire  as to  the
          performance  of the  Company's  covenants  in Article  IV  hereof.  In
          addition,  the Trustee  shall not be deemed to have  knowledge  of any
          Default or Event of Default except (i) any Event of Default  occurring
          pursuant to Section  6.1(a)  (provided  that the Trustee is the Paying
          Agent),  or (ii) any  Default  or Event  of  Default  of which a Trust
          Officer of the Trustee shall have received written  notification  from
          the Company or any Holder or obtained actual knowledge.

         (4) Every  provision of this  Indenture  that in any way relates to the
Trustee is subject to paragraphs  (1), (2), (3), (5) and (6) of this Section 612
and subject to Sections 315 and 316 of the TIA.

         (5) Subject to  subsection  (3),  the Trustee may refuse to perform any
duty or exercise any right or power  unless,  subject to the  provisions  of the
TIA,  it receives  indemnity  satisfactory  to it against  any loss,  liability,
expense or fee.

         (6) The Trustee shall not be liable for interest on any money  received
by it.  Money held in trust by the  Trustee  need not be  segregated  from other
funds except to the extent required by law.

                                      -13-

<PAGE>




SECTION 7.2       Eligibility; Disqualification.

         Section 607 of the  Indenture is hereby  amended by adding  thereto the
following:

         The Trustee  shall comply with TIA ss.  310(b),  including the optional
provision permitted by the second sentence of TIA ss. 310(b)(9).

SECTION 7.3       Preferential Collection of Claims Against Company.

         The  Trustee is  subject  to TIA ss.  311(a),  excluding  any  creditor
relationship  listed in TIA ss.  311(b).  A  Trustee  who has  resigned  or been
removed shall be subject to TIA ss. 311(a) to the extent indicated therein.


                                    ARTICLE 8

                     SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 8.1       Defeasance of the Securities.

         The provisions  for defeasance of the Securities  under Section 1402 of
the Indenture and for covenant  defeasance of the Securities  under Section 1403
of the Indenture and all related provisions of Article 14 of the Indenture shall
apply with respect to the Securities.

                                    ARTICLE 9

                             AMENDMENTS AND WAIVERS

SECTION 9.1 Amendments and Waivers with Consent of Holders.

         Section  902 of the  Indenture  is hereby  amended to add  thereto  the
following:

         With the written  consent of the Holders of not less than a majority in
aggregate  principal  amount  of the  Securities  at the time  outstanding,  the
Company,  when  authorized  by Board  Resolution,  and the  Trustee may amend or
supplement  this  Indenture  (any such  amendment or  supplement to be in a form
satisfactory  to the  Trustee) or the  Securities  for the purpose of adding any
provisions to or changing in any manner or eliminating  any of the provisions of
this  Indenture or of any  supplemental  indenture or of modifying in any manner
the  rights of the  Holders of the  Securities.  The  Holders  of a majority  in
principal amount

                                      -14-

<PAGE>



of the Securities then outstanding may waive compliance in a particular instance
by the Company with any provision of this  Indenture or the  Securities  without
notice to any  Securityholder.  Subject to Section  904,  without the consent of
each Holder of Securities affected, however, an amendment, supplement or waiver,
may not:

               (1) make any change in Section 508 of this Indenture;

               (2) make any change that  adversely  affects the right to convert
          any Security; or

               (3) make any  change  in  Article  11 of the  First  Supplemental
          Indenture,  dated as of October 7, 1996,  which adversely  affects the
          rights of any Securityholder.

SECTION 9.2       Revocation and Effect of Consents.

         Section 904 of the  Indenture is hereby  amended by adding  thereto the
following:

         Subject  to  this  Indenture,  each  amendment,  supplement  or  waiver
evidencing  other action shall become  effective in  accordance  with its terms.
Until an amendment, supplement or waiver becomes effective, a consent to it by a
Holder of a Security is a  continuing  consent by the Holder even if notation of
the consent is not made on any Security.  Any such Holder or subsequent  Holder,
however, may revoke the consent as to his Security or portion of a Security,  if
the Trustee  receives the notice of  revocation  before the date the  amendment,
waiver or other action becomes effective.

         The Company may,  but shall not be obligated  to, fix a record date for
the purpose of  determining  the Holders  entitled to consent to any  amendment,
supplement  or  waiver.  If a record  date is fixed,  then  notwithstanding  the
provisions  of the  immediately  preceding  paragraph,  those  Persons  who were
Holders at such record date (or their duly  designated  proxies)  and only those
Persons, shall be entitled to consent to such amendment, supplement or waiver or
to revoke any consent previously given,  whether or not such Persons continue to
be Holders  after such record date.  No consent  shall be valid or effective for
more than 90 days after such  record  date unless  consent  from  Holders of the
principal  amount of Securities  then  outstanding  required  hereunder for such
amendment,  supplement or waiver to be effective  shall have also been given and
not revoked within such 90-day period.


                                      -15-

<PAGE>



         After an amendment, waiver or other action becomes effective,  pursuant
to  Section  901 or 902,  as the case may be, it shall  bind  every  Holder of a
Security.

                                   ARTICLE 10

                            CONVERSION OF SECURITIES

SECTION 10.1      Right of Conversion; Conversion Price.

         Subject to the provisions of Section 7 of the Securities, the Holder of
any Security or Securities shall have the right, at such Holder's option, at any
time before the close of business on October 1, 2003 (except that,  with respect
to any Security or portion of a Security  which shall be called for  redemption,
such right shall  terminate at the close of business on the second  Business Day
preceding the  Redemption  Date fixed for redemption of such Security or portion
of a Security  unless the Company shall  default in payment due upon  redemption
thereof),  to convert,  subject to the terms and  provisions of this Article 10,
the principal of any such Security or Securities or any portion thereof which is
$1,000  principal  amount or an integral  multiple  thereof  into Common  Shares
initially at the conversion  price per share of $18.00 or, in case an adjustment
of such price has taken place pursuant to the  provisions of Section 10.4,  then
at the price as last adjusted  (such price or adjusted  price being  referred to
herein as the "conversion price"), upon surrender of the Security or Securities,
the principal of which is so to be converted,  accompanied  by written notice of
conversion  duly  executed,  to the Company,  at any time during usual  business
hours at the office or agency  maintained  by it for such  purpose,  and,  if so
required  by  the  Conversion  Agent  or  Registrar,  accompanied  by a  written
instrument or  instruments  of transfer in form  satisfactory  to the Conversion
Agent  or  Registrar  duly  executed  by  the  Holder  or  his  duly  authorized
representative in writing. For convenience, the conversion of any portion of the
principal  of any  Security  or  Securities  into Common  Shares is  hereinafter
sometimes referred to as the conversion of such Security or Securities.

SECTION 10.2      Issuance of Shares on Conversion.

         As promptly as practicable after the surrender,  as herein provided, of
any Security or Securities for conversion, the Company shall deliver or cause to
be delivered at its said office or agency,  to or upon the written  order of the
Holder of the Security or Securities so surrendered,  certificates  representing
the  number of fully  paid and  nonassessable  Common  Shares  into  which  such
Security or Securities may be converted in accordance

                                      -16-

<PAGE>



with the provisions of this Article 10. Such conversion  shall be deemed to have
been  made as of the  close  of  business  on the date  that  such  Security  or
Securities shall have been surrendered for conversion by delivery thereof with a
written notice of conversion duly executed,  so that the rights of the Holder of
such Security or Securities  as a  Securityholder  shall cease at such time and,
subject to the  following  provisions of this  paragraph,  the Person or Persons
entitled  to receive  the Common  Shares  upon  conversion  of such  Security or
Securities  shall be treated for all purposes as having become the record holder
or holders of such Common  Shares at such time and such  conversion  shall be at
the conversion  price in effect at such time;  provided,  however,  that no such
surrender  on any date when the stock  transfer  books of the  Company  shall be
closed  shall be  effective  to  constitute  the Person or Persons  entitled  to
receive the Common  Shares upon such  conversion as the record holder or holders
of such Common  Shares on such date,  but such  surrender  shall be effective to
constitute  the Person or Persons  entitled to receive such Common Shares as the
record  holder or holders  thereof for all  purposes at the close of business on
the next  succeeding  day on which  such  stock  transfer  books are  open;  and
provided, further, that in such event such conversion shall be at the conversion
price in effect on the date that such  Security  or  Securities  shall have been
surrendered for conversion by delivery  thereof,  as if the stock transfer books
of the Company had not been closed.  The Company shall give or cause to be given
to the Trustee  written notice  whenever the stock transfer books of the Company
shall be closed.

         Upon  Conversion of any Security  which is converted in part only,  the
Company shall execute and the Trustee  shall  authenticate  and deliver to or on
the order of the Holder thereof,  at the expense of the Company,  a new Security
or  Securities  of  authorized  denominations  in principal  amount equal to the
unconverted portion of such Security.

SECTION 10.3      No Adjustment for Interest or Dividends.

         No payment or  adjustment  in respect of interest on the  Securities or
dividends on the Common Shares shall be made upon the conversion of any Security
or  Securities;  provided,  however,  that if a Security or any portion  thereof
shall be converted  subsequent to any regular record date and on or prior to the
next succeeding interest payment date, the interest falling due on such interest
payment date shall be payable on such interest payment date notwithstanding such
conversion,  and such interest  (whether or not punctually paid or duly provided
for) shall be paid to the Person in whose name such  Security is  registered  at
the close of business on such regular record date and Securities

                                      -17-

<PAGE>



surrendered  for conversion  during the period from the close of business on any
regular  record date to the opening of  business on the  corresponding  interest
payment date must be  accompanied  by payment of an amount equal to the interest
payable on such  interest  payment  date  (except in the case of  Securities  or
portions  thereof which are called for redemption on October 1, 1999 through and
including October 4, 1999, as to which such payment in respect of the October 1,
1999 interest payment date is not required to accompany any such Security).

SECTION 10.4      Adjustment of Conversion Price.

         (1) In  case  the  Company  shall  pay  or  make a  dividend  or  other
distribution on any class of Capital Stock of the Company in Common Shares,  the
conversion  price in effect at the opening of business on the day  following the
date fixed for the  determination  of  shareholders  entitled  to  receive  such
dividend or other distribution shall be reduced so that the same shall equal the
price determined by multiplying such conversion price by a fraction of which the
numerator  shall be the  number of  Common  Shares  outstanding  at the close of
business on the date fixed for such  determination  and the denominator shall be
the sum of such  number of shares  and the total  number of shares  constituting
such  dividend  or other  distribution,  such  adjustment  to  become  effective
immediately  after the opening of business on the day  following  the date fixed
for such determination and in the event that such dividend or other distribution
is not so made, or is made in part, the conversion price shall again be adjusted
to be the conversion price which would then be in effect (i) if such record date
has not been fixed or (ii) based on the actual number of shares actually issued,
as the case may be.

         (2) In case at any time the Company shall (A) subdivide its outstanding
Common  Shares into a greater  number of shares,  (B)  combine  its  outstanding
Common Shares into a smaller number of shares, or (C) issue by  reclassification
of its Common Shares (including any such  reclassification  in connection with a
consolidation or merger in which the Company is the continuing  corporation) any
shares of Capital Stock, the conversion price in effect at the effective date of
such  subdivision,  combination  or  reclassification  shall be  proportionately
adjusted so that the holder of any Security  surrendered  for  conversion  after
such time shall be entitled to receive the  aggregate  number and kind of shares
which,  if such Security had been converted  immediately  prior to such time, he
would have owned upon such  conversion  and been  entitled to receive  upon such
subdivision,  combination  or  reclassification.  Such  adjustment  shall become
effective immediately after the effective date of such subdivision,

                                      -18-

<PAGE>



combination or  reclassification.  Such  adjustment  shall be made  successively
whenever any event listed above shall occur.

         (3) In case at any time the  Company  shall  fix a record  date for the
issuance of rights,  options or  warrants  to all  holders of its Common  Shares
entitling  them to  subscribe  for or  purchase  Common  Shares  (or  securities
convertible  into  Common  Shares)  at a price per share  less than the  current
market  price per Common  Share on such record  date,  the  conversion  price in
effect at the opening of business on the day following such record date shall be
reduced so that the same shall equal the price  determined by  multiplying  such
conversion  price by a fraction  of which the  numerator  shall be the number of
Common Shares  outstanding at the close of business on such record date plus the
number of Common Shares (or its equivalent)  which the aggregate of the offering
price of the total  number of shares so offered  for  subscription  or  purchase
would purchase at such current market price per Common Share and the denominator
shall be the number of Common  Shares  outstanding  at the close of  business on
such record date plus the number of Common Shares (or its equivalent) so offered
for  subscription or purchase,  such reduction to become  effective  immediately
after the opening of business on the day following  such record date;  provided,
however,  that no adjustment to the  conversion  price shall be made pursuant to
this Section  10.4(3) if the holders of Securities  receive,  or are entitled to
receive upon  conversion or otherwise,  the same rights,  options or warrants as
are issued to the holders of Common Shares,  on the same terms and conditions as
such rights,  options or warrants are so issued to the holders of Common Shares.
Such reduction shall be made successively  whenever such a record date is fixed;
and in the event that such rights, options or warrants are not so issued, or are
issued in part, or are issued but all or part of which expire  unexercised,  the
conversion  price shall again be adjusted to be the conversion price which would
then be in effect  (i) if such  record  date had not been fixed or (ii) based on
the actual number of rights,  options or warrants  actually issued,  as the case
may be.

         (4) In case at any time the  Company  shall  fix a record  date for the
making of a distribution, by dividend or otherwise, to all holders of its Common
Shares,  of shares of beneficial  interest in  Hospitality  Properties  Trust, a
Maryland  real  estate  investment  trust  ("HPT"),  then in each  such case the
conversion  price in effect  after  such  record  date  shall be  determined  by
multiplying the conversion price in effect immediately prior to such record date
by a fraction,  of which the numerator  shall be the total number of outstanding
Common Shares  multiplied  by the current  market price per Common Share on such
record date,  less the fair market value (as  determined by a Board  Resolution,
whose

                                      -19-

<PAGE>



determination  shall be conclusive  and described in a statement  filed with the
Trustee) of the shares of beneficial  interest in HPT so to be distributed,  and
of which the denominator shall be the total number of outstanding  Common Shares
multiplied by such current market price per Common Share.  Such adjustment shall
be made  successively  whenever  such a record  date is fixed and  shall  become
effective   immediately   after  the  record  date  for  the   determination  of
stockholders  entitled to receive the  distribution;  and in the event that such
distribution is not so made, the conversion  price shall again be adjusted to be
the  conversion  price which would then be in effect if such record date has not
been fixed.


         (5) For the purpose of any computation under paragraphs (3) and (4) for
this  Section,  the current  market  price per share of Common Stock on any date
shall be deemed to be the average of the Closing  Prices for the 15  consecutive
Business Days selected by the Company  commencing  not more than 30 and not less
than 20 Business Days before the date in question.

         (6) No adjustment in the conversion price shall be required unless such
adjustment (plus any adjustments not previously made by reason of this paragraph
(6))  would  require  an  increase  or  decrease  of at least 1% in such  price;
provided,  however,  that any adjustments  which by reason of this paragraph (6)
are not  required to be made shall be carried  forward and taken into account in
any subsequent  adjustment.  All calculations  under this paragraph (6) shall be
made to the nearest cent.

         (7) The Company may, but shall not be required to, make such reductions
in the  conversion  price,  in addition to those required by paragraph (1), (2),
(3) and (4) of this Section 10.4 as the Company's  Board of Directors  considers
to be  advisable  in order to avoid or diminish any income tax to any holders of
shares of Common Stock  resulting from any dividend or  distribution of stock or
issuance of rights or warrants  to purchase or  subscribe  for stock or from any
event  treated as such for income tax  purposes  or for any other  reasons.  The
Board of Directors  shall have the power to resolve any ambiguity or correct any
error in the  adjustments  made pursuant to this Section 10.4 and its actions in
so doing shall be final and conclusive.


                                      -20-

<PAGE>



         (8) The  adjustments  provided  for in this  Section 10.4 shall be made
successively whenever any event listed above shall occur.

SECTION 10.5      Notice of Adjustment of Conversion Price.

         Whenever the conversion  price for the Securities is adjusted as herein
provided:

                  (1) the Company shall compute the adjusted conversion price in
         accordance with Section 10.4 and shall prepare an Officers' Certificate
         setting forth the adjusted  conversion  price and showing in reasonable
         detail  the  facts  upon  which  such   adjustment  is  based  and  the
         computation  thereof,  and such certificate shall forthwith be filed at
         each office or agency  maintained  for the purpose of conversion of the
         Securities pursuant to Section 2.4 and with the Trustee; and

                  (2) a  notice  stating  that  the  conversion  price  has been
         adjusted and setting forth the adjusted  conversion price shall as soon
         as  practicable  be  mailed  by  the  Company  to  all  Holders  of the
         Securities at their last addresses as they shall appear in the Security
         Register.

                  (3) If the conversion  price is adjusted and the Company fails
         to file an  Officers'  Certificate  with the  Trustee  as  provided  by
         Section 10.5(1) and the Trustee is acting as the Conversion  Agent, the
         Trustee shall be entitled to rely  conclusively on the conversion price
         set forth in the Officer's  Certificate  most recently  received by the
         Trustee (or as set forth in the  Securities  and this  Indenture if the
         conversion price shall not have been adjusted).

SECTION 10.6      Notice of Certain Corporate Action.

         (1)  In case:

               (a) the Company  shall  authorize  the granting to holders of its
          Common Shares of rights or warrants entitling them to subscribe for or
          purchase  any  shares  of  Capital  Stock of any class or of any other
          rights; or

               (b) of any  reclassification of the Common Shares of the Company,
          or of any  distribution of any assets of the Company to the holders of
          its  Common  Shares,  or of any  consolidation  or merger to which the
          Company is a party and for which approval of any  shareholders  of the
          Company  is   required,   or  of  the  sale  or  transfer  of  all  or
          substantially all of the assets of the Company; or

                                      -21-

<PAGE>



               (c) of the voluntary or involuntary  dissolution,  liquidation or
          winding up of the Company;

then the Company shall cause to be filed at each office or agency maintained for
the purpose of  conversion of the  Securities  pursuant to Section 2.2 and shall
cause to be mailed to the  Trustee and all  Holders of the  Securities  at their
last addresses as they shall appear in the Security  Register,  at least 20 days
(or 10 days in any case  specified  in  clause  (a) or (b)  above)  prior to the
applicable record date hereinafter  specified,  a notice stating (x) the date on
which a record is to be taken for the  purpose of such  dividend,  distribution,
rights or warrants, or, if a record is not to be taken, the date as of which the
Holders  of  Common   Shares  of  record  to  be  entitled  to  such   dividend,
distribution,  rights or warrants are to be determined, or (y) the date on which
such  reclassification,  consolidation,  merger,  sale,  transfer,  dissolution,
liquidation  or winding up is expected to become  effective,  and the date as of
which it is expected  that holders of Common  Shares of record shall be entitled
to  exchange  their  Common  Shares  for  securities,  cash  or  other  property
deliverable upon such reclassification,  consolidation,  merger, sale, transfer,
dissolution,  liquidation  or winding up. Such notice  shall also state  whether
such  transaction  will  result  in  any  adjustment  in  the  conversion  price
applicable  to the  Securities  and,  if  so,  shall  state  what  the  adjusted
conversion price will be and when it will become effective.  Neither the failure
to give the notice  required by this  Section,  nor any defect  therein,  to any
particular  Holder shall affect the sufficiency of the notice or the legality or
validity of any such dividend, distribution,  right, warrant,  reclassification,
consolidation,  merger, sale, transfer, liquidation,  dissolution or winding-up,
or the vote on any action authorizing such with respect to the other holders.

         (2) In case the Company or any  Affiliate of the Company  shall propose
to engage in a "Rule  13e-3  Transaction"  as defined in the  Commission's  Rule
13e-3 under the Exchange Act, the Company shall, no later than the date on which
any information with respect to such Rule 13e-3 Transaction is first required to
be given to the  Commission  or any other  Person  pursuant  to such Rule 13e-3,
cause to be mailed to all Holders at their last  addresses  as they shall appear
in the Security Register,  a copy of all information required to be given to the
holders  of the  Company's  Capital  Stock  pursuant  to such  Rule  13e-3.  The
information  required to be given under this  paragraph  shall be in addition to
and not in lieu of any other  information  required  to be given by the  Company
pursuant to this Section 10.6 or any other  provision of the  Securities or this
Indenture.

                                      -22-

<PAGE>




SECTION 10.7      Taxes on Conversions.

         The  Company  will pay any and all stamp or  similar  taxes that may be
payable in respect of the issuance or delivery of Common Shares on conversion of
the Securities  pursuant hereto. The Company shall not, however,  be required to
pay any tax which may be  payable in respect  of any  transfer  involved  in the
issuance and  delivery of Common  Shares in a name other than that of the Holder
of the Security or Securities to be converted,  and no such issuance or delivery
shall be made unless and until the Person  requesting  such issuance has paid to
the Company the amount of any such tax, or has  established to the  satisfaction
of the Company that such tax has been paid.

SECTION 10.8      Fractional Shares.

         No fractional shares or scrip  representing  fractional shares shall be
issued upon any  conversion  of the  Securities.  If any such  conversion  would
otherwise  require the  issuance of a  fractional  share an amount equal to such
fraction  multiplied by the current market price per Common Share (determined as
provided in paragraph  (5) of Section  10.4) on the day of  conversion  shall be
paid to the Holder in cash by the Company.

SECTION 10.9      Cancellation of Converted Securities.

         All  Securities  delivered  for  conversion  shall be  delivered to the
Trustee or the  Conversion  Agent to be canceled by or at the  direction  of the
Trustee or the Conversion Agent,  which shall dispose of the same as provided in
Section 309 of the Indenture.

SECTION           10.10 Provisions in Case of  Consolidation,  Merger or Sale of
                  Assets.

         (1) In case of any  consolidation of the Company with, or merger of the
Company into,  any Person,  or in case of any merger of another  Person into the
Company  (other  than a  consolidation  or merger  which  does not result in any
reclassification,  conversion,  exchange or cancellation  of outstanding  Common
Shares),  or in case of any sale or transfer of all or substantially  all of the
assets of the Company, the Person formed by such consolidation or resulting from
such merger or which acquires such assets, as the case may be, shall execute and
deliver to the Trustee a  supplemental  indenture  providing  that the Holder of
each  Security  then  outstanding  shall have the right  thereafter,  during the
period such  Security  shall be  convertible  as  specified  in Section  10.1 to
convert  such  Security  only into the kind and amount of  securities,  cash and
other property receivable upon such

                                      -23-

<PAGE>



consolidation,  merger,  sale or  transfer  by a holder of the  number of Common
Shares into which such Security might have been converted  immediately  prior to
such consolidation,  merger, sale or transfer. Such supplemental indenture shall
provide for adjustments  which,  for events  subsequent to the effective date of
such supplemental indenture, shall be as nearly equivalent as may be practicable
to the adjustments provided for in this Article 10. The above provisions of this
Section 10.10 shall similarly apply to successive consolidations, mergers, sales
or transfers.

         (2) The Trustee shall not be under any  responsibility to determine the
correctness  of any  provisions  contained  in any such  supplemental  indenture
relating  either  to the kind or amount  of  shares  of stock or  securities  or
property receivable by Holders upon the conversion of their Securities after any
such reclassification,  change, consolidation,  merger, sale or conveyance or to
any adjustment to be made with respect thereto.

SECTION           10.11  Disclaimer  by Trustee of  Responsibility  for  Certain
                  Matters.

         The Trustee and each  Conversion  Agent  (other than the Company or any
Subsidiary)  shall  not at any time be under any duty or  responsibility  to any
Holder of the Securities to determine  whether any facts exist which may require
any adjustment of the conversion  price,  how it should be calculated or what it
should be, or with respect to the nature or extent of any such  adjustment  when
made, or with respect to the method  employed,  or herein or in any supplemental
indenture  provided  to be  employed,  in making the same.  The Trustee and each
Conversion  Agent  (other  than the  Company  or any  Subsidiary)  shall  not be
accountable  with respect to the validity,  value,  kind or amount of any Common
Shares,  or of any  securities  or property,  which may at any time be issued or
delivered  upon the conversion of any Security;  and it makes no  representation
with  respect  thereto.  The Trustee and each  Conversion  Agent (other than the
Company  or any  Subsidiary)  shall not be  responsible  for any  failure of the
Company to issue, transfer or deliver any Common Shares or share certificates or
other  securities or property upon the surrender of any Security for the purpose
of conversion or, subject to Section 7.1, to comply with any of the covenants of
the Company contained in this Article 10.

                                      -24-

<PAGE>




SECTION 10.12     Covenant to Reserve Shares.

         The  Company  covenants  that it will at all  times  reserve  and  keep
available,  free from preemptive  rights,  out of its authorized  Common Shares,
solely for the purpose of issuance upon  conversion of the  Securities as herein
provided,  such  number of  Common  Shares as shall  then be  issuable  upon the
conversion of all outstanding Securities.  The Company covenants that all Common
Shares which shall be so issuable shall be, when issued, duly and validly issued
and fully paid and  non-assessable.  For  purposes of this  Section  10.12,  the
number of Common Shares which shall be  deliverable  upon the  conversion of all
outstanding  Securities  shall be computed as if at the time of computation  all
outstanding Securities were held by a single holder.

                                   ARTICLE 11

                                  SUBORDINATION

SECTION 11.1      Securities Subordinated to Senior Indebtedness.

         The Company and each Holder,  by its  acceptance of  Securities,  agree
that (a) the payment of the principal of and interest on the  Securities and (b)
any other  payment  in respect of the  Securities,  including  on account of the
acquisition or redemption of the Securities by the Company is  subordinated,  to
the extent and in the manner  provided in this Article 11, to the prior  payment
in full of all Senior Indebtedness of the Company,  and all other Obligations in
respect  thereof,  whether  outstanding  at  the  date  of  this  Supplement  or
thereafter   created,   incurred,   assumed  or   guaranteed,   and  that  these
subordination   provisions  are  for  the  benefit  of  the  holders  of  Senior
Indebtedness.

         This Article 11 shall constitute a continuing offer to all Persons who,
in reliance upon such provisions, become holders of, or continue to hold, Senior
Indebtedness,  and such  provisions  are made for the  benefit of the holders of
Senior Indebtedness, and such holders are made obligees hereunder and any one or
more of them may enforce such provisions.

         To the  extent  any  provision  of  this  Article  11  conflicts  or is
inconsistent  with any other provision of the Indenture or this Supplement,  the
provisions of this Article 11 shall govern and supersede  such  inconsistent  or
conflicting provision.


                                      -25-

<PAGE>



SECTION 11.2      No Payment on Securities in Certain Circumstances.

         (a) No payment may be made by the  Company on account of the  principal
of, premium, if any, interest on the Securities, or to acquire or repurchase any
of the  Securities  for  cash  or  property,  or on  account  of the  redemption
provisions of the Securities,  in each case other than payments made with Junior
Securities of the Company,  (i) upon the maturity of any Senior  Indebtedness of
the Company by lapse of time, acceleration (unless waived) or otherwise,  unless
and until all  principal  of,  premium,  if any,  and  interest  on such  Senior
Indebtedness and all other obligations in respect thereof are first paid in full
(or such payment is duly  provided  for), or (ii) in the event of default in the
payment of any  principal  of,  premium,  if any, or  interest  on, or any other
obligation in respect of, any Senior Indebtedness of the Company when it becomes
due and  payable,  whether at maturity or at a date fixed for  prepayment  or by
declaration  or otherwise (a "Payment  Default"),  unless and until such Payment
Default has been cured or waived by the holders of such Senior  Indebtedness  or
otherwise has ceased to exist.

         (b) Upon (i) the happening of an event of default (other than a Payment
Default)  that  permits  the  holders  of  any  Senior   Indebtedness  or  their
representative immediately to accelerate its maturity and (ii) either such event
of default shall be the subject of a judicial  proceeding  or written  notice of
such event of default  given to the  Company  by the  requisite  holders of such
Senior Indebtedness or their  representative (a "Payment Notice"),  then, unless
and until  such  event of  default  has been  cured or  waived by the  requisite
holders of such Senior Indebtedness or otherwise has ceased to exist, no payment
(by set-off or otherwise)  may be made by or on behalf of the Company on account
of the principal of, premium, if any, interest on the Securities,  or to acquire
or repurchase any of the  Securities for cash or property,  or on account of the
redemption  provisions of the  Securities,  in any such case other than payments
made with Junior Securities of the Company.

         (c) In  furtherance  of the  provisions  of Section  11.1, in the event
that, notwithstanding the foregoing provisions of this Section 11.2, any payment
or distribution of assets of the Company (other than Junior Securities) shall be
received by the  Trustee or the Holders or any Paying  Agent at a time when such
payment or  distribution  is prohibited by the  provisions of this Section 11.2,
then such  payment or  distribution  shall be received  and held in trust by the
Trustee or such Holders or Paying Agent (or, if the Company or any  Affiliate of
the  Company is acting as its own Paying  Agent,  money for any such  payment or
distribution shall be segregated or held in trust) for the benefit of the

                                      -26-

<PAGE>



holders of Senior Indebtedness of the Company, and shall be paid or delivered by
the  Trustee or such  Holders or such Paying  Agent,  as the case may be, to the
holders of Senior Indebtedness of the Company remaining unpaid or unprovided for
or their representative or representatives,  or to the trustee or trustees under
any indenture  pursuant to which any  instruments  evidencing any of such Senior
Indebtedness  of the  Company may have been  issued,  ratably  according  to the
aggregate amounts remaining unpaid on account of the Senior  Indebtedness of the
Company  held or  represented  by each,  for  application  to the payment of all
Senior Indebtedness of the Company in full after giving effect to any concurrent
payment and distribution to the holders of such Senior Indebtedness, but only to
the extent  that as to any holder of such  Senior  Indebtedness,  as promptly as
practical following receipt by such holder of written notice from the Trustee to
the holders of such Senior  Indebtedness  that such prohibited  payment has been
received by the Trustee,  Holder(s) or Paying Agent (or has been  segregated  as
provided above), such holder (or a representative therefor) notifies the Trustee
in writing of the  amounts  then due and owing on such Senior  Indebtedness,  if
any,  held by such holder and only the amounts  specified in such notices to the
Trustee shall be paid to the holders of such Senior Indebtedness.

SECTION 11.3      Securities Subordinated to Prior Payment of All
                  Senior Indebtedness on Dissolution, Liquidation or
                  Reorganization.

         Upon any  distribution  of assets of the Company upon any  dissolution,
winding up,  total or partial  liquidation  or  reorganization  of the  Company,
whether voluntary or involuntary, in bankruptcy,  insolvency,  receivership or a
similar  proceeding  or upon  assignment  for the  benefit of  creditors  or any
marshalling of assets or liabilities:

         (a) the holders of all Senior  Indebtedness  of the Company shall first
be entitled to receive payments in full (or have such payment duly provided for)
before  the  Holders  are  entitled  to  receive  any  payment on account of the
principal of, premium,  if any, interest on, and Additional Amounts with respect
to, the Securities (other than Junior Securities);

         (b) any payment or distribution of assets of the Company of any kind or
character,   whether  in  cash,   property  or  securities  (other  than  Junior
Securities)  to which the Holders or the Trustee on behalf of the Holders  would
be entitled (by set-off or otherwise), except for the provisions of this Article
11, shall be paid by the  liquidating  trustee or agent or other  Person  making

                                      -27-

<PAGE>



such a payment or distribution directly to the holders of Senior Indebtedness of
the Company or their  representative  to the extent necessary to make payment in
full of all such Senior  Indebtedness  remaining unpaid,  after giving effect to
any  concurrent   payment  or   distribution  to  the  holders  of  such  Senior
Indebtedness; and

         (c) in the event that,  notwithstanding  the foregoing,  any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities (other than Junior Securities),  shall be received by the
Trustee or the Holders or any Paying Agent (or, if the Company or any  Affiliate
of the Company is acting as its own Paying Agent,  money for any such payment or
distribution  shall be  segregated or held in trust) on account of the principal
of,  premium,  if any,  interest on, or Additional  Amounts with respect to, the
Securities  before all Senior  Indebtedness of the Company is paid in full, such
payment or  distribution  shall be received  and held in trust by the Trustee or
such Holder or Paying Agent (or, if the Company or any  Affiliate of the Company
is acting as its own Paying  Agent,  money for any such payment or  distribution
shall be  segregated  or held in trust) for the  benefit of the  holders of such
Senior  Indebtedness,  or their  respective  representative,  or the  trustee or
trustees under any indenture pursuant to which any instruments evidencing any of
such Senior Indebtedness of the Company may have been issued,  ratably according
to the  respective  amounts of such Senior  Indebtedness  held or represented by
each,  to the extent  necessary to make  payment as provided  herein of all such
Senior  Indebtedness  remaining  unpaid  after giving  effect to all  concurrent
payments and distributions and all provisions  therefor to or for the holders of
such Senior  Indebtedness,  but only to the extent that as to any holder of such
Senior  Indebtedness,  as promptly as practical following receipt by such holder
of written  notice from the  Trustee to the holders of such Senior  Indebtedness
that such  prohibited  payment has been  received by the  Trustee,  Holder(s) or
Paying  Agent (or has been  segregated  as  provided  above),  such holder (or a
representative therefor) notifies the Trustee in writing of the amounts then due
and owing on such Senior Indebtedness,  if any, held by such holder and only the
amounts specified in such notices to the Trustee shall be paid to the holders of
such Senior Indebtedness.

SECTION 11.4      Securityholders to Be Subrogated to Rights of
                  Holders of Senior Indebtedness.

         Subject  to the  payment  in full  of all  Senior  Indebtedness  of the
Company as provided herein, the Holders of Securities shall be subrogated to the
rights of the  holders  of such  Senior  Indebtedness  to  receive  payments  or
distributions  of assets of the Company  applicable  to the Senior  Indebtedness
until all

                                      -28-

<PAGE>



amounts owing on the  Securities  shall be paid in full,  and for the purpose of
such subrogation no such payments or distributions to the holders of such Senior
Indebtedness by the Company, or by or on behalf of the Holders by virtue of this
Article  11,  which  otherwise  would have been made to the  Holders  shall,  as
between the Company and the  Holders,  be deemed to be payment by the Company on
account of such Senior Indebtedness,  it being understood that the provisions of
this  Article 11 are and are  intended  solely for the purpose of  defining  the
relative rights of the Holders,  on the one hand, and the holders of such Senior
Indebtedness, on the other hand.

         If any payment or  distribution  to which the Holders  would  otherwise
have been  entitled  but for the  provisions  of this Article 11 shall have been
applied,  pursuant  to the  provisions  of this  Article  11, to the  payment of
amounts payable under Senior Indebtedness of the Company, then the Holders shall
be entitled to receive from the holders of such Senior Indebtedness any payments
or  distributions  received by such holders of Senior  Indebtedness in excess of
the amount  sufficient  to pay all amounts  payable  under or in respect of such
Senior Indebtedness in full.

SECTION 11.5      Obligations of the Company Unconditional.

         Nothing contained in this Article 11 or elsewhere in this Supplement or
in the  Securities is intended to or shall impair as between the Company and the
Holders,   the   obligation   of  each  such  Person,   which  is  absolute  and
unconditional, to pay to the Holders the principal of, premium, if any, interest
on, and Additional  Amounts with respect to, the Securities as and when the same
shall become due and payable in accordance  with their terms,  or is intended to
or shall affect the relative  rights of the Holders and creditors of the Company
other than the holders of the Senior Indebtedness,  nor shall anything herein or
therein prevent the Trustee or any Holder from exercising all remedies otherwise
permitted by applicable  law upon default under this  Indenture,  subject to the
rights, if any, under this Article 11, of the holders of Senior  Indebtedness in
respect  of cash,  property  or  securities  of the  Company  received  upon the
exercise of any such  remedy.  Notwithstanding  anything to the contrary in this
Article  11 or  elsewhere  in this  Supplement  or in the  Securities,  upon any
distribution  of assets of the  Company  referred  to in this  Article  11,  the
Trustee, subject to the provisions of Sections 602 and 612 of the Indenture, and
the Holders shall be entitled to rely conclusively upon any order or decree made
by any court of competent  jurisdiction in which such  dissolution,  winding up,
liquidation or reorganization  proceedings are pending,  or a certificate of the
liquidating

                                      -29-

<PAGE>



trustee or agent or other Person  making any  distribution  to the Trustee or to
the Holders for the purpose of ascertaining  the Persons entitled to participate
in  such  distribution,  the  holders  of  the  Senior  Indebtedness  and  other
Indebtedness of the Company,  the amount thereof or payable thereon,  the amount
or amounts paid or distributed  thereon and all other facts pertinent thereto or
to this Article 11 so long as such court has been apprised of the provisions of,
or the order,  decree or certificate  makes reference to, the provisions of this
Article 11. The Trustee shall be entitled to rely  conclusively  on the delivery
to it of a written  notice by a person  representing  himself  to be a holder of
Senior Indebtedness (or a trustee or representative on behalf of such holder) to
establish  that such a notice has been given by a holder of Senior  Indebtedness
(or a trustee or representative on behalf of such holder). In the event that the
Trustee  determines,  in good faith,  that  further  evidence  is required  with
respect  to the  right of any  person  as a holder  of  Senior  Indebtedness  to
participate  in any payment or  distribution  pursuant  to this  Article 11, the
Trustee  may  request  such  person  to  furnish   evidence  to  the  reasonable
satisfaction of the Trustee as to the amount of Senior Indebtedness held by such
person, as to the extent to which such person is entitled to participate in such
payment or  distribution,  and as to other facts pertinent to the rights of such
person under this Article 11, and if such evidence is not furnished, the Trustee
may defer any payment to such person pending  judicial  determination  as to the
right of such person to receive such  payment.  Nothing in this Article 11 shall
apply to the claims of, or payments to, the Trustee under or pursuant to Section
606 of the Indenture.

SECTION 11.6      Trustee Entitled to Assume Payments Not Prohibited
                  in Absence of Notice.

         The Trustee or any Paying Agent  (other than the Company  acting as its
own  Paying  Agent)  shall  not at any time be  charged  with  knowledge  of the
existence  of any facts which would  prohibit the making of any payment to or by
the Trustee or such Paying Agent unless and until a Trust Officer of the Trustee
or such Paying Agent (other than the Company acting as its own Paying Agent), as
the case may be,  shall have  received,  no later than one Business Day prior to
such  payment,  written  notice  thereof  from the  Company  or from one or more
holders of Senior Indebtedness or from any representative therefor and, prior to
the receipt of any such written notice,  the Trustee,  subject to the provisions
of  Sections  602 and 612 of the  Indenture,  and  such  Paying  Agent  shall be
entitled in all respects conclusively to assume that no such fact exists.


                                      -30-

<PAGE>



SECTION           11.7 Application by Trustee of Assets Deposited with It.

         Any deposit of assets with the Trustee or the Agent  (whether or not in
trust) for the payment of  principal of or interest  on, or  Additional  Amounts
with respect to, any  Securities  shall be subject to the provisions of Sections
11.1, 11.2, 11.3 and 11.4; provided that, if prior to one Business Day preceding
the date on which by the terms of this  Supplement  any such  assets  may become
distributable for any purpose  (including,  without  limitation,  the payment of
either  principal of or interest on any  Security) the Trustee or a Paying Agent
shall not have received with respect to such assets the written notice  provided
for in Section 11.6, then the Trustee or such Paying Agent shall have full power
and  authority  to receive  such assets and to apply the same to the purpose for
which  they  were  received,  and  shall not be  affected  by any  notice to the
contrary which may be received by it on or after such date.

SECTION 11.8      Subordination Rights Not Impaired by Acts or
                  Omissions of the Company or Holders of Senior
                  Indebtedness.

         No right of any present or future holders of any Senior Indebtedness to
enforce subordination  provisions contained in this Article 11 shall at any time
in any way be prejudiced or impaired by any act or failure to act on the part of
the Company or by any act or failure to act, in good faith,  by any such holder,
or by any  noncompliance  by the  Company  with the  terms  of this  Supplement,
regardless  of any  knowledge  thereof  which  any  such  holder  may have or be
otherwise  charged with. The holders of Senior  Indebtedness may extend,  renew,
modify or amend the terms of the Senior  Indebtedness  or any security  therefor
and release,  sell or exchange such security and otherwise  deal freely with the
Company, all without affecting the liabilities and obligations of the parties to
this Indenture or the Holders.

SECTION 11.9      Securityholders Authorize Trustee to Effectuate
                  Subordination of Securities.

         Each Holder of the Securities by his acceptance  thereof authorizes and
expressly  directs  the  Trustee  on his  behalf to take  such  action as may be
necessary or appropriate to effectuate the subordination provisions contained in
this  Article  11 and to  protect  the rights of the  Holders  pursuant  to this
Supplement,  and appoints  the Trustee its  attorney-in-fact  for such  purpose,
including,  in  the  event  of  any  dissolution,  winding  up,  liquidation  or
reorganization of the Company (whether in bankruptcy, insolvency or receivership
proceedings or upon an

                                      -31-

<PAGE>



assignment for the benefit of creditors of the Company),  the making of a timely
filing of a claim for the unpaid  balance of its Securities in the form required
in said proceedings and cause said claim to be approved. If the Trustee does not
file a proper  claim or proof of debt in the form  required  in such  proceeding
prior to 30 days before the expiration of the time to file such claim or claims,
then the holders of the Senior  Indebtedness or their  representative  are or is
hereby  authorized to have the right to file and are or is hereby  authorized to
file an appropriate  claim for and on behalf of the Holders of said  Securities.
Nothing herein contained shall be deemed to authorize the Trustee or the holders
of Senior  Indebtedness  or their  representative  to authorize or consent to or
accept  or adopt on  behalf of any  Securityholder  any plan of  reorganization,
arrangement, adjustment or composition affecting the Securities or the rights of
any  Holder  thereof,  or to  authorize  the  Trustee  or the  holders of Senior
Indebtedness  or their  representative  to vote in  respect  of the claim of any
Securityholder in any such proceeding.

SECTION 11.10     Right of Trustee to Hold Senior Indebtedness.

         The  Trustee  shall be  entitled to all of the rights set forth in this
Article 11 in respect of any Senior  Indebtedness  at any time held by it to the
same  extent as any other  holder of Senior  Indebtedness,  and  nothing in this
Supplement  shall be  construed  to deprive  the Trustee of any of its rights as
such holder.

SECTION 11.11     Article 11 Not to Prevent Events of Default.

         The failure to make a payment on account of principal of,  premium,  if
any,  interest on, or  Additional  Amounts with  respect to, the  Securities  by
reason of any  provision of this Article 11 shall not be construed as preventing
the  occurrence  of a Default or an Event of Default  under  Section  501 of the
Indenture or in any way prevent the Holders or the Trustee from  exercising  any
right or remedy hereunder or at law or in equity other than the right to receive
payment on the Securities in accordance with the terms of this Article 11.

SECTION 11.12     No Fiduciary Duty of Trustee to Holders of Senior
                  Indebtedness.

         The  Trustee  shall  not be  deemed  to owe any  fiduciary  duty to the
holders  of Senior  Indebtedness,  and  shall not be liable to any such  holders
(other than for its willful  misconduct or negligence) if it shall in good faith
mistakenly pay over or distribute to the Holders of Securities or the Company or
any other Person, cash, property or securities to which any holders

                                      -32-

<PAGE>



of  Senior  Indebtedness  shall be  entitled  by virtue  of this  Article  11 or
otherwise.  Nothing in this  Section  11.12 shall affect the  obligation  of any
other  such  Person to hold such  payment  for the  benefit  of, and to pay such
payment over to, the holders of Senior  Indebtedness or their  representative in
accordance with the provisions hereof.

                                   ARTICLE 12

                                  MISCELLANEOUS

SECTION 12.1      Trust Indenture Act Controls.

         If any provision of this Indenture limits,  qualifies or conflicts with
another provision which is required to be included in this Indenture by the TIA,
the  required  provisions  shall  control.  The  provisions  of TIA Sections 310
through  317  that  impose  duties  on  any  Person  (including  the  provisions
automatically   deemed  included  herein  unless  expressly   excluded  by  this
Indenture)  are a part of and govern this  Indenture,  whether or not physically
contained herein.

SECTION 12.2 Communications by Holders with Other Holders.

         Securityholders  may communicate  pursuant to TIA ss. 312(b) with other
Securityholders  with  respect  to their  rights  under  this  Indenture  or the
Securities.  The Company,  the Trustee, the Registrar and anyone else shall have
the protection of TIA ss. 312(c).

SECTION 12.3      Governing Law.

         The  laws  of The  Commonwealth  of  Massachusetts  shall  govern  this
Supplement and the Securities without regard to principles of conflicts of law.

SECTION 12.4      No Adverse Interpretation of Other Agreements.

         This Supplement may not be used to interpret another indenture, loan or
debt agreement of the Company or a Subsidiary.  Any such indenture, loan or debt
agreement may not be used to interpret this Supplement.

                                      -33-

<PAGE>




SECTION 12.5      Successors.

         All covenants and agreements of the Company in this  Supplement and the
Securities shall bind its successors and assigns.  All agreements of the Trustee
in this Indenture shall bind its successors and assigns.

SECTION 12.6      Multiple Counterparts.

         The parties may sign multiple  counterparts  of this  Supplement.  Each
signed  counterpart  shall  be  deemed  an  original,  but all of them  together
represent the same agreement.

SECTION 12.7      Headings, etc.

         The headings of the Articles and Sections of this  Supplement have been
inserted for  convenience  of reference  only,  are not to be  considered a part
hereof,  and shall in no way modify or restrict  any of the terms or  provisions
hereof.

SECTION 12.8      Severability.

         In case any provision in this Supplement or in the Securities  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining  provisions shall not in any way be affected or impaired  thereby,
and a Holder shall have no claim therefor against any party hereto.


                                      -34-

<PAGE>




         IN WITNESS  WHEREOF,  the parties hereto have caused this Supplement to
be duly executed, all as of the date first written above.

                                  HEALTH AND RETIREMENT PROPERTIES TRUST
                                  a Maryland real estate investment trust



                                  By: /S/ Ajay Saini
                            Name: Ajay Saini
                           Title: Treasurer and Chief Financial Officer


                                  FLEET NATIONAL BANK,
                                    as Trustee



                                  By: /S/ Robert L. Bice II
                            Name: Robert L. Bice II
                           Title: Vice President

                                      -35-

<PAGE>



                                    EXHIBIT A

Unless  and  until  it is  exchanged  in  whole  or in part  for  Securities  in
definitive  form, this Security may not be transferred  except as a whole by the
Depository to a nominee of the  Depository or by a nominee of the  Depository to
the Depository or another  nominee of the Depository or by the Depository or any
such  nominee  to  a  successor  Depository  or  a  nominee  of  such  successor
Depository. Unless this certificate is presented by an authorized representative
of The Depository Trust Company,  a New York  corporation (55 Water Street,  New
York,  New  York)  ("DTC"),  to the  issuer or its  agent  for  registration  of
transfer,  exchange or payment,  and any certificate issued is registered in the
name of Cede & Co.  or such  other  name as may be  requested  by an  authorized
representative  of DTC  (and any  payment  is made to Cede & Co.  or such  other
entity  as may  be  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.1

IF NECESSARY TO EFFECT  COMPLIANCE BY THE COMPANY WITH THE  REQUIREMENTS  OF THE
UNITED STATES INTERNAL REVENUE CODE OF 1986, AS AMENDED, RELATING TO REAL ESTATE
INVESTMENT  TRUSTS,   OWNERSHIP  OF  THE  SECURITY  REPRESENTED  HEREBY  MAY  BE
RESTRICTED BY THE COMPANY AND/OR THE TRANSFER  HEREOF MAY BE PROHIBITED,  AS SET
FORTH MORE FULLY ON THE REVERSE HEREOF.



                     HEALTH AND RETIREMENT PROPERTIES TRUST

                7.50% Convertible Subordinated Debenture Due 2003
                                    Series A

HEALTH AND RETIREMENT PROPERTIES TRUST, a Maryland real estate
investment trust, promises to pay to


7.50%                       S P E C I M E N               7.50%
DUE 2003                                               DUE 2003


or registered assigns, the principal sum of__________ Dollars, on
October 1, 2003


___________________

1 This  paragraph  should be included  only if the  Security is issued in global
form.

                                       A-1

<PAGE>




                  Interest Payment Dates: April 1 and October 1
                     Record Dates: March 15 and September 15


Additional  provisions  of this  Security  are set  forth on other  side of this
Security.


Dated:

HEALTH AND RETIREMENT PROPERTIES TRUST                                SEAL


By:___________________________________



By:___________________________________



CERTIFICATE OF AUTHENTICATION
FLEET NATIONAL BANK,
as Trustee, certifies that this is 
one of the Securities referred to in
the within mentioned Indenture.


By:__________________________________

Authorized Signatory



                                       A-2

<PAGE>



                          [FORM OF REVERSE OF SECURITY]

                     HEALTH AND RETIREMENT PROPERTIES TRUST
           7.50% Convertible Subordinated Debenture Due 2003, Series A


         1. Interest.  Health and Retirement  Properties  Trust, a Maryland real
estate  investment  trust  (the  "Company"),  promises  to pay  interest  on the
principal amount of this Security at the rate per annum shown above. The Company
will pay interest  semiannually  on April 1 and October 1 of each year beginning
April 1, 1997.  Interest on the Securities will accrue from the most recent date
to which  interest has been paid or, if no interest has been paid,  from October
1, 1996;  provided  that,  if there is no  existing  Default  in the  payment of
interest,  and if this Security is authenticated  between a record date referred
to on the face hereof and the next succeeding  interest  payment date,  interest
shall accrue from such interest  payment date.  Interest will be computed on the
basis of a 360 day year of twelve 30-day months.

         2. Method of Payment.  The Company will pay interest on the  Securities
(except defaulted interest) to the persons who are the registered Holders of the
Securities  at the  close  of  business  on the  March 15 or  September  15 next
preceding the interest  payment  date.  Holders must  surrender  Securities to a
Paying Agent to collect  principal  and premium  payments.  The Company will pay
principal,  premium and interest in money of the United  States that at the time
of payment is legal tender for payment of public and private debts. The Company,
however,  may pay  principal,  premium and interest by its check payable in such
money. It may mail an interest check to a Holder's registered address.

         The payment of principal of and premium, if any, on this Security shall
be payable only upon  surrender of this  Security at the office or agency of the
Paying Agent in the City of Boston,  Commonwealth of Massachusetts.  Payments of
principal of,  premium,  if any, and interest on this Security  shall be made at
the office or agency of the Trustee maintained in the Borough of Manhattan, City
and State of New York or the City of Boston, Commonwealth of Massachusetts,  or,
in the  case of any such  payments  other  than the  payment  of  principal  and
premium, if any, at the Company's option, by check mailed to the Person entitled
thereto at such Person's address last appearing on the Company's register.

         3.  Registrar and Agents.  Initially,  Fleet  National Bank will act as
Registrar, Paying Agent, Conversion Agent and agent

                                       A-3

<PAGE>



for  service of notices  and  demands.  The  Company  may change any  Registrar,
co-registrar,  Paying Agent,  Conversion  Agent and agent for service of notices
and demands on sixty days' prior written  notice to the Trustee.  The Company or
any of its Subsidiaries may act as Paying Agent or Conversion  Agent. The office
of  Fleet  National  Bank  for  such  purpose  is One  Federal  Street,  Boston,
Massachusetts 02110, Attn: Corporate Trust Department.

         4. Indenture;  Limitations.  The Company issued the Securities under an
Indenture,  dated as of September 20, 1996 (the "Basic Indenture"),  between the
Company and Fleet  National Bank (the  "Trustee"),  as  supplemented  by a First
Supplemental  Indenture,  dated as of October 7, 1996, (as used herein, the term
"Indenture"  means  the Basic  Indenture  together  with the First  Supplemental
Indenture). Capitalized terms herein are used as defined in the Indenture unless
otherwise  defined herein.  The terms of the Securities  include those stated in
the  Indenture  and those made part of the  Indenture  by reference to the Trust
Indenture  Act of 1939 (15 U.S.  Code ss.ss.  77aaa-77bbbb)  as in effect on the
date of the Indenture.  The  Securities  are subject to all such terms,  and the
Holders of the  Securities  are  referred  to the  Indenture  and said Act for a
statement of them.

         The Securities are general unsecured obligations of the Company limited
to $86,250,000  principal amount.  The Indenture imposes certain  limitations on
the ability of the Company to, among other  things,  make payments in respect of
its Capital Stock,  merge or consolidate with any other Person and sell,  lease,
transfer or otherwise dispose of its properties or assets.

         5.  Optional  Redemption  by the  Company.  (a) The Company may, at its
option, redeem the Securities (i) at any time and from time to time, in whole or
in part,  on and after October 1, 1999, or (ii) in whole or from time to time in
part,  prior to October 1, 1999 as deemed  necessary by the Board of Trustees of
the Company  for the Company to continue to qualify as a real estate  investment
trust ("REIT")  under  Sections 856 through 860 of the Internal  Revenue Code of
1986, as amended.

                  (b) The  Securities  will  be  immediately  redeemable  by the
Company to the extent, but only to the extent,  deemed necessary by the Board to
prevent the Holder of such  Securities  or any other  person  having an interest
therein  (if the  Securities  were  thereupon  converted)  from being  deemed to
beneficially own,  directly or indirectly,  8.5% or more in value of the Capital
Stock  of the  Company.  For  purposes  of  determining  a  Person's  beneficial
ownership of Capital Stock,

                                       A-4

<PAGE>



the Securities  beneficially  owned by such Person will be deemed  converted and
added to the Capital  Stock  beneficially  owned by such Person for  purposes of
determining  whether such Person beneficially owns in excess of 8.5% in value of
the Capital  Stock.  For  purposes of this  paragraph,  Capital  Stock not owned
directly shall be deemed to be owned  indirectly by a Holder if that Holder or a
group including that Holder would be the beneficial owner of such Capital Stock,
as defined as of May 1, 1995,  in Rule 13d-3  promulgated  by the United  States
Securities and Exchange Commission under the Securities Exchange Act of 1934, as
amended,  and/or would be  considered to own such Capital Stock by reason of the
attribution rules of Section 544 or Section 856(h) of the Code.

                  (c) The redemption price pursuant to the foregoing clauses (a)
and (b) shall be equal to 100% of the principal amount thereof, plus accrued and
unpaid interest to the date fixed for redemption.

                  (d) The  Company  may at any time buy  Securities  on the open
market at prices  which may be  greater or less than the  redemption  prices set
forth herein.

         6. Notice of Redemption.  Notice of redemption  will be mailed at least
30 days but not more than 60 days before the  Redemption  Date to each Holder of
Securities to be redeemed at his registered address. Securities in denominations
larger than $1,000  principal  amount may be redeemed in part, but only in whole
multiples thereof. On and after the Redemption Date interest ceases to accrue on
Securities or portions of them called for redemption.

         7.  Conversion.  A Holder of a Security may convert such  Security into
Common Shares of the Company after  issuance and at any time before the close of
business  on October 1, 2003.  If the  Security  is called for  redemption,  the
Holder may convert it at any time before the close of business on the date fixed
for such redemption.  The initial conversion price is $18.00 per share,  subject
to adjustment in certain events. To determine the number of shares issuable upon
conversion  of a Security,  divide the  principal  amount to be converted by the
conversion  price in effect on the  conversion  date. The Company will deliver a
check for any fractional share.

         To  convert  a  Security,  a  Holder  must  (1)  complete  and sign the
conversion notice on the back of the Security, (2) surrender the Security to the
Conversion Agent, (3) furnish appropriate endorsements and transfer documents if
required  by the  Registrar  or  Conversion  Agent and (4) pay any  transfer  or
similar tax if

                                       A-5

<PAGE>



required.  No payment or  adjustment  is to be made on  conversion  for interest
accrued hereon or for dividends on Common Shares issued on conversion; provided,
however,  that if a Security is surrendered for conversion after the record date
for a payment of interest  and on or before the  interest  payment  date,  then,
notwithstanding  such  conversion,  the  interest  falling due to such  interest
payment date will be paid to the Person in whose name the Security is registered
at the close of business on such record date and any  Security  surrendered  for
conversion  during the period from the close of  business on any regular  record
date to the opening of business on the corresponding  interest payment date must
be  accompanied  by payment of an amount equal to the  interest  payable on such
interest  payment date  (except in the case of  Securities  or portions  thereof
which are called for redemption on October 1, 1999 through and including October
4, 1999,  as to which such  payment in respect of the  October 1, 1999  interest
payment date need not be made).  A Holder may convert a portion of a Security if
the portion is $1,000 principal amount or an integral multiple thereof.

         If the Company is a party to a consolidation or merger or a transfer or
lease of all or substantially all of its assets, the right to convert a Security
into Common  Shares may be changed  into a right to convert it into  securities,
cash or other assets of the Company or another Person.

         8.   Subordination.   THIS  SECURITY  IS  SUBORDINATED  TO  ALL  SENIOR
INDEBTEDNESS  OF THE  COMPANY.  TO THE EXTENT AND IN THE MANNER  PROVIDED IN THE
INDENTURE,  SENIOR  INDEBTEDNESS  MUST BE PAID BEFORE ANY PAYMENT MAY BE MADE TO
ANY HOLDERS OF SECURITIES.  ANY SECURITYHOLDER BY ACCEPTING THIS SECURITY AGREES
TO SUCH SUBORDINATION AND AUTHORIZES THE TRUSTEE TO GIVE IT EFFECT.

         In addition to all other rights of Senior Indebtedness described in the
Indenture,  the Senior Indebtedness shall continue to be Senior Indebtedness and
entitled to the benefits of the  subordination  provisions  irrespective  of any
amendment,  modification or waiver of any term of any instrument relating to the
Senior Indebtedness or extension or renewal of the Senior Indebtedness.

         9. Denominations,  Transfer, Exchange. The Securities are in registered
form without coupons in  denominations  of $1,000  principal amount and integral
multiples thereof. A Holder may register the transfer of or exchange  Securities
in accordance  with the  Indenture.  The  Registrar may require a Holder,  among
other things, to furnish appropriate  endorsements and transfer documents and to
pay any  taxes and fees  required  by law or  permitted  by the  Indenture.  The
Registrar need not register the transfer of or exchange any Securities  selected
for redemption

                                       A-6

<PAGE>



or register the transfer of or exchange any  Securities  for a period of 15 days
before a selection of Securities to be redeemed.

         10. Persons Deemed Owners.  The registered  Holder of a Security may be
treated as its owner for all purposes.

         11.  Unclaimed Money. If money for the payment of principal or interest
on any Securities  remains  unclaimed for two years,  the Trustee and the Paying
Agent will pay the money back to the Company at its written request. After that,
Holders may look only to the Company for payment.

         12.  Discharge  Prior to Redemption or Maturity.  The Indenture will be
discharged and canceled except for certain  sections thereof upon payment of all
the  Securities,  or upon the  irrevocable  deposit with the Trustee of funds or
Government  Obligations  maturing on or before such payment  date or  Redemption
Date, sufficient to pay principal, premium, if any, and interest on such payment
or redemption.

         13. Amendment and Waiver. Subject to certain exceptions, without notice
to the Holders of the Securities, the Indenture or the Securities may be amended
with the consent of the Holders of at least a majority  in  principal  amount of
the Securities then  outstanding and any existing default or compliance with any
provision  may be waived  with the  consent  of the  Holders  of a  majority  in
principal amount of the Securities then  outstanding.  Without the consent of or
notice to any Securityholder,  the Company may amend or supplement the Indenture
or the Securities to, among other things, provide for uncertificated Securities,
to cure any  ambiguity,  defect or  inconsistency  or make any other change that
does not adversely affect the rights of any Securityholder.

         14.  Successors.  When a successor  assumes all the  obligations of its
predecessor  under the  Securities and the Indenture,  the  predecessor  will be
released from those obligations.

         15.  Defaults and Remedies.  If an Event of Default,  as defined in the
Indenture (other than a Event of Default relating to bankruptcy of the Company),
occurs and is continuing,  the Trustee or the Holders of a majority in principal
amount of  Securities  may  declare  all the  Securities  to be due and  payable
immediately in the manner and with the effect  provided in the Indenture.  If an
Event  of  Default  relating  to  bankruptcy  of the  Company  occurs,  then all
Securities  shall become  immediately due and payable without any declaration or
act on the part of the  Trustee or any  Holder.  Holders of  Securities  may not
enforce the Indenture or the Securities except as provided in the

                                       A-7

<PAGE>



Indenture.  The Trustee may require indemnity satisfactory to it, subject to the
provisions  of the TIA,  before it enforces  the  Indenture  or the  Securities.
Subject to certain limitations, Holders of a majority in principal amount of the
Securities then  outstanding may direct the Trustee in its exercise of any trust
or power.  The Trustee may  withhold  from Holders of  Securities  notice of any
continuing  default (except a default in payment of principal or interest) if it
determines  that  withholding  notice  is in their  interests.  The  Company  is
required  to file  periodic  reports  with the  Trustee as to the absence of any
Default or Event of Default.

         16. Trustee Dealings with the Company. Fleet National Bank, the Trustee
under the Indenture, in its individual or any other capacity, may make loans to,
accept  deposits from, and perform  services for the Company or its  Affiliates,
and may  otherwise  deal with the Company or its  Affiliates,  as if it were not
Trustee.

         17. No Personal  Liability.  THE AMENDED AND  RESTATED  DECLARATION  OF
TRUST OF 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.

         18. Authentication.  This Security shall not be valid until the Trustee
signs the certificate of authentication on the other side of this Security.

         19. Status as United States Real Property Holding  Corporation.  To the
best of its  knowledge,  as of the date of the  issuance of this  Security,  the
Company is not a "United States real property holding corporation" as defined in
Section 897(c)(2) of the United States Internal Revenue Code of 1986, as amended
(the "Code").  A non-United States person disposing of this Security may request
from the Company a statement as to whether this  Security  constitutes a "United
States real property  interest" (as defined in Code Section 897(c)(1)) as of the
date of  disposition.  It may be  necessary  to  obtain a  statement  that  this
Security does not constitute a "United States real property  interest"  prior to
the time that a tax return would otherwise be

                                       A-8

<PAGE>



required  to be filed with the  United  States  Internal  Revenue  Service  with
respect  to  such  disposition  in  order  to  avoid a  withholding  tax on such
disposition.  If, at any time while this  Security is  outstanding,  the Company
determines  that it is at such  time a  "United  States  real  property  holding
corporation",  it shall provide notice of such  determination in accordance with
the provisions of Section 13 hereof. The Holder of this Security can contact the
Company at 400 Centre Street, Newton,  Massachusetts 02158 to obtain information
as to the United States income tax  consequences  of the  classification  of the
Company as a "United States real property holding corporation."

         20. CUSIP  Numbers.  Pursuant to a  recommendation  promulgated  by the
Committee on Uniform Security Identification  Procedures, the Company will cause
CUSIP numbers to be printed on the Securities as a convenience to the Holders of
the Securities.  No representation is made as to the accuracy of such numbers as
printed  on  the  Securities  and  reliance  may be  placed  only  on the  other
identification numbers printed hereon.

         21. Accounting Terms. All accounting terms not otherwise defined herein
shall have the meanings  assigned to them in accordance with generally  accepted
accounting principles as applied in the United States.

         22. Descriptive Headings. The descriptive headings appearing herein are
for  convenience  of  reference  only and shall not  alter,  limit or define the
provisions hereof.

         23. Abbreviations. Customary abbreviations may be used in the name of a
Securityholder  or an assignee,  such as: TEN COM (=tenants in common),  TEN ENT
(=tenants by the entireties), JT TEN (=joint tenants with rights of survivorship
and not as tenants in common), CUST (=Custodian), and U/G/M/A (=Uniform Gifts to
Minors Act).

         24.   Limitations  on  certain  Holders.   This  Security  may  not  be
transferred (by sale, transfer,  gift, assignment,  devise or other disposition,
whether  voluntarily or involuntarily,  whether  beneficially or of record,  and
whether effected constructively, by operation of law or otherwise) to any Person
if, as a result of such  transfer,  the Holder hereof or any other Person having
an interest in this Security (other than an Excepted  Person,  as defined in the
Company's Amended and Restated Declaration of Trust, as amended), would, if this
Security were fully converted,  own or be deemed to own, directly or indirectly,
capital  stock of the  Company  representing  8.5% or more in value of the total
capital stock of the Company  outstanding  (determined  in  accordance  with the
provisions  of paragraph  (b) of Section 5 above).  ANY TRANSFER IN VIOLATION OF
THIS SECTION 24 NEED NOT BE RECOGNIZED BY THE COMPANY, THE TRUSTEE OR ANY

                                       A-9

<PAGE>



AGENT (AS DEFINED IN THE  INDENTURE),  AND ANY PERSON WHO,  NOTWITHSTANDING  THE
FOREGOING,  WOULD,  IF THIS SECURITY WERE FULLY  CONVERTED,  OWN OR BE DEEMED TO
OWN, DIRECTLY OR INDIRECTLY,  CAPITAL STOCK OF THE COMPANY  REPRESENTING 8.5% OR
MORE IN VALUE OF THE TOTAL CAPITAL STOCK OF THE COMPANY OUTSTANDING  (DETERMINED
IN ACCORDANCE WITH THE PROVISIONS OF PARAGRAPH (B) OF SECTION 5 ABOVE) SHALL, TO
THE EXTENT OF SUCH EXCESS, NOT BE ENTITLED TO CONVERT THIS SECURITY AS OTHERWISE
PROVIDED HEREIN AND IN THE INDENTURE.

         The Company will furnish to any Securityholder upon written request and
without charge a copy for the  Indenture.  It also will furnish the text of this
Security  in  larger  type.  Requests  may be made  to:  Health  and  Retirement
Properties Trust, 400 Centre Street,  Newton,  Massachusetts  02158.  Attention:
President.

                                      A-10

<PAGE>



                                 TRANSFER NOTICE

If you the Holder wants to assign this Security, fill in the form below and have
your signature guaranteed:

For value received, I or we assign and transfer this Security to

                      (INSERT ASSIGNEE'S SOCIAL SECURITY OR
                           TAX IDENTIFICATION NUMBER)

                 ________________________________________________
                |                                                |
                |                                                |
                |________________________________________________|


 ...............................................................................

 ...............................................................................

 ...............................................................................

 ...............................................................................
              (Print or type assignee's name, address and zip code)

 ..........................................................................agent
to transfer this Security on the books of the Company.  The agent may
substitute another to act for him.


Date:..........................................................................

Your signature:................................................................
               (Sign exactly as your name appears on the other side of
                this Security)

Signature Guarantee*:..........................................................

*Signature must be guaranteed by an eligible  guarantor  institution  within the
meaning of Securities and Exchange  Commission  Rule 17Ad-15  (including  banks,
stock brokers,  savings and loan associations,  national  securities  exchanges,
registered  securities  associations,  clearing agencies and credit unions) with
membership or participation in an approved signature guarantee medallion program
if  this  Security  is to be  delivered  other  than  to and in the  name of the
registered holder.



                                      A-11

<PAGE>



                                CONVERSION NOTICE

To convert this Security into common  shares of  beneficial  interest,  $.01 par
value per share, of the Company, check the box:

                                     _______
                                    |       |
                                    |_______|

To  convert  only  part of this  Security,  state  the  principal  amount  to be
converted (which must be a minimum of $1,000 or any multiple thereof):

                       ____________________________________
                      | $                                  |
                      |____________________________________|

If you want the Security certificate, if any, made out in another person's name,
fill in the form below:

                    (INSERT OTHER PERSON'S SOCIAL SECURITY OR
                           TAX IDENTIFICATION NUMBER)

              ______________________________________________________
             |                                                      |
             |                                                      |
             |______________________________________________________|

 ...............................................................................

 ...............................................................................

 ...............................................................................

 ...............................................................................
              (Print or type assignee's name, address and zip code)

By submitting this  certificate,  you hereby certify to the Company that,  after
giving effect to the conversion  specified herein, you will not own or be deemed
to own,  directly or  indirectly,  shares of beneficial  interest in the Company
which,  together with shares of beneficial  interest issuable upon conversion of
any other  Securities  owned directly or indirectly by you,  represents  8.5% or
more in  value  of the  total  shares  of  beneficial  interest  of the  Company
outstanding  (determined  in accordance  with the provisions of paragraph (b) of
Section 5 of this Security).

_______________________________________________________________________________


                                      A-12

<PAGE>



Date:..........................................................................

Your Signature:................................................................

(Sign exactly as your name appears on the other side of this Security)

Signature Guaranteed By:_______________________________________________________
                                    Note: Signature must be guaranteed
                                          by a member firm of the New York
                                          Stock Exchange or a commercial
                                          bank or trust company.






















                                      A-13






                          SECOND SUPPLEMENTAL INDENTURE
                           Dated as of October 7, 1996

                                       to

                                    INDENTURE

                         Dated as of September 20, 1996

                                     between

                     HEALTH AND RETIREMENT PROPERTIES TRUST

                                       and

                               FLEET NATIONAL BANK

                                   as Trustee


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

                    7.5 % Convertible Subordinated Debentures
                               Due 2003, Series B
                           --------------------------



                                     




<PAGE>




                          SECOND SUPPLEMENTAL INDENTURE



                  SECOND  SUPPLEMENTAL  INDENTURE,  dated as of  October 7, 1996
(this "Supplement"),  between Health and Retirement Properties Trust, a Maryland
real estate investment trust (the "Company"),  and Fleet National Bank, a United
States Bank, as trustee (the "Trustee"), to that certain Indenture,  dated as of
September  20,  1996,  between the Company  and the Trustee  (the  "Indenture"),
supplemented by the First Supplemental Indenture of even date herewith.

                  WHEREAS,  the parties  hereto have entered into the  Indenture
which  provides  for the  issuance  by the Company of the  individual  series of
securities thereunder, upon the Company and Trustee entering into a supplemental
indenture to the Indenture authorizing such series; and

                  WHEREAS,  the  Company  wishes to issue its  second  series of
securities thereunder,  designated its 7.5 % Convertible Subordinated Debentures
Due 2003, Series B (the "Securities"); and

                  WHEREAS,   all  acts  necessary  to  constitute   this  Second
Supplemental  Indenture as a valid,  binding and legal obligation of the Company
have been done and performed.

                  NOW,  THEREFORE,  witnesseth  that,  in  consideration  of the
premises and of the covenants contained herein, it is hereby agreed as follows:

                                    ARTICLE 1

                   DEFINITIONS AND INCORPORATION BY REFERENCE

SECTION 1.1       Definitions.

         Solely for purposes of this Supplement, Section 101 of the Indenture is
hereby amended by inserting, in their appropriate  alphabetical locations,  each
of the following defined terms:

         "Additional  Amounts" shall have the meaning  specified in Section 2 of
the form of Registered  Security and Bearer Security  attached hereto as Exhibit
A.

         "Additional  Closing  Date"  means the date on which the closing of any
exercise of the over-allotment  option contained in the Subscription  Agreement,
as designated by the Company to the Trustee,  but in no event later than 30 days
following the Closing Date.

                                       -1-




<PAGE>



         "Agent" means any Registrar, Paying Agent, Conversion Agent,
Transfer Agent, Authentication Agent co-registrar or agent for
service of notices and demands.

         "Bearer Security" shall have the meaning specified in
Section 2.5(c).

         "Capital Stock" means any and all shares or other equivalents  (however
designated)  of capital  stock,  including  all common  stock and all  preferred
stock, in the case of corporation, or partnership interests or other equivalents
(however designated) in the case of a partnership or common shares of beneficial
interest or other equivalents (however designated) in the case of a trust.

         "Closing  Date" means  October 7, 1996,  at 3:00 p.m.,  London time, or
such other time on the same or such other date, not later than 5:00 p.m., London
time, on the fifth Business Day in London  thereafter,  as the Lead Managers and
the Company may agree.

         "Closing  Price" means with  respect to the shares of Capital  Stock of
the Company on any day, (i) the reported last sale price regular way or, in case
no such  reported  sale takes  place on such day,  the  average of the  reported
closing bid and asked  prices  regular way, in either case on the New York Stock
Exchange,  or (ii) if the shares of Capital  Stock are not listed or admitted to
trading on the New York Stock Exchange, the reported last sale price regular way
or, in case no such  reported  sale takes place on such day,  the average of the
reported  closing  bid and asked  prices  regular  way,  in  either  case on the
principal national  securities exchange on which the shares of Capital Stock are
listed or admitted to trading,  or (iii) if the shares of Capital  Stock are not
listed or admitted to trading on any national securities  exchange,  the average
of the closing bid and asked prices as furnished by any New York Stock  Exchange
member firm selected from time to time by the Company for that purpose.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Common  Depositary" means The Chase Manhattan Bank,  presently located
at  Woolgate  House,  Coleman  Street,  London  EC2P  2HD,  England,  as  common
depositary for Cedel and Euroclear, or its successor common depositary.

         "Common  Shares"  means  the  Company's  common  shares  of  beneficial
interest,  par  value  $0.01  per  common  share,  or  as  such  shares  may  be
reconstituted from time to time.

         "Default"  means any event which is, or after notice or passage of time
or both would be, an Event of Default.


                                       -2-




<PAGE>



         "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

         "Exchange Date" shall have the meaning specified in Section
2.8(d).

         "Holder"  or  "Securityholder"  means,  with  respect  to a  Registered
Security,  the person in whose name a Registered  Security is  registered on the
Registrar's  books and,  with respect to a Bearer  Security,  the bearer of such
Bearer Security and, with respect to a coupon, the bearer thereof.

         "Indebtedness" as applied to any Person,  means,  without  duplication:
(a) all liabilities and obligations, contingent or otherwise, of such Person (i)
in respect of borrowed  money  whether or not  evidenced by a  promissory  note,
draft or similar instrument (whether or not the recourse of the lender is to the
whole of the assets of such Person or only to a portion thereof); (ii) evidenced
by bonds, notes, debentures or similar instruments;  (iii) evidenced by a letter
of credit or reimbursement  obligation of such Person with respect to any letter
of credit; (iv) evidenced by bankers'  acceptances or similar instruments issued
or accepted by banks;  (v) for the payment of money relating to obligations with
respect to any lease that is properly  classified  as a  liability  on a balance
sheet in accordance  with generally  accepted  accounting  principles;  and (vi)
representing the balance deferred and unpaid for all or any part of the purchase
price of property or services  (except any such balance that  constitutes  (a) a
trade payable or an accrued liability arising in the ordinary course of business
or (b) a trade draft or note payable  issued in the ordinary  course of business
in connection  with the purchase of goods or services);  (b) all net obligations
of such Person under Interest Swap and Hedging Obligations;  (c) all liabilities
of others  described in the preceding  clauses (a) and (b) which such Person has
guaranteed or for which it is otherwise  liable and all obligations to purchase,
redeem or acquire any Capital Stock; and (d) any and all deferrals,  amendments,
renewals, extensions, supplements, refinancings or refundings (whether direct or
indirect) of any  liability  or  obligations  described in any of the  preceding
clauses (a), (b) or (c), or this clause (d), whether or not between or among the
same parties.

         "Interest Payment Date" means the stated due date of an
installment of interest on the Securities.

         "Interest  Record Date" means an Interest  Record Date specified in the
Securities whether or not such Interest Record Date is a Business Day.

         "Interest Swap and Hedging Obligation" means any obligation
of any person pursuant to any interest rate swap agreement,

                                       -3-




<PAGE>



interest  rate cap  agreement,  interest  rate collar  agreement,  interest rate
exchange  agreement,  currency  exchange  agreement  or any other  agreement  or
arrangement  designed  to protect  against  fluctuations  in  interest  rates or
currency  values,  including,   without  limitation,  any  arrangement  whereby,
directly or  indirectly,  such  person is entitled to receive  from time to time
periodic  payments  calculated  by applying  either a fixed or floating  rate of
interest on a stated notional  amount in exchange for periodic  payments made by
such person  calculated  by applying a fixed or floating rate of interest on the
same notional amount.

         "Junior  Securities"  of any  person  means any  Capital  Stock and any
Indebtedness of such Person that is (i)  subordinated in right of payment to the
Securities  and has no scheduled  installment  of principal  due, by redemption,
sinking fund  payment or  otherwise,  on or prior to the Stated  Maturity of the
Securities and (ii) subordinated in right of payment to all Senior  Indebtedness
at least to the same extent as the Securities.

         "Lead Managers" means NatWest Securities Limited and Merrill
Lynch International.

         "Officer" means the President, the Chief Operating Officer,
any Vice President, the Treasurer, the Chief Financial Officer,
any Assistant Treasurer, the Secretary or any Assistant Secretary
of the Company.

         "Principal Corporate Trust Office" means One Federal Street,
Boston, Massachusetts (or such other office as the Trustee may
designate as such).

         "Registered Security" shall have the meaning specified in
Section 2.5(c).

         "Regulation S" means  Regulation S promulgated by the Commission  under
the Securities Act.

         "Regulation  S Global  Security"  shall have the meaning  specified  in
Section 2.5(c).

         "Securities Act" means the Securities Act of 1933, as amended from time
to time.

         "Securities" means the securities in the form of Exhibit A
or Exhibit B hereto.

         "Senior Indebtedness" means the principal,  premium, if any, and unpaid
interest  (including interest accruing on or after the filing of any petition in
bankruptcy or for reorganization  relating to the Company whether or not a claim
for  post-filing  interest  is  allowed  in  such  proceeding),  fees,  charges,
expenses,

                                       -4-




<PAGE>



reimbursement  and  indemnification  obligations,  and all other amounts payable
under or in respect of (i) any  Indebtedness of the Company and (ii) any and all
deferrals, renewals, extensions,  refundings and refinancings (whether direct or
indirect) of any such Indebtedness,  whether any such Indebtedness  exists as of
the date of this Indenture or shall hereafter be created,  incurred,  assumed or
guaranteed;  provided,  however,  that Senior Indebtedness shall not include (A)
the  Securities,  (B) the  Series A  Debentures  or the  7.25%  Debentures,  (C)
Indebtedness  of the  Company  owed or owing  to a  Subsidiary  or any  officer,
director, trustee or employee of the Company or any Subsidiary, (D) Indebtedness
of the  Company  which,  pursuant  to the terms of the  instrument  creating  or
evidencing such  Indebtedness,  is expressly made pari passu with or subordinate
in right of payment to the  Securities  or (E) any  liability  for taxes owed or
owing to the Company.

         "Series A Debentures" means the Company's 7.5% Convertible Subordinated
Debentures Due 2003,  Series A, in the aggregate  principal amount of up to U.S.
$80,500,000,  issued  pursuant to a First  Supplemental  Indenture,  dated as of
October 7, 1996, between the Company and the Trustee.

         "7.25%  Debentures" means the Company's 7.25% Convertible  Subordinated
Debentures Due 2001 in the aggregate principal amount of up to U.S. $40,000,000,
issued pursuant to a Third Supplemental Indenture,  dated as of October 7, 1996,
between the Company and the Trustee.

         "Subscription  Agreement"  means that certain  Subscription  Agreement,
dated October 2, 1996, by and between the Company and the several managers named
in  Schedule 1 thereto  (the  "Managers"),  as such  agreement  may be  amended,
modified or supplemented from time to time in accordance with the terms thereof.

         "Trust  Officer",  when  used with  respect  to the  Trustee,  means an
officer of the Trustee  customarily  performing  functions  in  corporate  trust
matters or any other  officer of the  Trustee  to whom such  matter is  referred
because of his knowledge of and familiarity with the particular subject.

SECTION 1.2       Incorporation by Reference to Trust Indenture Act.

         Solely for purposes of this Supplement, Article One of the Indenture is
hereby amended to add thereto the following:

         SECTION  114.  Incorporation  by  Reference  to  Trust  Indenture  Act.
Whenever  this  Indenture  refers to a provision  of the TIA,  the  provision is
incorporated  by reference in and made a part of this  Indenture.  The following
TIA terms used in this Indenture have the following meanings:

                                       -5-




<PAGE>



         "Commission" means the Securities and Exchange Commission.

         "indenture securities" means the Securities.

         "indenture security holder" means a Securityholder.

         "indenture to be qualified" means this Indenture.

         "indenture trustee" or "institutional trustee" means the
         Trustee.

         "obligor" on the indenture securities means the Company or
         any other obligor on the indenture securities.

         All other  terms used in this  Indenture  that are  defined by the TIA,
defined by TIA reference to another statute or defined by Commission  rules have
the meanings assigned to them therein.

                                    ARTICLE 2

                                 THE SECURITIES

SECTION 2.1       Form; Dating; Incorporation of Form in Indenture.

         In accordance  with Sections 201 and 301 of the Indenture,  there shall
be and is hereby  authorized a single series of Securities  designated the "7.5%
Convertible  Subordinated  Debentures  Due 2003,  Series B" limited in aggregate
principal  amount to  $149,500,000,  except  for  Securities  authenticated  and
delivered upon  registration  of transfer of, or in exchange for, or in lieu of,
other Securities pursuant to Sections 9.5 or 10.1 hereof or pursuant to Sections
304, 305, 306 or 1107 of the Indenture.

         Their  fixed  maturity  shall be October  1, 2003,  and they shall bear
interest at the rate per annum of 7.5%,  from and including the date of issuance
thereof until maturity or earlier  redemption,  payable  semiannually on April 1
and October 1 commencing April 1, 1997,  until the principal  thereof is paid or
made available for payment.

         The Securities shall be redeemable as provided in Article 3.

         The  Securities  shall be  subordinated  in right of  payment to Senior
Indebtedness, to the extent provided in Article 11 hereof.

         The Securities shall be convertible as provided in Article 10 hereof.

         The Securities and the Trustee's certificate of authentication shall be
substantially in the form of Exhibits A and B which are incorporated in and made
part of this Supplement.

                                       -6-




<PAGE>



The  Securities may have  notations,  legends or  endorsements  required by law,
stock exchange rules,  agreements to which the Company is subject, or usage. The
Company shall  approve the form of the  Securities  and any notation,  legend or
endorsement   on  them.   Each   Security   shall  be  dated  the  date  of  its
authentication, except that Bearer Securities shall be dated October 7, 1996.

         The terms and provisions  contained in the Securities shall constitute,
and are  hereby  expressly  made,  a part of this  Supplement  and to the extent
applicable, the Company and the Trustee, by their execution and delivery of this
Supplement,  expressly  agree  to such  terms  and  provisions  and to be  bound
thereby.  The Securities shall be issuable in registered form,  without coupons,
and in bearer form, with interest coupons attached.

SECTION 2.2       Registrar and Agents.

         The Company shall maintain an office or agency where  Securities may be
presented  for  registration  of  transfer  or for  exchange  ("Registrar"),  an
additional transfer agency or transfer agencies ("Transfer Agent"), an office or
agency where the Securities may be presented for payment  ("Paying  Agent"),  an
office or agency where  Securities may be presented for conversion  ("Conversion
Agent") and an office or agency where notices and demands to or upon the Company
in respect of the  Securities and this  Supplement may be served.  The Registrar
shall keep a register of the Securities  (the "Security  Register") and of their
transfer and exchange.  The Company may have one or more co- registrars,  one or
more  Transfer  Agents,  one or more  additional  Paying  Agents and one or more
additional  Conversion  Agents.  The Company or any Subsidiary may act as Paying
Agent,  Transfer Agent and/or Conversion Agent. The term "Paying Agent" includes
any  additional  paying  agent,  the term  "Transfer  Agent"  shall  include any
additional   transfer  agent  and  the  term  "Conversion  Agent"  includes  any
additional conversion agent.

         The Company may change any Paying  Agent,  Transfer  Agent,  Registrar,
Conversion Agent or Co-Registrar on sixty (60) days' prior written notice to the
Trustee (or such lesser time to which the Trustee may consent in  writing).  The
Company  shall notify the Trustee in writing of the name and address of any such
Agent.  If the Company fails to maintain a Registrar,  Paying Agent,  Conversion
Agent  or  agent  for  service  of  notices  and  demands,  or fails to give the
foregoing notice, the Trustee shall act as such.

         The Company initially  appoints the Trustee at its Principal  Corporate
Trust  Office as Paying  Agent  (for  Registered,  but not  Bearer  Securities),
Transfer Agent,  Conversion  Agent and agent for service of notices and demands.
The Company further hereby

                                       -7-




<PAGE>



appoints (i) The Chase Manhattan  Bank,  London,  presently  located at Woolgate
House, Coleman Street,  London EC2P 2HD, England (or such other office in London
designated  for the purpose by said  institution),  as the  Registrar  and as an
additional  Paying Agent,  Transfer Agent and Conversion  Agent,  and (ii) Chase
Manhattan Bank  Luxembourg  S.A.,  presently  located at 5, rue Plaetis  L-2338,
Luxembourg  (or such other office in  Luxembourg  designated  for the purpose by
said institution),  as an additional Paying Agent, Transfer Agent and Conversion
Agent in  respect of the  Securities  upon the terms and  conditions  herein set
forth.  The Company  shall  maintain  Agents with respect to the  Securities  as
provided in Section 1002 of the Indenture.

SECTION 2.3       Paying Agent to Hold Money in Trust.

         On  or  before  3:00  p.m.   (Luxembourg  time)  on  the  Business  Day
immediately  preceding  each due date of the principal  of,  premium if any, and
interest on any  Securities,  the Company  shall  deposit  with the Paying Agent
located in Luxembourg a sum sufficient to pay such principal,  premium,  if any,
and interest so becoming  due. The Company shall require each Paying Agent other
than the Trustee to agree in writing  that it will hold in trust for the benefit
of Holders of the  Securities  or the Trustee all money held by the Paying Agent
for the payment of principal of,  premium if any, or interest on the  Securities
and to notify the Trustee of any default by the Company (or any other obligor on
the Securities) in making any such payment.  If the Company or a Subsidiary acts
as  Paying  Agent,  it shall on or  before  each due date of the  principal  of,
premium,  if any, or interest on any Securities  segregate the money and hold it
as a separate  trust fund. The Company at any time may require a Paying Agent to
pay all money held by it to the  Trustee  and the Trustee may at any time during
the continuance of any payment default,  upon written request to a Paying Agent,
require such Paying  Agent to  forthwith  pay to the Trustee all sums so held in
trust by such Paying  Agent.  Upon doing so, the Paying Agent (if other than the
Company or a Subsidiary thereof) shall have no further liability for the money.

SECTION 2.4       Outstanding Securities.

         Securities  outstanding  at any  time  are all  Securities  theretofore
authenticated  and  delivered  under  this  Supplement  except:  (a)  Securities
theretofore   canceled  by  the  Trustee  or   delivered   to  the  Trustee  for
cancellation;  and (b)  Securities  in  exchange  for or in lieu of which  other
Securities have been  authenticated  and delivered  pursuant to this Supplement,
other than any Securities in respect of which there shall have been presented to
the Trustee proof  satisfactory  to it that such  Securities  are held by a bona
fide  purchaser  in whose hands such  Securities  are valid  obligations  of the
Issuer;  provided,  that  in  determining  whether  the  Securityholders  of the
requisite

                                       -8-




<PAGE>



principal  amount  of  outstanding  Securities  are  present  at  a  meeting  of
Securityholders  for quorum  purposes or have voted or taken or concurred in any
action  under this  Supplement,  including  the making of any  request,  demand,
authorization,  direction, notice, consent or waiver hereunder, Securities owned
by the Company or any other obligor upon the  Securities or any Affiliate of the
Company or such other obligor shall be disregarded  and deemed not  outstanding,
except that,  in  determining  whether the Trustee shall be protected in relying
upon any such  determination  as to the  presence  of a quorum  or upon any such
request,  demand,  authorization,  direction,  notice,  consent or waiver,  only
Securities  which a Trust Officer of the Trustee  actually  knows to be so owned
shall be disregarded.

         If a Security is replaced pursuant to Section 306 of the Indenture,  it
ceases to be outstanding  until the Trustee  receives proof  satisfactory  to it
that the replaced Security is held by a bona fide purchaser.

         If the Paying Agent (other than the Company or a Subsidiary) holds on a
Redemption  Date or maturity date money deposited with it by or on behalf of the
Company  sufficient  to pay the  principal  of,  premium,  if any,  and  accrued
interest on  Securities  payable on that date,  then on and after that date such
Securities cease to be outstanding and interest on them ceases to accrue.

         A Security does not cease to be  outstanding  because the Company or an
Affiliate holds the Security.

SECTION 2.5       Issuance.

                  (a)      The Company has, by the Subscription Agreement,
agreed to issue and sell to the several Managers up to U.S. $149,500,000
aggregate principal amount of its 7.5% Convertible Subordinated Debentures
due 2003, Series B.

                  (b)      Pursuant to the Subscription Agreement, the Manager
may resell the Securities to (i) persons who are not "U.S. Persons" (as such
term is defined in Regulation S) in transactions that meet the requirements
of Regulation S.

                  (c) The  Securities  will initially be issued in the form of a
temporary global  debenture in bearer form without coupons or conversion  rights
in  the   aggregate   principal   amount  of  the  entire  issue  of  Securities
substantially  in the  form of  Exhibit  B  hereto  (the  "Regulation  S  Global
Security").  As  hereinafter  provided,  the  Regulation  S Global  Security may
subsequently  be exchanged for Securities in printed  definitive  form either as
(i) bearer Securities ("Bearer  Securities") in denominations of U.S. $1,000 and
U.S.  $10,000 and with  interest  coupons  attached  thereto,  representing  the
semi-annual  interest  payable  thereon,  or (ii)  fully  registered  Securities
("Registered

                                       -9-




<PAGE>



Securities") in  denominations  of U.S. $1,000 and integral  multiples  thereof,
without  interest  coupons  attached   thereto.   Bearer   Securities  shall  be
substantially  in the form of Exhibit A hereto,  including the coupons set forth
therein but  excluding  the  information  appearing  therein that relates to the
Registered  Securities only. Registered Securities shall be substantially in the
form of Exhibit A hereto.

                  (d) Reserved.

                  (e) Reserved.

                  (f) Reserved.

                  (g) The Registered  Securities,  the Bearer Securities and the
Regulation  S  Global  Security  shall  contain  such  appropriate   insertions,
omissions,  substitutions  and other  variations as are required or permitted by
the Indenture and this  Supplement  and may have such letters,  numbers or other
marks of identification and such legends or endorsements  placed thereon as may,
consistent herewith,  be determined by the officer of the Company executing such
Securities, as evidenced by his execution of such Securities.

                  (h) The Company in issuing the Registered Securities shall use
CUSIP  numbers,  and the  Trustee  may use such  CUSIP  numbers in any notice of
redemption with respect to the Securities. In addition, the Company shall obtain
an ISIN number and a Common Code for the Bearer  Securities  and the  Registered
Securities.

                  (i) In compliance with United States tax laws and regulations,
Bearer  Securities may not be offered or sold during the 40-day period beginning
on the Closing Date (or, if later, any Additional  Closing Date), or at any time
if part of a Manager's  unsold  allotment,  to a person who is within the United
States or to a United  States  person other than (a) foreign  branches of United
States financial  institutions if such  institutions  agree in writing to comply
with the requirements of Section  165(j)(3)(A),(B),  or (C) of the Code, and the
regulations thereunder, (b) United States offices of exempt distributors, or (c)
United States offices of  international  organizations or foreign central banks.
United States tax laws and regulations  also require that Bearer  Securities not
be delivered within the United States.

SECTION 2.6       Securityholder Lists.

         The  Trustee  shall  preserve  in as  current  a form as is  reasonably
practicable  the most recent list  available to it of the names and addresses of
Holders of  Registered  Securities.  If the  Trustee is not the  Registrar,  the
Registrar shall furnish to

                                      -10-




<PAGE>



the  Trustee on or before the  Interest  Record  Date  preceding  each  Interest
Payment  Date and at such times as the  Trustee may request in writing a list in
such form and as of such date as the Trustee reasonably may require of the names
and addresses of Holders of Registered Securities.

SECTION 2.7       Transfer and Exchange; Restrictions on Transfer.

         Solely for purposes of this  Supplement,  Section 305 of the  Indenture
(other than the first paragraph thereof) is hereby amended to read as follows:

                  (a)  Upon  surrender  for  registration  of  transfer  of  any
Registered  Security at any office or agency  designated for such purpose by the
Company  pursuant to Section 2.2 hereof,  the  Company  shall  execute,  and the
Trustee or an Authenticating Agent shall authenticate,  register and deliver, in
the name of the designated transferee or transferees, one or more new Registered
Securities of any authorized  denominations  and of a like  aggregate  principal
amount.

                  (b)  Reserved.

                  (c)  Bearer  Securities  may,  at the  option  of  the  holder
thereof,  be exchanged  for an equal  aggregate  principal  amount of Registered
Securities in  denominations  of $1,000 and integral  multiples  thereof without
coupons and/or Bearer Securities of authorized denominations,  upon surrender of
the Bearer Securities to be exchanged at any office or agency outside the United
States  designated  for such  purpose by the  Company  pursuant  to Section  2.2
hereof,  with all unmatured  coupons and all matured  coupons in default thereto
appertaining.  If such Holder is unable to produce any such unmatured  coupon or
coupons or matured  coupon or coupons in default,  such exchange may be effected
if the Bearer  Securities are accompanied by payment in funds  acceptable to the
Company in an amount equal to the face amount of such missing  coupon or coupons
or the surrender of such missing  coupon or coupons may be waived by the Company
if there be furnished to it and the Trustee or a Paying  Agent,  as the case may
be, such  security or indemnity  as it may require to save it, the Trustee,  the
Paying Agent and any paying agency  harmless.  If thereafter  the Holder of such
Security shall surrender to any paying agency any such missing coupon or coupons
in respect of which such a payment  shall have been made,  such Holder  shall be
entitled  to receive  the amount of such  payment  from the  Company;  provided,
however,  that, except as otherwise  provided in the form of Bearer Security set
forth in Exhibit A hereto, interest represented by coupons shall be payable only
upon  presentation  and surrender of those coupons outside of the United States,
its  territories  and  its  possessions.   Bearer  Securities  and  coupons  are
transferable upon delivery.


                                                      -11-




<PAGE>



                  (d)  Registered  Securities  may,  at the option of the holder
thereof,  be  exchanged  for  Registered  Securities  of  any  other  authorized
denominations and of a like aggregate  principal  amount,  upon surrender of the
Registered  Securities  to be exchanged at any office or agency  designated  for
such  purpose by the  Company  pursuant  to the  Indenture  or this  Supplement.
Registered Securities shall not be exchangeable for Bearer Securities.  Whenever
any Registered  Securities are so  surrendered  for exchange,  the Company shall
execute,  and the  Trustee or an  Authenticating  Agent shall  authenticate  and
deliver,  the  Registered  Securities  which the holder  making the  exchange is
entitled to receive.

                  (e) Reserved.

                  (f) Reserved.

                  (g) Reserved.

                  (h) Reserved.

                  (i) Reserved.

                  (j) Reserved.

                  (k) Reserved.

                  (l) All Securities issued upon any registration of transfer or
exchange of Securities shall be the valid obligations of the Company, evidencing
the same obligations,  and entitled to the same benefits under the Indenture and
this  Supplement,  as the  Securities  surrendered  upon  such  registration  of
transfer or exchange.

                  (m) Every  Registered  Security  presented for registration of
transfer or surrendered  for exchange shall be duly endorsed,  or be accompanied
by a written  instrument of transfer in form satisfactory to the Company and the
Trustee  or  the  Transfer   Agent  to  which  such  Security  is  presented  or
surrendered, duly executed by the Holder thereof or his attorney duly authorized
in writing. All such instruments shall comply with the applicable  provisions of
this Section 2.7. The  registration of the transfer of a Registered  Security by
the Registrar shall be deemed to be the written  acknowledgment of such transfer
on behalf of the Company.

                  (n) No service  charge shall be made for any  registration  of
transfer or exchange,  but the Company or the Transfer Agent may require payment
of a sum  sufficient to cover any tax or other  governmental  charge that may be
imposed in connection with any registration of transfer or exchange of

                                      -12-




<PAGE>



Securities, other than exchanges pursuant to Section 2.5 hereof or not involving
any registration of transfer.

                  (o)  Neither  the  Company  nor  the  Trustee  nor  any of the
Transfer  Agent  shall  be  required  (i)  to  exchange  Bearer  Securities  for
Registered  Securities  during the period  between  the close of business on any
Interest Record Date and the opening of business on the next succeeding Interest
Payment Date,  (ii) to exchange any Bearer  Security (or portion  thereof) for a
Registered  Security if the Company  shall  determine and inform the Trustee and
the Transfer Agents in writing that, as a result thereof,  the Company may incur
adverse   consequences  under  the  federal  income  tax  laws  and  regulations
(including  proposed  regulations) of the United States in effect or proposed at
the time of such exchange, or (iii) in the event of a redemption in part, (A) to
register the transfer or exchange of  Registered  Securities  or to exchange any
Bearer  Securities  for  Registered  Securities  during  a  period  of  15  days
immediately  preceding  the date notice is given  pursuant to Section 3.1 hereof
and  Section  3(e)  of the  Registered  Securities  and  the  Bearer  Securities
identifying  the serial  numbers of any  Securities  to be  redeemed,  or (B) to
register  the  transfer or exchange of any  Registered  Security so selected for
redemption in whole or in part, except portions not being redeemed of Securities
being  redeemed  in part,  or (C) to  exchange  any Bearer  Security  called for
redemption;  provided, however, that a Bearer Security called for redemption may
be  exchanged,  on the terms and  conditions  set forth above,  for a Registered
Security  that is  simultaneously  surrendered,  with  written  instruction  for
payment on the Redemption Date,  unless the Redemption Date is between the close
of  business on any  Interest  Record Date and the close of business on the next
succeeding  Interest  Payment Date, in which case such exchange may only be made
prior to the Interest Record Date immediately preceding the Redemption Date.

SECTION 2.8       Exchange of Global Security.

         Solely for purposes of this Supplement, Section 304(b) of the Indenture
(other than the first paragraph thereof) is hereby amended to read as follows:

                  (a)  Reserved.

                  (b) The  Regulation  S Global  Security  will be  issued  upon
payment to the Company or its order in United States dollars by wire transfer to
a United States dollar account  designated by the Company,  at 3:00 p.m., London
time,  on the "Closing  Date." Such payment will be made (1) upon  authorization
from the Lead Managers,  and (2) against the delivery of the Regulation S Global
Security for the  Securities to the Common  Depositary.  The Regulation S Global
Security shall be held on deposit with the Common Depositary for the accounts of
Euroclear and Cedel, for

                                      -13-




<PAGE>



credit to the Managers' Securities Clearance Accounts (or to such other accounts
as the Managers may have specified) with Euroclear or Cedel.

                  (c) Reserved.

                  (d) On or before the Exchange  Date,  the Company will execute
and  deliver to The Chase  Manhattan  Bank,  London,  as  Authenticating  Agent,
definitive   Registered  Securities  and  Bearer  Securities  in  the  aggregate
principal  amount  outstanding in the  Regulation S Global  Security and in such
proportion of Registered  Securities to Bearer Securities as such Authenticating
Agent may specify.  "Exchange  Date" means the date  following the expiration of
the 40-day  period  commencing  on the Closing Date or, if later,  an Additional
Closing Date. On or after the Exchange Date,  the  Regulation S Global  Security
may be surrendered to the Registrar to be exchanged,  as a whole or in part, for
definitive   Bearer   Securities   without   charge,   and  the  Trustee  or  an
Authenticating  Agent shall  authenticate  and  deliver,  in  exchange  for such
Regulation S Global Security or the portions  thereof to be exchanged,  an equal
aggregate  principal  amount  of  definitive  Bearer  Securities,  but only upon
presentation  to the  Registrar  of a  certificate  of  Euroclear  or Cedel with
respect to the Regulation S Global Security or portions thereof being exchanged,
to the effect that it has received a certificate or certificates satisfactory to
it with  respect to  Non-U.S.  Person  beneficial  ownership  on the part of the
Holders of the Securities  accepted for clearance through Euroclear or Cedel, as
appropriate, dated no earlier than 15 days prior to the Exchange Date and signed
by the person  appearing in its records as the owner of the  Regulation S Global
Security  or  portions  thereof  being  exchanged.  Similarly,  on or after  the
Exchange Date, portions of the Regulation S Global Security may be exchanged for
an equal aggregate  principal  amount of definitive  Registered  Securities upon
presentation  to the Registrar of a request for such exchange  accompanied  by a
certification of Non-U.S. beneficial ownership.

                  (e) Reserved.

                  (f) Bearer  Securities and  Registered  Securities may only be
issued in exchange for interests in the temporary  Regulation S Global  Security
upon receipt of certification in the form of Exhibit A-2 to the Indenture.

                  (g) The delivery to the Registrar by Euroclear or Cedel of any
certificate referred to in paragraph (f) above may be relied upon by the Company
and the Registrar as conclusive  evidence that a  corresponding  certificate  or
certificates  in the  form of  Exhibit  A-1 to the  Indenture  has or have  been
delivered to Euroclear or Cedel pursuant to the terms of this Supplement and the
Indenture.


                                      -14-




<PAGE>



                  (h) Upon any such  exchange of a portion of the  Regulation  S
Global  Security for a definitive  Bearer Security or Securities or a definitive
Registered  Security or Securities,  the  Regulation S Global  Security shall be
endorsed by the Trustee or its agent to reflect the  reduction of its  principal
amount by an amount equal to the aggregate  principal  amount of such definitive
Security or  Securities;  and the Trustee  hereby  appoints the Registrar as its
agent for such purpose.  Until so exchanged in full for  definitive  Securities,
the  Regulation S Global  Security shall in all respects be entitled to the same
benefits  under the  Indenture  and this  Supplement  as  definitive  Securities
authenticated  and delivered  hereunder,  except that neither the Holder thereof
nor the beneficial  owners of the Regulation S Global Security shall be entitled
to receive  payment of  interest  thereon or  exercise  conversion  rights  with
respect thereto.

SECTION 2.9       Payment.

         Solely for purposes of this Supplement, Section 307 of the Indenture is
hereby amended to read as follows:

                  (a) The  Company  will pay or  cause to be paid to the  Paying
Agent the amounts,  at the times and for the  purposes,  set forth herein and in
the text of the  Securities,  and the Company hereby  authorizes and directs the
Paying Agent to make payment of the principal of, premium,  if any, and interest
on and Additional Amounts, if any, on the Securities from such payments.

                  (b) At least 15 days prior to the date on which any payment of
Additional  Amounts  shall be required  to be made  pursuant to Section 2 of the
Securities,  the Company  will  furnish each Paying Agent and the Trustee with a
certificate of one of its duly authorized officers instructing each Paying Agent
as to the amounts  required  (i) to be deducted or withheld for or on account of
any taxes  described in Section 2 of the Securities from a payment to be made on
that  date  and (ii) to be paid to each  holder  of  Securities  or  coupons  as
Additional Amounts pursuant to that paragraph.  If the foregoing amounts are not
uniform for all Holders, then the Company's certificate shall specify by country
of residence or other factor the amounts required to be deducted or withheld and
to be paid as  Additional  Amounts  for each  Holder or class of  Holders of the
Securities  or coupons.  In the  absence of its receipt of any such  certificate
from the  Company,  each Paying  Agent may make  payment  without  deduction  or
withholding.  The Company  hereby agrees to indemnify  each Paying Agent and the
Trustee for, and to hold them harmless against,  any loss,  liability or expense
reasonably  incurred  without  negligence  or willful  misconduct on their part,
arising out of or in connection  with actions taken or omitted by any of them in
reliance on any certificate furnished pursuant to this Section.


                                      -15-




<PAGE>



                  (c) Interest on any Registered  Security that is payable,  and
is punctually  paid or duly provided for, on any Interest  Payment Date shall be
paid to the person in whose name that  Security  is  registered  at the close of
business  on the  Interest  Record  Date  even if such  Registered  Security  is
canceled after such Interest Record Date.

                  (d) If a Registered  Security is converted  after the close of
business  on an  Interest  Record Date and before the opening of business on the
next succeeding Interest Payment Date, the interest due on such Interest Payment
Date  shall be paid on such  Interest  Payment  Date to the person in whose name
that Security is  registered  at the close of business on that  Interest  Record
Date.

SECTION 2.10      Computation of Interest.

                  Interest on the Securities shall be computed on the basis of a
360-day year of twelve 30-day months.

SECTION 2.11      Appointment of Authenticating Agents.

                  Pursuant to Section 611 of the  Indenture,  the Trustee hereby
appoints  each of (i) the  London  office of Fleet  National  Bank  (Fleet  Bank
London),  presently  located at 40-41 St. Andrews Hill, London EC4V 5DE, England
(or  such  other  office  in  London   designated   for  such  purpose  by  said
institution),  and (ii) The Chase Manhattan Bank,  London,  presently located at
Woolgate House,  Coleman Street,  London EC2P 4HD, England (or such other office
in London  designated for such purpose by said  institution),  as Authenticating
Agents with respect to the Securities.  The Company and the Trustee hereby waive
the requirement set forth in the second sentence of Section 611 of the Indenture
with  respect  to the  execution  and  delivery  of an  instrument  signed  by a
Responsible Officer of the Trustee.


                                    ARTICLE 3
                                   REDEMPTION

SECTION 3.1       Right of Redemption.

         Solely  for  the  purposes  of  this  Supplement,  Section  1104 of the
Indenture is hereby amended as follows:

         If, under the  circumstances  described in Section 3 of the  Registered
Securities  and Bearer  Securities,  the  Company  shall elect or be required to
redeem the outstanding Securities, the
following provisions shall be applicable:

                  (a)      Reserved.


                                      -16-




<PAGE>



                  (b) In case the  Company  shall give  notice to the Trustee of
its election to redeem the Securities pursuant to Section 1102 of the Indenture,
the  Trustee  shall cause to be given to Holders on behalf of and at the expense
of the Company a notice of  redemption  in  accordance  with Section 1104 of the
Indenture.  The Trustee  shall send a copy of such notice of  redemption  to the
Company and each Paying Agent (if different from the Trustee).  In the case of a
redemption in whole, notice will be given once not more than 60 nor less than 30
days prior to the Redemption Date. In the case of a partial  redemption,  notice
will be given twice, the first such notice to be given not more than 60 nor less
than 45 days prior to the Redemption Date and the second such notice to be given
not more than 45 and not less than 30 days  prior to the  Redemption  Date.  The
Trustee  shall  notify the  Company  promptly  of the  portions  of  outstanding
Securities to be called for redemption as determined pursuant to Section 3(a) of
the Registered Securities and Bearer Securities.

                  (c) Reserved.

                  (d) Notices  relating to the  redemption of  Securities  shall
specify:  the  Redemption  Date; the  Redemption  Price;  the place or places of
payment;  that  payment  will be made upon  presentation  and  surrender  of the
Securities to be redeemed,  together, in the case of a Bearer Security, with all
appurtenant  coupons,  if any, maturing  subsequent to the Redemption Date; that
interest  accrued  to the  Redemption  Date  will be paid as  specified  in such
notice;  that on and after said date interest thereon will cease to accrue; that
the Holder will have the right to convert  such  Holder's  Securities  until the
close of  business on the fifth day (or if such day is not a Business  Day,  the
next  succeeding  Business Day) preceding the related  Redemption Date or Holder
Redemption  Date, as the case may be; and such other  information as the Company
may wish to include.  In the case of a  redemption  in part at the option of the
Company,  notices shall specify the aggregate  principal amount of Securities to
be redeemed and the aggregate  principal amount of Securities  outstanding after
such partial  redemption.  The first notice shall specify the last date on which
exchanges or transfers of  Securities  may be made (in  accordance  with Section
2.6(o)  hereof),  and the second notice shall specify the serial  numbers of the
Securities  and the portions  thereof  called for  redemption.  In the case of a
redemption  in whole or in part by the Company,  notices  shall specify the date
the  conversion  privilege  expires  in  accordance  with  Section  4(a)  of the
Registered Securities and Bearer Securities.  Such notices shall also state that
the conditions precedent, if any, to such redemption have occurred.


                                      -17-




<PAGE>



SECTION 3.2       Effect of Notice of Redemption.

                  Once notice of redemption is given in accordance  with Section
3.1  hereof,  Securities  called for  redemption  become due and  payable on the
Redemption  Date and at the  Redemption  Price,  including  accrued  and  unpaid
interest and Additional  Amounts, if any, to the Redemption Date. Upon surrender
to the Trustee or Paying Agent,  such Securities  called for redemption shall be
paid  at the  Redemption  Price,  including  accrued  and  unpaid  interest  and
Additional  Amounts,  if  any,  to the  Redemption  Date;  provided  that if the
Redemption  Date is after a regular  Interest Record Date and on or prior to the
corresponding Interest Payment Date, the accrued interest to the Redemption Date
and Additional  Amounts,  if any, shall be payable on the Redemption Date to the
Holder of the redeemed  Securities  registered on the relevant  Interest  Record
Date; and provided,  further,  that if a Redemption  Date is not a Business Day,
payment  shall be made on the next  succeeding  Business  Day and no interest or
Additional Amounts shall accrue for the period from such Redemption Date to such
succeeding Business Day.

SECTION 3.3       Deposit of Redemption Price.

         Solely for purposes of this  Supplement,  Section 1105 of the Indenture
is hereby amended to read as follows:

         The Company  shall  deposit with the Paying Agent in  Luxembourg  on or
before 3:00 p.m. (Luxembourg time) on the Business Day immediately preceding the
Redemption  Date funds  sufficient  to pay the  Redemption  Price of,  including
accrued and unpaid  interest  on, and  Additional  Amounts  with respect to, all
Securities  to be redeemed on such  Redemption  Date (other than  Securities  or
portions  thereof called for redemption on that date that have been delivered by
the Company to the Trustee for  cancellation).  The Paying Agent shall  promptly
return to the Company any funds so  deposited  which are not  required  for that
purpose upon the written request of the Company.

                                    ARTICLE 4

                                    COVENANTS

SECTION 4.1       Payment of the Securities.

         Section 1001 of the Indenture is hereby  amended by adding  thereto the
following:

         The Company  shall pay interest on overdue  principal  and premium,  if
any,  at the  rate  borne by the  Security;  it shall  pay  interest,  including
post-petition interest in the event of a proceeding under any Bankruptcy Law, on
overdue installments of interest at the same rate to the extent lawful.

                                      -18-




<PAGE>



SECTION 4.2       Notice of Default.

         Article Ten of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION  1009.  Notice of  Default.  The Company  will,  so long as any
Securities are outstanding,  deliver to the Trustee,  within 10 days of becoming
aware of any  Default or Event of Default in the  performance  of any  covenant,
agreement or condition in this Indenture,  an Officers'  Certificate  specifying
such  Default or Event of  Default,  the period of  existence  thereof  and what
action the Company is taking or proposes to take with respect thereto.

SECTION 4.3       Limitation on Dividends and Other Distributions.

         Article Ten of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION  1010.  Limitation on Dividends  and Other  Distributions.  The
Company will not (i) declare or pay any dividend or make any distribution on its
shares of Common Shares or to holders of Common Shares (other than  dividends or
distributions  payable in Common Shares or other than as the Company  determines
in good  faith  is  necessary  to  maintain  its  qualification  as real  estate
investment trust under the Code) or (ii) purchase,  redeem or otherwise  acquire
or retire for value any of its Common  Shares,  if at the time of such action an
Event of Default has occurred and is continuing or would exist immediately after
such action.  Notwithstanding the foregoing, the provisions of this Section 1010
will not prevent (i) the payment of any  dividend  within 60 days after the date
of declaration when the payment would have complied with the foregoing provision
on the date of  declaration,  or (ii)  the  Company's  retirement  of any of its
Common  Shares by  exchange  for, or out of the  proceeds  of the  substantially
concurrent sale of, other Common Shares.

                                    ARTICLE 5

                                    RESERVED


                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

SECTION 6.1       Events of Default.

         (a)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture  is hereby  amended by  deleting  paragraphs  (1) and (2)  thereof and
replacing said paragraphs in their entirety with the following:

                                      -19-




<PAGE>



                  (1) default in the payment of any  installment  interest  upon
         any Series A Debenture  or any 7.25%  Debenture or any  installment  of
         interest  upon or any  Additional  Amounts  payable  in  respect of any
         Security or of any coupon  appertaining  thereto,  when such  interest,
         Additional  Amounts or coupon becomes due and payable,  and continuance
         of such default for a period of 30 days; or

                  (2)      default in the payment of the principal of (or
         premium, if any, on) any Security or any Series A Debenture
         or any 7.25% Debenture when it becomes due and payable at
         its Maturity; or

         (b)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture is hereby amended by deleting paragraph (3) thereof.

         (c)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture is hereby  amended by deleting  paragraph (8) thereof and replacing it
with the following:

                  (8) the failure by the Company to perform  any  conversion  of
         the  Securities or the Series A Debentures or the 7.25%  Debentures and
         the continuance of such failure for a period of 60 days.

SECTION 6.2       Rights of Holders to Receive Payment.

         Section  508 of the  Indenture  is hereby  amended to add  thereto  the
following:

         Notwithstanding any other provision of this Indenture, the right of any
Holder  of any  Security  to  convert  such  Security  or to bring  suit for the
enforcement of such right shall not be impaired or affected  without the written
consent of the Holder.

                                    ARTICLE 7

                                     TRUSTEE

SECTION 7.1       Duties of Trustee.

         Article Six of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION 612.  Duties of Trustee.

         (1)      The duties and responsibilities of the Trustee shall be
as provided by the TIA.  If an Event of Default has occurred and
is continuing, the Trustee shall exercise its rights and powers
vested in it by this Indenture and use the same degree of care

                                      -20-




<PAGE>



and skill in their  exercise as a prudent Person would exercise or use under the
circumstances in the conduct of his own affairs.

         (2) Except during the  continuance of an Event of Default and after the
curing or waiving of all such Events of Default which may have occurred:

                  (a) The  Trustee  need  perform  only  those  duties  that are
         specifically set forth in this Indenture,  and the Trustee shall not be
         liable except for the  performance  of such duties as are  specifically
         set forth in this Indenture, and no others, and no implied covenants or
         obligation shall be read into this Indenture against the Trustee.

                  (b) In the  absence of bad faith on its part,  the Trustee may
         conclusively   rely,  as  to  the  truth  of  the  statements  and  the
         correctness  of the opinions  expressed  therein,  upon any  statements
         certificates or opinions furnished to the Trustee and conforming to the
         requirements of this Indenture. The Trustee, however, shall examine the
         certificates  and opinions to determine  whether or not they conform to
         the requirements of this Indenture.

         (3)  The  Trustee  may  not be  relieved  from  liability  for  its own
negligent  action,  its  own  negligent  failure  to  act,  or its  own  willful
misconduct, except that:

                  (a)      This paragraph does not limit the effect of
         paragraph (2) of this Section 612.

                  (b) The Trustee  shall not be liable for any error in judgment
         made in good  faith by a Trust  Officer,  unless it is proved  that the
         Trustee was negligent in ascertaining the pertinent facts.

                  (c) The Trustee shall not be liable with respect to any action
         it takes or omits to take in good faith in accordance  with a direction
         received by it pursuant to Section 512.

                  (d) No provision of this  Indenture  shall require the Trustee
         to  expend  or risk its own  funds or  otherwise  incur  any  financial
         liability in the  performance of any of its duties  hereunder or in the
         exercise  of any of its rights or powers,  if it shall have  reasonable
         grounds  for  believing  that  repayment  of  such  funds  or  adequate
         indemnity  against such risk or liability is not reasonably  assured to
         it.

                  (e)      The Trustee shall have no duty to inquire as to
         the performance of the Company's covenants in Article IV
         hereof.  In addition, the Trustee shall not be deemed to
         have knowledge of any Default or Event of Default except (i)

                                      -21-




<PAGE>



         any Event of Default  occurring  pursuant to Section  6.1(a)  (provided
         that the Trustee is the Paying Agent),  or (ii) any Default or Event of
         Default of which a Trust  Officer of the  Trustee  shall have  received
         written  notification from the Company or any Holder or obtained actual
         knowledge.

         (4) Every  provision of this  Indenture  that in any way relates to the
Trustee is subject to paragraphs  (1), (2), (3), (5) and (6) of this Section 612
and subject to Sections 315 and 316 of the TIA.

         (5) Subject to  subsection  (3),  the Trustee may refuse to perform any
duty or exercise any right or power  unless,  subject to the  provisions  of the
TIA,  it receives  indemnity  satisfactory  to it against  any loss,  liability,
expense or fee.

         (6) The Trustee shall not be liable for interest on any money  received
by it.  Money held in trust by the  Trustee  need not be  segregated  from other
funds except to the extent required by law.

SECTION 7.2       Eligibility; Disqualification.

         Section 607 of the  Indenture is hereby  amended by adding  thereto the
following:

         The Trustee  shall comply with TIA ss.  310(b),  including the optional
provision permitted by the second sentence of TIA ss. 310(b)(9).

SECTION 7.3       Preferential Collection of Claims Against Company.

         The  Trustee is  subject  to TIA ss.  311(a),  excluding  any  creditor
relationship  listed in TIA ss.  311(b).  A  Trustee  who has  resigned  or been
removed shall be subject to TIA ss. 311(a) to the extent indicated therein.


                                    ARTICLE 8

                                    RESERVED


                                    ARTICLE 9

                             AMENDMENTS AND WAIVERS

SECTION 9.1       Amendments and Waivers with Consent of Holders.

         Section  902 of the  Indenture  is hereby  amended to add  thereto  the
following:


                                      -22-




<PAGE>



         With the written  consent of the Holders of not less than a majority in
aggregate  principal  amount  of the  Securities  at the time  outstanding,  the
Company,  when  authorized  by Board  Resolution,  and the  Trustee may amend or
supplement  this  Indenture  (any such  amendment or  supplement to be in a form
satisfactory  to the  Trustee) or the  Securities  for the purpose of adding any
provisions to or changing in any manner or eliminating  any of the provisions of
this  Indenture or of any  supplemental  indenture or of modifying in any manner
the  rights of the  Holders of the  Securities.  The  Holders  of a majority  in
principal  amount of the Securities then  outstanding may waive  compliance in a
particular  instance by the Company with any provision of this  Indenture or the
Securities without notice to any Securityholder. Subject to Section 904, without
the  consent of each  Holder of  Securities  affected,  however,  an  amendment,
supplement or waiver, may not:

                  (1) make any change in Section 508 of this Indenture;

                  (2) make any change that adversely affects the right to
         convert any Security; or

                  (3) make any change in  Article 11 of the Second  Supplemental
         Indenture,  dated as of October 7, 1996,  which  adversely  affects the
         rights of any Securityholder.

SECTION 9.2       Revocation and Effect of Consents.

         Section 904 of the  Indenture is hereby  amended by adding  thereto the
following:

         Subject  to  this  Indenture,  each  amendment,  supplement  or  waiver
evidencing  other action shall become  effective in  accordance  with its terms.
Until an amendment, supplement or waiver becomes effective, a consent to it by a
Holder of a Security is a  continuing  consent by the Holder even if notation of
the consent is not made on any Security.  Any such Holder or subsequent  Holder,
however, may revoke the consent as to his Security or portion of a Security,  if
the Trustee  receives the notice of  revocation  before the date the  amendment,
waiver or other action becomes effective.

         The Company may,  but shall not be obligated  to, fix a record date for
the purpose of  determining  the Holders  entitled to consent to any  amendment,
supplement  or  waiver.  If a record  date is fixed,  then  notwithstanding  the
provisions  of the  immediately  preceding  paragraph,  those  Persons  who were
Holders at such record date (or their duly  designated  proxies)  and only those
Persons, shall be entitled to consent to such amendment, supplement or waiver or
to revoke any consent previously given,  whether or not such Persons continue to
be Holders  after such record date.  No consent  shall be valid or effective for
more

                                      -23-




<PAGE>



than 90 days after such record date unless consent from Holders of the principal
amount of Securities  then  outstanding  required  hereunder for such amendment,
supplement or waiver to be effective  shall have also been given and not revoked
within such 90-day period.

         After an amendment, waiver or other action becomes effective,  pursuant
to  Section  901 or 902,  as the case may be, it shall  bind  every  Holder of a
Security.

                                   ARTICLE 10

                            CONVERSION OF SECURITIES

SECTION 10.1      Right of Conversion; Conversion Price.

         Subject to the provisions of Section 4 of the Securities, the Holder of
any Security or Securities shall have the right, at such Holder's option, at any
time on or after the  Exchange  Date and before the close of business on October
1, 2003  (except  that,  with  respect to any  Security or portion of a Security
which shall be called for redemption, such right shall terminate at the close of
business on the second  Business Day  preceding  the  Redemption  Date fixed for
redemption  of such  Security or portion of a Security  unless the Company shall
default in payment due upon  redemption  thereof),  to  convert,  subject to the
terms and  provisions  of this Article 10, the principal of any such Security or
Securities  or any  portion  thereof  which is  $1,000  principal  amount  or an
integral multiple thereof into Common Shares,  initially at the conversion price
per share of $18.00  or, in case an  adjustment  of such  price has taken  place
pursuant to the  provisions of Section 10.4,  then at the price as last adjusted
(such  price or  adjusted  price  being  referred  to herein as the  "conversion
price"), upon surrender of the Security or Securities, the principal of which is
so to be converted,  together with all unmatured coupons (except that any Bearer
Security  called for  redemption on October 1 through and  including  October 4,
1999 need not be delivered with the coupon that matures on October 1, 1999),  if
any,  and  any  matured  coupons  in  default  appertaining   thereto,  if  any,
accompanied by written notice of conversion  duly executed,  to the Company,  at
any time during usual  business  hours at the office or agency  maintained by it
for such  purpose,  and, if so required by the  Conversion  Agent or  Registrar,
accompanied  by  a  written  instrument  or  instruments  of  transfer  in  form
satisfactory to the Conversion Agent or Registrar duly executed by the Holder or
his duly authorized  representative in writing. For convenience,  the conversion
of any portion of the principal of any Security or Securities into Common Shares
is  hereinafter  sometimes  referred to as the  conversion  of such  Security or
Securities.


                                      -24-




<PAGE>



SECTION 10.2      Issuance of Shares on Conversion.

         As promptly as practicable after the surrender,  as herein provided, of
any Security or Securities for conversion, the Company shall deliver or cause to
be delivered at its said office or agency,  to or upon the written  order of the
Holder of the Security or Securities so surrendered,  certificates  representing
the  number of fully  paid and  nonassessable  Common  Shares  into  which  such
Security or  Securities  may be converted in accordance  with the  provisions of
this  Article  10. Such  conversion  shall be deemed to have been made as of the
close of business on the date that such Security or  Securities  shall have been
surrendered  for  conversion  by  delivery  thereof  with a  written  notice  of
conversion  duly executed,  so that the rights of the Holder of such Security or
Securities  as a  Securityholder  shall  cease at such time and,  subject to the
following  provisions  of this  paragraph,  the  Person or Persons  entitled  to
receive the Common Shares upon  conversion of such Security or Securities  shall
be treated  for all  purposes as having  become the record  holder or holders of
such Common Shares at such time and such  conversion  shall be at the conversion
price in effect at such time; provided,  however,  that no such surrender on any
date when the  stock  transfer  books of the  Company  shall be closed  shall be
effective  to  constitute  the Person or Persons  entitled to receive the Common
Shares  upon such  conversion  as the record  holder or  holders of such  Common
Shares on such date,  but such  surrender  shall be effective to constitute  the
Person or Persons entitled to receive such Common Shares as the record holder or
holders thereof for all purposes at the close of business on the next succeeding
day on which such stock transfer books are open; and provided,  further, that in
such event such  conversion  shall be at the  conversion  price in effect on the
date that such Security or Securities shall have been surrendered for conversion
by delivery thereof,  as if the stock transfer books of the Company had not been
closed.  The  Company  shall  give or cause to be given to the  Trustee  and the
Conversion Agent written notice whenever the stock transfer books of the Company
shall be closed.

         In  the  case  of any  Registered  Security  or  Bearer  Security  of a
denomination  other  than  $1,000  that is  converted  in part  only,  upon such
conversion  the Company  shall execute and the Trustee  shall  authenticate  and
deliver to the Conversion  Agent,  and the Conversion Agent shall deliver to the
Holder  thereof,  in each  case at the  expense  and  written  direction  of the
Company,  a new Security or Securities of any authorized kind or denomination as
requested by such Holder, in aggregate principal amount equal to the unconverted
portion of the principal amount of such Security.

SECTION 10.3      No Adjustment for Interest or Dividends.

         No payment or  adjustment  in respect of interest on the  Securities or
dividends on the Common Shares shall be made upon

                                      -25-




<PAGE>



the  conversion  of any Security or  Securities;  provided,  however,  that if a
Security or any portion  thereof  shall be converted  subsequent  to any regular
record date and on or prior to the next  succeeding  interest  payment date, the
interest  falling  due on such  interest  payment  date shall be payable on such
interest  payment  date  notwithstanding  such  conversion,  and  such  interest
(whether  or not  punctually  paid or duly  provided  for)  shall be paid to the
Person in whose name such  Security  is  registered  at the close of business on
such regular record date and Securities  surrendered  for conversion  during the
period from the close of  business on any regular  record date to the opening of
business on the  corresponding  interest  payment  date must be  accompanied  by
payment of an amount equal to the interest payable on such interest payment date
(except in the case of  Registered  Securities  of  portions  thereof  which are
called for redemption on October 1 through and including  October 4, 1999, which
need not be accompanied by such amount payable in respect of the October 1, 1999
interest payment date).

SECTION 10.4      Adjustment of Conversion Price.

         (1) In  case  the  Company  shall  pay  or  make a  dividend  or  other
distribution on any class of Capital Stock of the Company in Common Shares,  the
conversion  price in effect at the opening of business on the day  following the
date fixed for the  determination  of  shareholders  entitled  to  receive  such
dividend or other distribution shall be reduced so that the same shall equal the
price determined by multiplying such conversion price by a fraction of which the
numerator  shall be the  number of  Common  Shares  outstanding  at the close of
business on the date fixed for such  determination  and the denominator shall be
the sum of such  number of shares  and the total  number of shares  constituting
such  dividend  or other  distribution,  such  adjustment  to  become  effective
immediately  after the opening of business on the day  following  the date fixed
for such determination and in the event that such dividend or other distribution
is not so made, or is made in part, the conversion price shall again be adjusted
to be the conversion price which would then be in effect (i) if such record date
has not been fixed or (ii) based on the actual number of shares actually issued,
as the case may be.

         (2) In case at any time the Company shall (A) subdivide its outstanding
Common  Shares into a greater  number of shares,  (B)  combine  its  outstanding
Common Shares into a smaller number of shares, or (C) issue by  reclassification
of its Common Shares (including any such  reclassification  in connection with a
consolidation or merger in which the Company is the continuing  corporation) any
shares of Capital Stock, the conversion price in effect at the effective date of
such  subdivision,  combination  or  reclassification  shall be  proportionately
adjusted so that the holder of any Security  surrendered  for  conversion  after
such time shall be entitled to receive the aggregate number and kind of

                                      -26-




<PAGE>



shares which,  if such  Security had been  converted  immediately  prior to such
time, he would have owned upon such conversion and been entitled to receive upon
such subdivision, combination or reclassification.  Such adjustment shall become
effective immediately after the effective date of such subdivision,  combination
or  reclassification.  Such adjustment shall be made  successively  whenever any
event listed above shall occur.

         (3) In case at any time the  Company  shall  fix a record  date for the
issuance of rights,  options or  warrants  to all  holders of its Common  Shares
entitling  them to  subscribe  for or  purchase  Common  Shares  (or  securities
convertible  into  Common  Shares)  at a price per share  less than the  current
market  price per Common  Share on such record  date,  the  conversion  price in
effect at the opening of business on the day following such record date shall be
reduced so that the same shall equal the price  determined by  multiplying  such
conversion  price by a fraction  of which the  numerator  shall be the number of
Common Shares  outstanding at the close of business on such record date plus the
number of Common Shares (or its equivalent)  which the aggregate of the offering
price of the total  number of shares so offered  for  subscription  or  purchase
would purchase at such current market price per Common Share and the denominator
shall be the number of Common  Shares  outstanding  at the close of  business on
such record date plus the number of Common Shares (or its equivalent) so offered
for  subscription or purchase,  such reduction to become  effective  immediately
after the opening of business on the day following  such record date;  provided,
however,  that no adjustment to the  conversion  price shall be made pursuant to
this Section  10.4(3) if the holders of Securities  receive,  or are entitled to
receive upon  conversion or otherwise,  the same rights,  options or warrants as
are issued to the holders of Common Shares,  on the same terms and conditions as
such rights,  options or warrants are so issued to the holders of Common Shares.
Such reduction shall be made successively  whenever such a record date is fixed;
and in the event that such rights, options or warrants are not so issued, or are
issued in part, or are issued but all or part of which expire  unexercised,  the
conversion  price shall again be adjusted to be the conversion price which would
then be in effect  (i) if such  record  date had not been fixed or (ii) based on
the actual number of rights,  options or warrants  actually issued,  as the case
may be.

         (4) In case at any time the  Company  shall  fix a record  date for the
making of a distribution, by dividend or otherwise, to all holders of its Common
Shares,  of shares of beneficial  interest in  Hospitality  Properties  Trust, a
Maryland  real  estate  investment  trust  ("HPT"),  then in each  such case the
conversion  price in effect  after  such  record  date  shall be  determined  by
multiplying the conversion price in effect immediately prior to such record date
by a fraction,  of which the numerator  shall be the total number of outstanding
Common Shares multiplied by the

                                      -27-




<PAGE>



current market price per Common Share on such record date,  less the fair market
value  (as  determined  by a Board  Resolution,  whose  determination  shall  be
conclusive and described in a statement filed with the Trustee) of the shares of
beneficial  interest in HPT so to be  distributed,  and of which the denominator
shall be the total  number  of  outstanding  Common  Shares  multiplied  by such
current  market  price  per  Common  Share.   Such  adjustment   shall  be  made
successively  whenever  such a record date is fixed and shall  become  effective
immediately after the record date for the determination of stockholders entitled
to receive the  distribution;  and in the event that such distribution is not so
made,  the conversion  price shall again be adjusted to be the conversion  price
which would then be in effect if such record date has not been fixed.

         (5) For the purpose of any computation under paragraphs (3) and (4) for
this  Section,  the current  market  price per share of Common Stock on any date
shall be deemed to be the average of the Closing  Prices for the 15  consecutive
Business Days selected by the Company  commencing  not more than 30 and not less
than 20 Business Days before the date in question.

         (6) No adjustment in the conversion price shall be required unless such
adjustment (plus any adjustments not previously made by reason of this paragraph
(6))  would  require  an  increase  or  decrease  of at least 1% in such  price;
provided,  however,  that any adjustments  which by reason of this paragraph (6)
are not  required to be made shall be carried  forward and taken into account in
any subsequent  adjustment.  All calculations  under this paragraph (6) shall be
made to the nearest cent.

         (7) The Company may, but shall not be required to, make such reductions
in the  conversion  price,  in addition to those required by paragraph (1), (2),
(3) and (4) of this Section 10.4 as the Company's  Board of Directors  considers
to be  advisable  in order to avoid or diminish any income tax to any holders of
shares of Common Stock  resulting from any dividend or  distribution of stock or
issuance of rights or warrants  to purchase or  subscribe  for stock or from any
event  treated as such for income tax  purposes  or for any other  reasons.  The
Board of Directors  shall have the power to resolve any ambiguity or correct any
error in the  adjustments  made pursuant to this Section 10.4 and its actions in
so doing shall be final and conclusive.


                                      -28-




<PAGE>



         (8) The  adjustments  provided  for in this  Section 10.4 shall be made
successively whenever any event listed above shall occur.

SECTION 10.5      Notice of Adjustment of Conversion Price.

         Whenever the conversion  price for the Securities is adjusted as herein
provided:

                  (1) the Company shall compute the adjusted conversion price in
         accordance with Section 10.4 and shall prepare an Officers' Certificate
         setting forth the adjusted  conversion  price and showing in reasonable
         detail  the  facts  upon  which  such   adjustment  is  based  and  the
         computation  thereof,  and such certificate shall forthwith be filed at
         each office or agency  maintained  for the purpose of conversion of the
         Securities  pursuant  to  Section  2.4 and  with  the  Trustee  and the
         Conversion Agent; and

                  (2) a  notice  stating  that  the  conversion  price  has been
         adjusted and setting forth the adjusted  conversion price shall as soon
         as  practicable  be  mailed  by  the  Company  to  all  Holders  of the
         Securities at their last addresses as they shall appear in the Security
         Register.

                  (3) If the conversion  price is adjusted and the Company fails
         to file an Officers'  Certificate  with the Trustee and the  Conversion
         Agent as provided by Section  10.5(1),  the Trustee and the  Conversion
         Agent  (other  than the Company or a  Subsidiary)  shall be entitled to
         rely  conclusively  on the conversion  price set forth in the Officers'
         Certificate  most recently  received by the Trustee and the  Conversion
         Agent  (or as set forth in the  Securities  and this  Indenture  if the
         conversion price shall not have been adjusted).

SECTION 10.6      Notice of Certain Corporate Action.

         In case:

                  (a) the Company shall authorize the granting to holders of its
         Common Shares of rights or warrants  entitling them to subscribe for or
         purchase  any  shares  of  Capital  Stock of any  class or of any other
         rights; or

                  (b)  of  any  reclassification  of the  Common  Shares  of the
         Company,  or of any  distribution  of any assets of the  Company to the
         holders  of its Common  Shares,  or of any  consolidation  or merger to
         which the Company is a party and for which approval of any shareholders
         of the  Company  is  required,  or of the  sale or  transfer  of all or
         substantially all of the assets of the Company; or


                                      -29-




<PAGE>



                  (c)  of the voluntary or involuntary dissolution,
         liquidation or winding up of the Company;

then the  Company  shall  cause to be filed at each  Conversion  Agent and shall
cause to be mailed to the Trustee and given to all Holders of the  Securities in
accordance  with  Section  14  of  the  Bearer  Securities  and  the  Registered
Securities  at least 20 days (or 10 days in any case  specified in clause (a) or
(b) above) prior to the applicable record date hereinafter  specified,  a notice
stating  (x) the date on which a record is to be taken for the  purpose  of such
dividend, distribution,  rights or warrants, or, if a record is not to be taken,
the date as of which the  Holders of Common  Shares of record to be  entitled to
such dividend, distribution, rights or warrants are to be determined, or (y) the
date on which such  reclassification,  consolidation,  merger,  sale,  transfer,
dissolution,  liquidation or winding up is expected to become effective, and the
date as of which it is expected that holders of Common Shares of record shall be
entitled to exchange their Common Shares for securities,  cash or other property
deliverable upon such reclassification,  consolidation,  merger, sale, transfer,
dissolution,  liquidation  or winding up. Such notice  shall also state  whether
such  transaction  will  result  in  any  adjustment  in  the  conversion  price
applicable  to the  Securities  and,  if  so,  shall  state  what  the  adjusted
conversion price will be and when it will become effective.  Neither the failure
to give the notice  required by this  Section,  nor any defect  therein,  to any
particular  Holder shall affect the sufficiency of the notice or the legality or
validity of any such dividend, distribution,  right, warrant,  reclassification,
consolidation,  merger, sale, transfer, liquidation,  dissolution or winding-up,
or the vote on any action authorizing such with respect to the other holders.

SECTION 10.7      Taxes on Conversions.

         The Company will pay any and all documentation,  stamp or similar taxes
that may be payable in respect of the  issuance or delivery of Common  Shares on
conversion of the Securities pursuant hereto. The Company shall not, however, be
required to pay any tax which may be payable in respect of any transfer involved
in the issuance  and delivery of Common  Shares in a name other than that of the
Holder of the Security or Securities  to be  converted,  and no such issuance or
delivery shall be made unless and until the Person  requesting such issuance has
paid to the  Company  the  amount of any such  tax,  or has  established  to the
satisfaction of the Company that such tax has been paid. The

                                      -30-




<PAGE>



Company  extends  no  protection  with  respect  to any other  taxes  imposed in
connection with conversion of Securities.

SECTION 10.8      Fractional Shares.

         No fractional shares or scrip  representing  fractional shares shall be
issued upon any  conversion  of the  Securities.  If any such  conversion  would
otherwise  require the  issuance of a  fractional  share an amount equal to such
fraction  multiplied by the current market price per Common Share (determined as
provided in paragraph  (5) of Section  10.4) on the day of  conversion  shall be
paid to the Holder in cash by the Company.

SECTION 10.9      Cancellation of Converted Securities.

         All  Securities  delivered  for  conversion  shall be  delivered to the
Trustee or the  Conversion  Agent to be canceled by or at the  direction  of the
Trustee or the Conversion Agent,  which shall dispose of the same as provided in
Section 309 of the Indenture.

SECTION 10.10     Provisions in Case of Consolidation, Merger or Sale of Assets

         (1) In case of any  consolidation of the Company with, or merger of the
Company into,  any Person,  or in case of any merger of another  Person into the
Company  (other  than a  consolidation  or merger  which  does not result in any
reclassification,  conversion,  exchange or cancellation  of outstanding  Common
Shares),  or in case of any sale or transfer of all or substantially  all of the
assets of the Company, the Person formed by such consolidation or resulting from
such merger or which acquires such assets, as the case may be, shall execute and
deliver to the Trustee a  supplemental  indenture  providing  that the Holder of
each  Security  then  outstanding  shall have the right  thereafter,  during the
period such  Security  shall be  convertible  as  specified  in Section  10.1 to
convert  such  Security  only into the kind and amount of  securities,  cash and
other property receivable upon such consolidation, merger, sale or transfer by a
holder of the number of Common Shares into which such  Security  might have been
converted  immediately prior to such  consolidation,  merger,  sale or transfer.
Such  supplemental  indenture  shall provide for adjustments  which,  for events
subsequent to the effective  date of such  supplemental  indenture,  shall be as
nearly equivalent as may be practicable to the adjustments  provided for in this
Article 10. The above  provisions of this Section 10.10 shall similarly apply to
successive consolidations, mergers, sales or transfers.

         (2) The Trustee shall not be under any  responsibility to determine the
correctness  of any  provisions  contained  in any such  supplemental  indenture
relating  either  to the kind or amount  of  shares  of stock or  securities  or
property receivable by Holders upon the conversion of their Securities after any
such

                                      -31-




<PAGE>



reclassification,  change,  consolidation,  merger, sale or conveyance or to any
adjustment to be made with respect thereto.

SECTION 10.11     Disclaimer  by Trustee of  Responsibility  for Certain
                  Matters.

         The Trustee and each  Conversion  Agent  (other than the Company or any
Subsidiary)  shall  not at any time be under any duty or  responsibility  to any
Holder of the Securities to determine  whether any facts exist which may require
any adjustment of the conversion  price,  how it should be calculated or what it
should be, or with respect to the nature or extent of any such  adjustment  when
made, or with respect to the method  employed,  or herein or in any supplemental
indenture  provided  to be  employed,  in making the same.  The Trustee and each
Conversion  Agent  (other  than the  Company  or any  Subsidiary)  shall  not be
accountable  with respect to the validity,  value,  kind or amount of any Common
Shares,  or of any  securities  or property,  which may at any time be issued or
delivered  upon the conversion of any Security;  and it makes no  representation
with  respect  thereto.  The Trustee and each  Conversion  Agent (other than the
Company  or any  Subsidiary)  shall not be  responsible  for any  failure of the
Company to issue, transfer or deliver any Common Shares or share certificates or
other  securities or property upon the surrender of any Security for the purpose
of conversion or, subject to Section 7.1, to comply with any of the covenants of
the Company contained in this Article 10.

SECTION 10.12     Covenant to Reserve Shares.

         The  Company  covenants  that it will at all  times  reserve  and  keep
available,  free from preemptive  rights,  out of its authorized  Common Shares,
solely for the purpose of issuance upon  conversion of the  Securities as herein
provided,  such  number of  Common  Shares as shall  then be  issuable  upon the
conversion of all outstanding Securities.  The Company covenants that all Common
Shares which shall be so issuable shall be, when issued, duly and validly issued
and fully paid and  non-assessable.  For  purposes of this  Section  10.12,  the
number of Common Shares which shall be  deliverable  upon the  conversion of all
outstanding  Securities  shall be computed as if at the time of computation  all
outstanding Securities were held by a single holder.

                                   ARTICLE 11

                                  SUBORDINATION

SECTION 11.1      Securities Subordinated to Senior Indebtedness.

         The Company and each Holder,  by its  acceptance of  Securities,  agree
that (a) the payment of the principal of and interest on the  Securities and (b)
any other payment in respect

                                      -32-




<PAGE>



of the Securities,  including on account of the acquisition or redemption of the
Securities  by the  Company  is  subordinated,  to the  extent and in the manner
provided  in this  Article  11,  to the  prior  payment  in  full of all  Senior
Indebtedness  of the  Company,  and all other  Obligations  in respect  thereof,
whether  outstanding  at the  date of this  Supplement  or  thereafter  created,
incurred, assumed or guaranteed, and that these subordination provisions are for
the benefit of the holders of Senior Indebtedness.

         This Article 11 shall constitute a continuing offer to all Persons who,
in reliance upon such provisions, become holders of, or continue to hold, Senior
Indebtedness,  and such  provisions  are made for the  benefit of the holders of
Senior Indebtedness, and such holders are made obligees hereunder and any one or
more of them may enforce such provisions.

         To the  extent  any  provision  of  this  Article  11  conflicts  or is
inconsistent  with any other provision of the Indenture or this Supplement,  the
provisions of this Article 11 shall govern and supersede  such  inconsistent  or
conflicting provision.

SECTION 11.2      No Payment on Securities in Certain Circumstances.

         (a) No payment may be made by the  Company on account of the  principal
of, premium,  if any,  interest on the Securities,  or to acquire or to purchase
any of the  Securities  for cash or  property,  or on account of the  redemption
provisions of the Securities,  in each case other than payments made with Junior
Securities  of the Company (i) upon the maturity of any Senior  Indebtedness  of
the Company by lapse of time, acceleration (unless waived) or otherwise,  unless
and until all  principal  of,  premium,  if any,  and  interest  on such  Senior
Indebtedness and all other obligations in respect thereof are first paid in full
(or such payment is duly  provided  for), or (ii) in the event of default in the
payment of any  principal  of,  premium,  if any, or  interest  on, or any other
obligation in respect of, any Senior Indebtedness of the Company when it becomes
due and  payable,  whether at maturity or at a date fixed for  prepayment  or by
declaration  or otherwise (a "Payment  Default"),  unless and until such Payment
Default has been cured or waived by the holders of such Senior  Indebtedness  or
otherwise has ceased to exist.

         (b) Upon (i) the happening of an event of default (other than a Payment
Default)  that  permits  the  holders  of  any  Senior   Indebtedness  or  their
representative immediately to accelerate its maturity and (ii) either such event
of default shall be subject of a judicial  proceeding or written  notice of such
event of default shall have been given to the Company by the  requisite  holders
of such Senior Indebtedness or their representative (a "Payment Notice"),  then,
unless and until such event of default has been cured or waived by the requisite
holders of such Senior Indebtedness or otherwise has ceased to exist, no payment
(by

                                      -33-




<PAGE>



set-off or  otherwise)  may be made by or on behalf of the Company on account of
the principal of, premium, if any, interest on the Securities,  or to acquire or
repurchase  any of the  Securities  for cash or  property,  or on account of the
redemption  provisions of the  Securities,  in any such case other than payments
made with Junior Securities of the Company.

         (c) In  furtherance  of the  provisions  of Section  11.1, in the event
that, notwithstanding the foregoing provisions of this Section 11.2, any payment
or distribution of assets of the Company (other than Junior Securities) shall be
received by the  Trustee or the Holders or any Paying  Agent at a time when such
payment or  distribution  is prohibited by the  provisions of this Section 11.2,
then such  payment or  distribution  shall be received  and held in trust by the
Trustee or such Holders or Paying Agent (or, if the Company or any  Affiliate of
the  Company is acting as its own Paying  Agent,  money for any such  payment or
distribution  shall be  segregated  or held in  trust)  for the  benefit  of the
holders of Senior Indebtedness of the Company, and shall be paid or delivered by
the  Trustee or such  Holders or such Paying  Agent,  as the case may be, to the
holders of Senior Indebtedness of the Company remaining unpaid or unprovided for
or their representative or representatives,  or to the trustee or trustees under
any indenture  pursuant to which any  instruments  evidencing any of such Senior
Indebtedness  of the  Company may have been  issued,  ratably  according  to the
aggregate amounts remaining unpaid on account of the Senior  Indebtedness of the
Company  held or  represented  by each,  for  application  to the payment of all
Senior Indebtedness of the Company in full after giving effect to any concurrent
payment and distribution to the holders of such Senior Indebtedness, but only to
the extent  that as to any holder of such  Senior  Indebtedness,  as promptly as
practical following receipt by such holder of written notice from the Trustee to
the holders of such Senior  Indebtedness  that such prohibited  payment has been
received by the Trustee,  Holder(s) or Paying Agent (or has been  segregated  as
provided above), such holder (or a representative therefor) notifies the Trustee
and the Paying Agent in writing of the amounts then due and owing on such Senior
Indebtedness, if any, held by such holder and only the amounts specified in such
notices to the Trustee shall be paid to the holders of such Senior Indebtedness.

SECTION 11.3      Securities Subordinated to Prior Payment of All Senior
                  Indebtedness on Dissolution, Liquidation or Reorganization.

         Upon any  distribution  of assets of the Company upon any  dissolution,
winding up,  total or partial  liquidation  or  reorganization  of the  Company,
whether voluntary or involuntary, in bankruptcy,  insolvency,  receivership or a
similar  proceeding  or upon  assignment  for the  benefit of  creditors  or any
marshalling of assets or liabilities:

                                      -34-




<PAGE>



         (a) the holders of all Senior  Indebtedness  of the Company shall first
be entitled to receive payments in full (or have such payment duly provided for)
before  the  Holders  are  entitled  to  receive  any  payment on account of the
principal of, premium,  if any, interest on, and Additional Amounts with respect
to, the Securities (other than Junior Securities);

         (b) any payment or distribution of assets of the Company of any kind or
character,   whether  in  cash,   property  or  securities  (other  than  Junior
Securities)  to which the Holders or the Trustee on behalf of the Holders  would
be entitled (by set-off or otherwise), except for the provisions of this Article
11, shall be paid by the  liquidating  trustee or agent or other  Person  making
such a payment or distribution directly to the holders of Senior Indebtedness of
the Company or their  representative  to the extent necessary to make payment in
full of all such Senior  Indebtedness  remaining unpaid,  after giving effect to
any  concurrent   payment  or   distribution  to  the  holders  of  such  Senior
Indebtedness; and

         (c) in the event that,  notwithstanding  the foregoing,  any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities (other than Junior Securities),  shall be received by the
Trustee or the Holders or any Paying Agent (or, if the Company or any  Affiliate
of the Company is acting as its own Paying Agent,  money for any such payment or
distribution  shall be  segregated or held in trust) on account of the principal
of,  premium,  if any,  interest on, or Additional  Amounts with respect to, the
Securities  before all Senior  Indebtedness of the Company is paid in full, such
payment or  distribution  shall be received  and held in trust by the Trustee or
such Holder or Paying Agent (or, if the Company or any  Affiliate of the Company
is acting as its own Paying  Agent,  money for any such payment or  distribution
shall be  segregated  or held in trust) for the  benefit of the  holders of such
Senior  Indebtedness,  or their  respective  representative,  or the  trustee or
trustees under any indenture pursuant to which any instruments evidencing any of
such Senior Indebtedness of the Company may have been issued,  ratably according
to the  respective  amounts of such Senior  Indebtedness  held or represented by
each,  to the extent  necessary to make  payment as provided  herein of all such
Senior  Indebtedness  remaining  unpaid  after giving  effect to all  concurrent
payments and distributions and all provisions  therefor to or for the holders of
such Senior  Indebtedness,  but only to the extent that as to any holder of such
Senior  Indebtedness,  as promptly as practical following receipt by such holder
of written  notice from the  Trustee to the holders of such Senior  Indebtedness
that such  prohibited  payment has been  received by the  Trustee,  Holder(s) or
Paying  Agent (or has been  segregated  as  provided  above),  such holder (or a
representative therefor) notifies the Trustee and the Paying Agent in writing of
the amounts then due and owing on such Senior Indebtedness, if any,

                                      -35-




<PAGE>



held by such  holder  and only the  amounts  specified  in such  notices  to the
Trustee shall be paid to the holders of such Senior Indebtedness.

SECTION 11.4      Securityholders to Be Subrogated to Rights of Holders of
                  Senior Indebtedness.

         Subject  to the  payment  in full  of all  Senior  Indebtedness  of the
Company as provided herein, the Holders of Securities shall be subrogated to the
rights of the  holders  of such  Senior  Indebtedness  to  receive  payments  or
distributions  of assets of the Company  applicable  to the Senior  Indebtedness
until all amounts  owing on the  Securities  shall be paid in full,  and for the
purpose of such  subrogation no such payments or distributions to the holders of
such Senior  Indebtedness  by the Company,  or by or on behalf of the Holders by
virtue of this Article 11, which  otherwise  would have been made to the Holders
shall,  as between the Company and the  Holders,  be deemed to be payment by the
Company on account of such Senior  Indebtedness,  it being  understood  that the
provisions  of this  Article 11 are and are  intended  solely for the purpose of
defining the relative rights of the Holders, on the one hand, and the holders of
such Senior Indebtedness, on the other hand.

         If any payment or  distribution  to which the Holders  would  otherwise
have been  entitled  but for the  provisions  of this Article 11 shall have been
applied,  pursuant  to the  provisions  of this  Article  11, to the  payment of
amounts payable under Senior Indebtedness of the Company, then the Holders shall
be entitled to receive from the holders of such Senior Indebtedness any payments
or  distributions  received by such holders of Senior  Indebtedness in excess of
the amount  sufficient  to pay all amounts  payable  under or in respect of such
Senior Indebtedness in full.

SECTION 11.5      Obligations of the Company Unconditional.

         Nothing contained in this Article 11 or elsewhere in this Supplement or
in the  Securities is intended to or shall impair as between the Company and the
Holders,   the   obligation   of  each  such  Person,   which  is  absolute  and
unconditional, to pay to the Holders the principal of, premium, if any, interest
on, and Additional  Amounts with respect to, the Securities as and when the same
shall become due and payable in accordance  with their terms,  or is intended to
or shall affect the relative  rights of the Holders and creditors of the Company
other than the holders of the Senior Indebtedness,  nor shall anything herein or
therein prevent the Trustee or any Holder from exercising all remedies otherwise
permitted by applicable  law upon default under this  Indenture,  subject to the
rights, if any, under this Article 11, of the holders of Senior  Indebtedness in
respect  of cash,  property  or  securities  of the  Company  received  upon the
exercise

                                      -36-




<PAGE>



of any such remedy.  Notwithstanding anything to the contrary in this Article 11
or elsewhere in this Supplement or in the Securities,  upon any  distribution of
assets of the Company  referred to in this Article 11, the  Trustee,  subject to
the provisions of Sections 602 and 612 of the  Indenture,  and the Holders shall
be entitled to rely  conclusively  upon any order or decree made by any court of
competent  jurisdiction in which such  dissolution,  winding up,  liquidation or
reorganization  proceedings  are pending,  or a certificate  of the  liquidating
trustee or agent or other Person  making any  distribution  to the Trustee or to
the Holders for the purpose of ascertaining  the Persons entitled to participate
in  such  distribution,  the  holders  of  the  Senior  Indebtedness  and  other
Indebtedness of the Company,  the amount thereof or payable thereon,  the amount
or amounts paid or distributed  thereon and all other facts pertinent thereto or
to this Article 11 so long as such court has been apprised of the provisions of,
or the order,  decree or certificate  makes reference to, the provisions of this
Article 11. The Trustee shall be entitled to rely conclusively upon the delivery
to it of a written  notice by a person  representing  himself  to be a holder of
Senior Indebtedness (or a trustee or representative on behalf of such holder) to
establish  that such a notice has been given by a holder of Senior  Indebtedness
(or a trustee or representative on behalf of such holder). In the event that the
Trustee  determines,  in good faith,  that  further  evidence  is required  with
respect  to the  right of any  person  as a holder  of  Senior  Indebtedness  to
participate  in any payment or  distribution  pursuant  to this  Article 11, the
Trustee  may  request  such  person  to  furnish   evidence  to  the  reasonable
satisfaction of the Trustee as to the amount of Senior Indebtedness held by such
person, as to the extent to which such person is entitled to participate in such
payment or  distribution,  and as to other facts pertinent to the rights of such
person under this Article 11, and if such evidence is not furnished, the Trustee
may defer any payment to such person pending  judicial  determination  as to the
right of such person to receive such  payment.  Nothing in this Article 11 shall
apply to the claims of, or payments to, the Trustee under or pursuant to Section
606 of the  Indenture.  The  provisions  of this Section 11.5  applicable to the
Trustee shall (unless the context  requires  otherwise) also apply to any Paying
Agent.

SECTION 11.6      Trustee Entitled to Assume Payments Not Prohibited in Absence
                  of Notice.

         The Trustee or any Paying Agent  (other than the Company  acting as its
own  Paying  Agent)  shall  not at any time be  charged  with  knowledge  of the
existence  of any facts which would  prohibit the making of any payment to or by
the Trustee or such Paying Agent unless and until a Trust Officer of the Trustee
or such Paying Agent (other than the Company acting as its own Paying Agent), as
the case may be, shall have received, no later than three Business Days prior to
such payment, written notice thereof

                                      -37-




<PAGE>



from the Company or from one or more holders of Senior  Indebtedness or from any
representative  therefor and,  prior to the receipt of any such written  notice,
the Trustee, subject to the provisions of Sections 602 and 612 of the Indenture,
and such Paying Agent shall be entitled in all respects  conclusively  to assume
that no such fact exists.

SECTION 11.7      Application by Trustee of Assets Deposited with It.

         Any deposit of assets with the Trustee or any Paying Agent  (whether or
not in trust) for the  payment of  principal  of or interest  on, or  Additional
Amounts with respect to, any  Securities  shall be subject to the  provisions of
Sections 11.1,  11.2,  11.3 and 11.4;  provided that, if prior to three Business
Days preceding the date on which by the terms of this Supplement any such assets
may become  distributable for any purpose (including,  without  limitation,  the
payment of either  principal  of or interest on any  Security)  the Trustee or a
Paying  Agent shall not have  received  with  respect to such assets the written
notice provided for in Section 11.6, then the Trustee or such Paying Agent shall
have full power and  authority  to receive  such assets and to apply the same to
the  purpose  for which they were  received,  and shall not be  affected  by any
notice to the contrary which may be received by it on or after such date.

SECTION 11.8      Subordination Rights Not Impaired by Acts or Omissions of the
                  Company or Holders of Senior Indebtedness.

         No right of any present or future holders of any Senior Indebtedness to
enforce subordination  provisions contained in this Article 11 shall at any time
in any way be prejudiced or impaired by any act or failure to act on the part of
the Company or by any act or failure to act, in good faith,  by any such holder,
or by any  noncompliance  by the  Company  with the  terms  of this  Supplement,
regardless  of any  knowledge  thereof  which  any  such  holder  may have or be
otherwise  charged with. The holders of Senior  Indebtedness may extend,  renew,
modify or amend the terms of the Senior  Indebtedness  or any security  therefor
and release,  sell or exchange such security and otherwise  deal freely with the
Company, all without affecting the liabilities and obligations of the parties to
this Indenture or the Holders.

SECTION 11.9      Securityholders Authorize Trustee to Effectuate Subordination
                  of Securities.

         Each Holder of the Securities by his acceptance  thereof authorizes and
expressly  directs  the  Trustee  on his  behalf to take  such  action as may be
necessary or appropriate to effectuate the subordination provisions contained in
this  Article  11 and to  protect  the rights of the  Holders  pursuant  to this
Supplement,

                                      -38-




<PAGE>



and appoints the Trustee its  attorney-in-fact for such purpose,  including,  in
the event of any dissolution,  winding up,  liquidation or reorganization of the
Company (whether in bankruptcy,  insolvency or receivership  proceedings or upon
an  assignment  for the benefit of  creditors of the  Company),  the making of a
timely  filing of a claim for the unpaid  balance of its  Securities in the form
required in said proceedings and cause said claim to be approved. If the Trustee
does  not file a proper  claim  or  proof of debt in the form  required  in such
proceeding prior to 30 days before the expiration of the time to file such claim
or claims, then the holders of the Senior  Indebtedness or their  representative
are or is  hereby  authorized  to have the  right  to file and are or is  hereby
authorized to file an appropriate claim for and on behalf of the Holders of said
Securities. Nothing herein contained shall be deemed to authorize the Trustee or
the holders of Senior  Indebtedness  or their  representative  to  authorize  or
consent  to or  accept  or adopt on  behalf  of any  Securityholder  any plan of
reorganization,  arrangement, adjustment or composition affecting the Securities
or the rights of any Holder thereof,  or to authorize the Trustee or the holders
of Senior  Indebtedness or their  representative to vote in respect of the claim
of any Securityholder in any such proceeding.

SECTION 11.10     Right of Trustee to Hold Senior Indebtedness.

         The  Trustee  and any Agent  shall be entitled to all of the rights set
forth in this Article 11 in respect of any Senior  Indebtedness at any time held
by it to the same extent as any other holder of Senior Indebtedness, and nothing
in this Supplement shall be construed to deprive the Trustee or any Agent of any
of its rights as such holder.

SECTION 11.11     Article 11 Not to Prevent Events of Default.

         The failure to make a payment on account of principal of,  premium,  if
any,  interest on, or  Additional  Amounts with  respect to, the  Securities  by
reason of any  provision of this Article 11 shall not be construed as preventing
the  occurrence  of a Default or an Event of Default  under  Section  501 of the
Indenture or in any way prevent the Holders or the Trustee from  exercising  any
right or remedy hereunder or at law or in equity other than the right to receive
payment on the Securities in accordance with the terms of this Article 11.

SECTION 11.12     No Fiduciary Duty of Trustee to Holders of Senior
                  Indebtedness.

         Neither  the  Trustee  nor any Paying  Agent shall be deemed to owe any
fiduciary duty to the holders of Senior Indebtedness, and shall not be liable to
any such holders  (other than for its willful  misconduct or  negligence)  if it
shall in good faith

                                      -39-




<PAGE>



mistakenly pay over or distribute to the Holders of Securities or the Company or
any other  Person,  cash,  property or securities to which any holders of Senior
Indebtedness  shall be  entitled  by virtue  of this  Article  11 or  otherwise.
Nothing in this  Section  11.12 shall  affect the  obligation  of any other such
Person to hold such payment for the benefit of, and to pay such payment over to,
the holders of Senior  Indebtedness or their  representative  in accordance with
the provisions hereof.

                                   ARTICLE 12

                                  MISCELLANEOUS

SECTION 12.1      Trust Indenture Act Controls.

         If any provision of this Indenture limits,  qualifies or conflicts with
another provision which is required to be included in this Indenture by the TIA,
the  required  provisions  shall  control.  The  provisions  of TIA Sections 310
through  317  that  impose  duties  on  any  Person  (including  the  provisions
automatically   deemed  included  herein  unless  expressly   excluded  by  this
Indenture)  are a part of and govern this  Indenture,  whether or not physically
contained herein.

SECTION 12.2      Communications by Holders with Other Holders.

         Securityholders  may communicate  pursuant to TIA ss. 312(b) with other
Securityholders  with  respect  to their  rights  under  this  Indenture  or the
Securities.  The Company,  the Trustee, the Registrar and anyone else shall have
the protection of TIA ss. 312(c).

SECTION 12.3      Governing Law.

         The  laws  of The  Commonwealth  of  Massachusetts  shall  govern  this
Supplement and the Securities without regard to principles of conflicts of law.

SECTION 12.4      No Adverse Interpretation of Other Agreements.

         This Supplement may not be used to interpret another indenture, loan or
debt agreement of the Company or a Subsidiary.  Any such indenture, loan or debt
agreement may not be used to interpret this Supplement.

SECTION 12.5      Successors.

         All covenants and agreements of the Company in this  Supplement and the
Securities shall bind its successors and assigns.  All agreements of the Trustee
in this Indenture shall bind its successors and assigns.

                                      -40-




<PAGE>




SECTION 12.6      Multiple Counterparts.

         The parties may sign multiple  counterparts  of this  Supplement.  Each
signed  counterpart  shall  be  deemed  an  original,  but all of them  together
represent the same agreement.

SECTION 12.7      Headings, etc.

         The headings of the Articles and Sections of this  Supplement have been
inserted for  convenience  of reference  only,  are not to be  considered a part
hereof,  and shall in no way modify or restrict  any of the terms or  provisions
hereof.

SECTION 12.8      Severability.

         In case any provision in this Supplement or in the Securities  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining  provisions shall not in any way be affected or impaired  thereby,
and a Holder shall have no claim therefor against any party hereto.


                                      -41-




<PAGE>




         IN WITNESS  WHEREOF,  the parties hereto have caused this Supplement to
be duly executed, all as of the date first written above.

                                      HEALTH AND RETIREMENT PROPERTIES TRUST
                                      a Maryland real estate investment trust



                                      By: /S/ Ajay Saini
                                Name: Ajay Saini
                               Title: Treasurer and Chief Financial Officer


                                      FLEET NATIONAL BANK,
                                        as Trustee



                                      By: /S/ Robert L. Bice II
                                Name: Robert L. Bice II
                               Title: Vice President

                                      




<PAGE>



                                    EXHIBIT A

                      (FORM OF FACE OF REGISTERED SECURITY)

            IF NECESSARY TO EFFECT COMPLIANCE BY THE COMPANY WITH THE
        REQUIREMENTS OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986,
        AS AMENDED, RELATING TO REAL ESTATE INVESTMENT TRUSTS, OWNERSHIP
           OF THE SECURITY REPRESENTED HEREBY MAY BE RESTRICTED BY THE
              COMPANY AND/OR THE TRANSFER HEREOF MAY BE PROHIBITED,
                 AS SET FORTH MORE FULLY ON THE REVERSE HEREOF.


                     HEALTH AND RETIREMENT PROPERTIES TRUST
               (Organized under the laws of the State of Maryland)
           7.5% CONVERTIBLE SUBORDINATED DEBENTURE DUE 2003, SERIES B
                                    CUSIP No.
                                 U.S.$_________


         Health and Retirement  Properties Trust, a real estate investment trust
duly  organized  and  existing  under  the laws of the  State of  Maryland  (the
"Company"),    for    value    received,    hereby    promises    to    pay   to
________________________, or  registered   assigns,   the   principal   sum   of
______________  United States dollars on October 1, 2003 upon  presentation  and
surrender  hereof and to pay  interest  thereon,  from the most recent  Interest
Payment Date (as defined below) to which interest has been paid or duly provided
for (or from October 7, 1996 if no interest  has been paid or duly  provided for
in respect of this  Security),  semiannually in arrears on April 1 and October 1
in each year (each an "Interest Payment Date"), commencing April 1, 1997, at the
rate of 7.5% per annum until the principal  hereof is paid or made available for
payment.  Interest  hereon  shall be  calculated  on the basis of a 360-day year
comprised of twelve 30-day months. The interest so payable,  and punctually paid
or duly  provided  for, on any Interest  Payment  Date will,  as provided in the
Indenture  (as  defined on the reverse  hereof),  be paid to the person in whose
name this Security is registered at the close of business on the Interest Record
Date for such interest payment, which shall be March 15 or September 15 (whether
or not a Business Day) next preceding such Interest  Payment Date. To the extent
lawful,  the  Company  shall pay  interest  on  overdue  principal  and  overdue
installments  of  interest  at the  rate  borne  by  this  Security,  compounded
semi-annually.  Except as otherwise provided in the Indenture, any such interest
not so punctually  paid or duly provided for will forthwith  cease to be payable
to the Holder on such Interest Record Date and, together with Defaulted Interest
relating  thereto,  may be paid at any time in any  lawful  manner,  all as more
fully provided in the  Indenture.  Payment of interest on this Security shall be
made by  United  States  dollar  check  drawn on a bank in the  City of  Boston,
Massachusetts or The City of New York and mailed to the person

                                       A-1




<PAGE>



entitled thereto at his address as it shall appear in the Security Register,  or
(if arrangements  satisfactory to the Company and the Trustee (as defined on the
reverse  hereof) are made) by wire transfer to a United  States  dollar  account
maintained by the payee with a bank in the City of Boston,  Massachusetts or The
City of New York; provided, however, that if such mailing is not possible and no
such application shall have been made,  payment of interest shall be made at the
Principal  Corporate  Trust  Office of the Trustee (as defined in the  Indenture
referred  to  below),  or such other  office or agency of the  Company as may be
designated for such purpose in the City of Boston,  Massachusetts or in The City
of New York in United States currency.

         Reference is hereby made to the  provisions  of this Security set forth
under  Terms and  Conditions  of the  Securities  on the reverse  hereof,  which
further  provisions  shall for all purposes have the same effect as if set forth
at this place.

         This  Security  shall not become valid or  enforceable  for any purpose
unless  and until the  certificate  of  authentication  hereon  shall  have been
manually signed by a duly authorized officer of the Trustee.

         IN WITNESS  WHEREOF,  the Company  has caused this  Security to be duly
executed in its  corporate  name and under its  corporate  seal by the manual or
facsimile signature of a duly authorized signatory.

                                       HEALTH AND RETIREMENT PROPERTIES TRUST


Dated:                                 By:  __________________________________
                                               Name:
                                               Title:

[Corporate Seal]



Attest: __________________________




                                       A-2




<PAGE>



CERTIFICATE OF AUTHENTICATION

This is one of the Securities described in the within mentioned Indenture.

                  FLEET NATIONAL BANK,
                           as Trustee

                  [By:  [NAME OF AUTHENTICATING AGENT, IF ANY],
                                as Authenticating Agent]*


                  By:   __________________________________
                               Authorized Officer

Dated:































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

*        To be included in lieu of the Trustee's signature if
         authentication to be performed by an Authenticating Agent
         appointed by the Trustee.

                                       A-3




<PAGE>



                        (FORM OF FACE OF BEARER SECURITY)

         ANY UNITED STATES PERSON WHO HOLDS THIS  OBLIGATION  WILL BE SUBJECT TO
LIMITATIONS  UNDER THE UNITED STATES INCOME TAX LAWS,  INCLUDING THE LIMITATIONS
PROVIDED IN SECTIONS  165(j) AND 1287(a) OF THE UNITED STATES  INTERNAL  REVENUE
CODE OF 1986, AS AMENDED.


            IF NECESSARY TO EFFECT COMPLIANCE BY THE COMPANY WITH THE
        REQUIREMENTS OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986,
        AS AMENDED, RELATING TO REAL ESTATE INVESTMENT TRUSTS, OWNERSHIP
           OF THE SECURITY REPRESENTED HEREBY MAY BE RESTRICTED BY THE
              COMPANY AND/OR THE TRANSFER HEREOF MAY BE PROHIBITED,
                 AS SET FORTH MORE FULLY ON THE REVERSE HEREOF.

                     HEALTH AND RETIREMENT PROPERTIES TRUST
               (Organized under the laws of the State of Maryland)
           7.5% CONVERTIBLE SUBORDINATED DEBENTURE DUE 2003, SERIES B
                            No. B ______ U.S.$_______

         Health and Retirement  Properties Trust, a real estate investment trust
duly  organized  and  existing  under  the laws of the  State of  Maryland  (the
"Company"),   for  value  received,  hereby  promises  to  pay  to  bearer  upon
presentation    and    surrender   of   this    Security   the   principal   sum
of_____________________________  United  States  dollars on October 1, 2003 upon
presentation and surrender hereof and to pay interest  thereon,  from October 7,
1996,  semiannually  in arrears  on April 1 and  October 1 in each year (each an
"Interest  Payment  Date"),  commencing  April 1, 1997,  at the rate of 7.5% per
annum until the principal hereof is paid or made available for payment. Interest
hereon shall be  calculated  on the basis of a 360-day year  comprised of twelve
30-day months.  To the extent lawful,  the Company shall pay interest on overdue
principal  and  overdue  installments  of  interest  of the  rate  borne by this
Security,  compounded semi-annually.  Payments in respect of this Security shall
be made by  United  States  dollar  check,  subject  to any laws or  regulations
applicable  thereto and to the right of the Company  (limited as provided in the
Indenture (as defined on the reverse  hereof)) to terminate the  appointment  of
any paying agency,  at The Chase Manhattan Bank,  London,  presently  located at
Woolgate House,  Coleman Street,  London EC2P 2HD, England (or such other office
in London  designated for the purpose by said  institution),  or Chase Manhattan
Bank Luxembourg S.A., presently located at 5 Rue Plaetis,  L-2338 Luxembourg (or
such other office in Luxembourg designated for the purpose by said institution),
or at such other offices or agencies  outside the United States of America,  its
territories or its  possessions  as the Company may designate,  by United States
dollar check drawn on a bank in the City of Boston, Massachusetts or The City of
New York, or (if  arrangements  satisfactory to the Company and the paying agent
in  Luxembourg  are made) by wire  transfer to a United  States  dollar  account
maintained by the Holder at a bank outside

                                       A-4




<PAGE>



the  United  States,  its  territories  and its  possessions.  Interest  on this
Security  shall be paid only at an office or agency  located  outside the United
States,  its territories or its possessions  and, in the case of interest due on
or before  maturity,  only upon  presentation and surrender at such an office or
agency of the interest  coupons  hereto  attached as they severally  mature.  No
payment on this Security or any coupon will be made at the  Principal  Corporate
Trust Office of the Trustee (as defined in the  Indenture  referred to below) or
any other paying agency maintained by the Company in the United States, nor will
any  payment be made by  transfer to an account in, or by mail to an address in,
the United  States,  except as may be  permitted  by United  States tax laws and
regulations  in  effect at the time of such  payment  without  detriment  to the
Company. Notwithstanding the foregoing, payment of this Security and coupons may
be made at the office of the  Trustee  in the city of Boston if full  payment at
all  paying  agencies  outside  the  United  States is  illegal  or  effectively
precluded by exchange controls or other similar restrictions.

         Reference is hereby made to the further provisions of this Security set
forth under Terms and Conditions of the Securities on the reverse hereof,  which
further  provisions  shall for all purposes have the same effect as if set forth
at this place.

         Neither  this  Security  nor any of the coupons  attached  hereto shall
become valid or enforceable  for any purpose unless and until the certificate of
authentication  hereon  shall  have been  manually  signed by a duly  authorized
officer of the Trustee.



                                       A-5




<PAGE>



         IN WITNESS  WHEREOF,  the Company  has caused this  Security to be duly
executed in its  corporate  name and under its  corporate  seal by the manual or
facsimile  signature  of a duly  authorized  officer  and  coupons  bearing  the
facsimile signature of a duly authorized signatory to be annexed hereto.

Dated: October 7, 1996

                                       HEALTH AND RETIREMENT PROPERTIES TRUST


                                       By:   __________________________________
                                             Name:
                                             Title:

[Corporate Seal]



Attest:   __________________________




                                       A-6




<PAGE>



CERTIFICATE OF AUTHENTICATION


This is one of the Securities described in the within-mentioned Indenture.

                  FLEET NATIONAL BANK,
                           as Trustee

                  [By:  [NAME OF AUTHENTICATING AGENT, IF ANY],
                                as Authenticating Agent]*


                  By:   __________________________________
                               Authorized Officer

Dated:





























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

*        To be included in lieu of the Trustee's signature if
         authenticating to be performed by an Authenticating Agent
         appointed by the Trustee.


                                       A-7




<PAGE>



                  (FORM OF FACE OF COUPON ON BEARER SECURITIES)

         ANY UNITED STATES PERSON WHO HOLDS THIS  OBLIGATION  WILL BE SUBJECT TO
LIMITATIONS  UNDER THE UNITED STATES INCOME TAX LAWS,  INCLUDING THE LIMITATIONS
PROVIDED IN SECTIONS  165(j) AND 1287(a) OF THE UNITED STATES  INTERNAL  REVENUE
CODE OF 1986, AS AMENDED.

            IF NECESSARY TO EFFECT COMPLIANCE BY THE COMPANY WITH THE
        REQUIREMENTS OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986,
        AS AMENDED, RELATING TO REAL ESTATE INVESTMENT TRUSTS, OWNERSHIP
           OF THE SECURITY REPRESENTED HEREBY MAY BE RESTRICTED BY THE
              COMPANY AND/OR THE TRANSFER HEREOF MAY BE PROHIBITED,
                 AS SET FORTH MORE FULLY ON THE REVERSE HEREOF.

                     HEALTH AND RETIREMENT PROPERTIES TRUST
               (Organized under the laws of the State of Maryland)
           7.5% CONVERTIBLE SUBORDINATED DEBENTURE DUE 2003, SERIES B
                     No. ________ U.S. $______ Due ________

         Unless the Bearer Security to which this coupon  appertains  shall have
been called for redemption prior to the due date hereof and payment thereof duly
provided for or shall have been  converted  (unless such date of  redemption  is
October 1 through and including October 4, 1999 and the due date hereof is on or
before October 1, 1999),  Health and Retirement  Properties Trust (herein called
the "Company") shall, subject to and in accordance with the terms and conditions
of the Bearer Security, the Indenture dated as of September 20, 1996 between the
Company  and Fleet  National  Bank,  as  Trustee,  and the  Second  Supplemental
Indenture  dated as of October 7, 1996  between the  Company and Fleet  National
Bank, as Trustee, pay to the bearer, on the date set forth herein upon surrender
hereof, the amount shown hereon (together with any Additional Amounts in respect
hereof  which the Company may be required to pay  according to the terms of said
Bearer Security) at the paying agencies set out on the reverse hereof or at such
other  places  outside the United  States of America,  its  territories  and its
possessions  as the Company may  determine  from time to time,  by United States
dollar check drawn on a bank in the City of Boston, Massachusetts or the City of
New York, or (if  arrangements  satisfactory to the Company and the paying agent
in  Luxembourg  are  made)  wire  transfer  to a United  States  dollar  account
maintained  by the bearer at a bank  outside the United  States of America,  its
territories and its possessions,  being one-half year's interest then payable on
said Bearer Security.

                                    HEALTH AND RETIREMENT PROPERTIES TRUST


                                    By:   __________________________________
                                          Name:
                                          Title:

                                       A-8




<PAGE>



                               [Reverse of Coupon]

The Chase Manhattan Bank, London                     Chase Manhattan Bank
Woolgate House                                          Luxembourg S.A.
Coleman Street                                       5 Rue Plaetis
London EC2P 2HD                                      L-2338 Luxembourg
England

                                       A-9




<PAGE>



              (FORM OF REVERSE OF REGISTERED AND BEARER SECURITIES)

                     Terms and Conditions of the Securities

1.       General.

         (a) This  Security is one of a duly  authorized  issue of securities of
the Company designated as its 7.5% Convertible Subordinated Debentures due 2003,
Series B (herein called the "Securities"), limited in aggregate principal amount
to U.S.  $149,500,000.  The Company  issued the  Securities  under an Indenture,
dated as of September 20, 1996,  between the Company and Fleet National Bank, as
trustee (the  "Trustee") as supplemented  by the Second  Supplemental  Indenture
dated as of October 7, 1996 by and between the Company and Fleet  National Bank,
as Trustee (as so supplemented,  the "Indenture").  Capitalized terms herein are
used as defined in the Indenture unless otherwise  defined herein.  The terms of
the Securities  include those stated in the Indenture and those made part of the
Indenture by reference to the United  States  Trust  Indenture  Act of 1939,  as
amended,  as in effect on the date of the Indenture.  The Securities are subject
to all such terms,  and Holders of Securities  are referred to the Indenture and
said Act for a statement of them. The  Securities  are unsecured  obligations of
the Company.

         (b) The  Securities  are  issuable as bearer  securities  (the  "Bearer
Securities"), with interest coupons attached, in the denominations of U.S.$1,000
and U.S.$10,000,  and as registered  securities (the  "Registered  Securities"),
without coupons,  in denominations of U.S.$1,000 and integral multiples thereof.
The  Registered  Securities,  and  transfers  thereof,  shall be  registered  as
provided in the Indenture.  The holder of any Bearer  Security or any coupon and
the  registered  holder of a Registered  Security  shall (to the fullest  extent
permitted by applicable law) be treated at all times, by all persons and for all
purposes,  except as provided in the  Indenture,  as the absolute  owner of such
Security or coupon,  as the case may be,  regardless of any notice of ownership,
theft or loss or of any writing thereon.

2.       Additional Amounts.

         The Company will pay, as additional interest ("Additional Amounts"), to
the Holder of this Security or of any coupon appertaining hereto who is a United
States  Alien (as defined  below) such amounts as may be necessary in order that
every net payment of the principal of and premium,  if any, and interest on this
Security and any cash  payments  made in lieu of issuing  shares of Common Stock
upon  conversion of this Security,  after  withholding  for or on account of any
present or future tax,  assessment or other governmental  charge imposed upon or
as a result of such payment by the United States or any political

                                      A-10




<PAGE>



subdivision or taxing  authority  thereof or therein,  will not be less than the
interest  provided herein or any coupon  appertaining  hereto to be then due and
payable;  provided,  however,  that the foregoing  obligation to pay  Additional
Amounts shall not apply to any one or more of the following:

         (a) any tax,  assessment or other  governmental  charge which would not
have  been so  imposed  but  for (i) the  existence  of any  present  or  former
connection  between such Holder (or between a fiduciary,  settlor,  beneficiary,
member or stockholder of, or a person holding a power over, such Holder, if such
Holder is an estate,  trust,  partnership or corporation) and the United States,
including,  without  limitation,  such  Holder  (or  such  fiduciary,   settlor,
beneficiary, member, stockholder or person holding a power) being or having been
a citizen or resident  or treated as a resident  thereof or being or having been
engaged in a trade or business or being or having been present therein or having
or having had a permanent  establishment  therein, (ii) such Holder's present or
former status as a personal holding  company,  foreign personal holding company,
passive foreign investment company,  foreign private foundation or other foreign
tax-exempt  entity or controlled  foreign  corporation for United States federal
income tax purposes or a corporation which accumulates  earnings to avoid United
States  federal  income tax, or (iii) such Holder's  status as a bank  extending
credit  pursuant to a loan  agreement  entered  into in the  ordinary  course of
business;

         (b) any tax,  assessment or other  governmental  charge which would not
have been so imposed but for the  presentation by the Holder of this Security or
any coupon appertaining hereto for payment on a date more than 15 days after the
date on  which  such  payment  became  due and  payable  or on the date on which
payment thereof is duly provided, whichever occurs later;

         (c) any estate, inheritance, gift, sales, transfer or personal or
intangible property tax or any similar tax, assessment or other governmental
charge;

         (d) any tax,  assessment or other  governmental  charge which would not
have been imposed but for the failure to comply with certification, information,
documentation  or  other  reporting  requirements  concerning  the  nationality,
residence,  identity or present or former  connection  with the United States of
the Holder or beneficial  owner of this  Security or any related  coupon if such
compliance is required by statute,  regulation or ruling of the United States or
any  political   subdivision  or  taxing  authority  thereof  or  therein  as  a
precondition  to  relief  or  exemption  from  such  tax,  assessment  or  other
governmental charge;

         (e)      any tax, assessment or other governmental charge which
is payable otherwise than by deduction or withholding from

                                      A-11




<PAGE>



payments of principal of and premium, if any, or interest on this
Security;

         (f) any  tax,  assessment  or  other  governmental  charge  imposed  on
interest received by a person holding,  actually or constructively,  10% or more
of the  total  combined  voting  power of all  classes  of stock of the  Company
entitled to vote; or

         (g) any tax,  assessment or other  governmental  charge  required to be
withheld by any paying agent from any payment of  principal  of and premium,  if
any, or interest on any Security or interest on any coupon appertaining  thereto
if such payment can be made without such withholding by any other paying agent;

nor  shall  Additional  Amounts  be paid  with  respect  to any  payment  of the
principal of or premium,  if any, or interest on this  Security (or cash in lieu
of issuance of shares of Common Shares upon  conversion)  to a person other than
the sole beneficial  owner of such payment or that is a partnership or fiduciary
to the extent such beneficial  owner,  member of such partnership or beneficiary
or settlor with respect to such  fiduciary  would not have been  entitled to the
payment of Additional Amounts had such beneficial owner, member,  beneficiary or
settlor been the holder of this Security or any coupon appertaining  hereto. The
term  "United  States  Alien" means any person who,  for United  States  federal
income tax purposes,  is (i) a foreign  corporation,  (ii) a foreign partnership
one or more of the members of which are, for United  States  federal  income tax
purposes,  foreign corporations,  non-resident alien individuals or non-resident
alien  fiduciaries  of a foreign  estate or trust,  (iii) a  non-resident  alien
individual or (iv) a non-resident  alien fiduciary of a foreign estate or trust,
and the term "United  States" means the United States of America  (including the
several States and the District of Columbia),  its territories,  its possessions
and other areas subject to its  jurisdiction.  Except as  specifically  provided
herein and in the  Indenture,  the  Company  shall not be  required  to make any
payment with respect to any tax, assessment or other governmental charge imposed
by any government or any political  subdivision or taxing  authority  thereof or
therein.  Whenever any Additional Amounts are to be paid on the Securities,  the
Company will give notice to the Trustee and any paying  agencies of the Company,
all as provided in the Indenture.

3.       Redemption.

         (a) The Company, at its option, may redeem the Securities,  in whole or
in part (but if in part, in aggregate principal amounts of no less than $1,000),
(i) at any time or times on and after  October 1,  1999,  or (ii) in whole or in
part prior to October  1, 1999 as  necessary  for the  Company  to  continue  to
qualify as a real estate  investment  trust  ("REIT") under Sections 856 through
860 of the United States Internal Revenue Code of

                                      A-12



                                                      

<PAGE>



1986,  as amended (the  "Code"),  upon notice as  hereinafter  prescribed,  at a
redemption price equal to 100% of their principal  amount thereof,  plus accrued
and unpaid interest to the date fixed for redemption.

         (b) The Company may also, at its option,  redeem the  Securities to the
extent,  but only to the extent,  deemed  necessary  by its Board of Trustees to
prevent the Holder of such  Securities  or any other  person  having an interest
therein  (if the  Securities  were  thereupon  converted)  from being  deemed to
beneficially own,  directly or indirectly,  8.5% or more in value of the Capital
Stock (as defined in the Indenture) of the Company.  For purposes of determining
a Person's  beneficial  ownership of Capital Stock, the Securities  beneficially
owned by such Person  will be deemed  converted  and added to the Capital  Stock
beneficially owned by such Person. For purposes of this paragraph, Capital Stock
not owned  directly  shall be deemed to be owned  indirectly by a Holder if that
Holder or a group  including that Holder would be the  beneficial  owner of such
Capital  Stock,  as defined as of May 1, 1995, in Rule 13d-3  promulgated by the
United States Securities and Exchange  Commission under the Securities  Exchange
Act of 1934, as amended, and/or would be considered to own such Capital Stock by
reason of the  attribution  rules of Section 544 or Section  856(h) of the Code.
Securities  redeemed  pursuant  to this  paragraph  (b) shall be  redeemed  at a
redemption price equal to 100% of the principal amount thereof, plus accrued and
unpaid interest to the date fixed for redemption.

         (c) If, at any time,  the Company shall  determine  that as a result of
any  change  in or  amendment  to  the  laws  (or  any  regulations  or  rulings
promulgated  thereunder)  of the United States or any political  subdivision  or
taxing authority thereof or therein affecting  taxation,  or any amendment to or
change in an official application or interpretation of such laws, regulations or
rulings which change or amendment  becomes effective on or after October 7, 1996
the Company has or will become obligated to pay to the holder of any Security or
coupon  Additional  Amounts and such obligation cannot be avoided by the Company
taking  reasonable  measures  available  to it,  then the  Company  may,  as its
election  exercised at any time when such conditions  continue to exist,  redeem
such  Securities  as a  whole  but  not in  part,  upon  notice  as  hereinafter
prescribed,  at a  redemption  price  equal  to  100% of the  principal  amount,
together  with  accrued  interest,  if any,  to the date  fixed for  redemption;
provided that no such notice of  redemption  shall be given earlier than 90 days
prior to the earliest  date on which the Company  would be obligated to pay such
Additional  Amounts were a payment in respect of such  Securities  then due; and
provided further,  that at the time such notice is given, such obligation to pay
such  Additional  Amounts  remains in  effect.  Prior to any  redemption  of the
Securities pursuant to this paragraph (c), the

                                      A-13



                                                       
<PAGE>



Company shall provide the Trustee with one or more  certificates  of the Company
on which the  Trustee  may  conclusively  rely to the effect that the Company is
entitled  to redeem such  Securities  pursuant  to such  paragraph  and that the
conditions  precedent  to the right of the  Company  to redeem  such  Securities
pursuant to such paragraph  have occurred and a written  Opinion of Counsel (who
may be an employee of the Company) stating that all legal  conditions  precedent
to the right of the Company to redeem such Securities pursuant to this paragraph
(c) have occurred.

         (d) The  Company  shall,  except  as set  forth in the next  succeeding
paragraph,  redeem the Bearer Securities as a whole but not in part, upon notice
as hereinafter  prescribed,  at 100% of their  principal  amount,  together with
interest  accrued and unpaid to the date fixed for  redemption,  less applicable
withholding taxes, if any, plus any applicable Additional Amounts payable, after
the  Company  determines,  based  on a  written  Opinion  of  Counsel,  that any
certification,  identification  or  information  reporting  requirement  of  any
present  or  future  United  States  law  or  regulation   with  regard  to  the
nationality, residence or identity of a beneficial owner of a Bearer Security or
a coupon  appertaining  thereto who is a United States Alien would be applicable
to a payment  of  principal  of or  interest  on a Bearer  Security  or a coupon
appertaining  thereto made outside the United  States by the Company or a paying
agent (other than a  requirement  (i) which would not be applicable to a payment
made  by the  Company  or any  one of its  paying  agents  (A)  directly  to the
beneficial owner or (B) to a custodian, nominee or other agent of the beneficial
owner,  or (ii) which could be  satisfied by the Holder,  custodian,  nominee or
other agent  certifying  that the  beneficial  owner is a United  States  Alien,
provided,  however,  in each case referred to in clauses (i)(B) and (ii) payment
by such  custodian,  nominee or agent of the  beneficial  owner is not otherwise
subject to any requirement referred to in this sentence). The Company shall make
such  determination  and will notify the  Trustee  thereof in writing as soon as
practicable,  stating in the notice the  effective  date of such  certification,
identification,  or information reporting requirement and the dates within which
the redemption  shall occur, and the Trustee shall give prompt notice thereof in
accordance  with the Indenture.  The Company shall determine the Redemption Date
by notice to the Trustee at least 75 days  before the  Redemption  Date,  unless
shorter is acceptable to the Trustee.  Such  redemption of the  Securities  must
take place on such date,  not later than one year after the  publication  of the
initial  notice  of  the  Company's  determination  of  the  existence  of  such
certification,  identification or information reporting requirement. The Company
shall not so redeem the Bearer Securities,  however, if the Company shall, based
on a subsequent  event,  determine,  based on a written  Opinion of Counsel (who
shall not be an  employee  of the  Company),  not less than 30 days prior to the
date fixed for redemption, that no such payment

                                      A-14



                                                       
<PAGE>



would be subject to any requirement  described  above, in which case the Company
shall notify the Trustee,  which shall give prompt notice of that  determination
in  accordance  with the  Indenture  and any  earlier  redemption  notice  shall
thereupon be revoked and of no further effect.

         Notwithstanding  the  preceding  paragraph,  if  and  so  long  as  the
certification,  identification or information  reporting requirement referred to
in the preceding  paragraph would be fully satisfied by payment of United States
withholding,  backup  withholding or similar taxes, the Company may elect, prior
to the  giving  of the  notice of  redemption,  to have the  provisions  of this
paragraph  apply in lieu of the provisions of the preceding  paragraph.  In that
event,  the Company will pay such Additional  Amounts  (without regard to clause
(d) of Section 2 hereof) as are necessary in order that, following the effective
date of such  requirements,  every net payment made outside the United States by
the  Company or a paying  agent of the  principal  of and  interest  on a Bearer
Security  or a coupon  appertaining  thereto to a Holder who is a United  States
Alien  (without  regard  to  a  certification,   identification  or  information
reporting  requirement  as to the  nationality,  residence  or  identity of such
Holder),  after deduction for United States  withholding,  backup withholding or
similar taxes (other than withholding,  backup  withholding or similar taxes (i)
which  would  not  be  applicable  in  the  circumstances  referred  to  in  the
parenthetical  clauses of the first sentence of the next preceding  paragraph or
(ii) are imposed as a result of  presentation  of such Bearer Security or coupon
for payment more than 10 days after the date on which such  payment  becomes due
and payable or on which  payment  thereof is duly  provided  for,  whichever  is
later),  will not be less than the amount provided in the Bearer Security or the
coupon to be then due and payable.  If the Company elects to pay such Additional
Amounts  and as long as it is  obligated  to pay such  Additional  Amounts,  the
Company may subsequently redeem the Bearer Securities, at any time, in whole but
not in part,  upon not more than 60 days nor less than 30 days notice,  given as
hereinafter prescribed, at 100% of their principal amount, plus accrued interest
to the date fixed for redemption and Additional Amounts, if any.

         (e) The  Company may at any time buy  Securities  on the open market at
prices which may be greater or less than the redemption prices set forth herein.

         (f) If  fewer  than all of the then  outstanding  Securities  are to be
redeemed,  the  Securities  to be  redeemed  will be  selected by the Trustee as
provided  in the  Indenture  by such  method  as the  Trustee  may deem fair and
appropriate,  except as  otherwise  set forth in  paragraphs  (b) and (c) above.
Provisions of this Security that apply to Securities called for redemption shall
also apply to portions of Securities called for redemption.

                                      A-15



                                                       
<PAGE>



         (g) If notice of  redemption  has been given in the manner set forth in
the  Indenture  with respect to  Securities  to be redeemed at the option of the
Company,  the  Securities so to be redeemed  shall become due and payable on the
applicable  Redemption Date specified in such notice and upon  presentation  and
surrender of the Securities at the place or places specified in the notice given
by the Company with respect to such  redemption,  together in the case of Bearer
Securities  with all appurtenant  coupons,  if any,  maturing  subsequent to the
Redemption  Date, the Securities  shall be paid and redeemed by the Company,  at
the places and in the manner and currency herein specified and at the Redemption
Price together with accrued interest,  if any, to the Redemption Date; provided,
however,  that  interest  due in respect of coupons  maturing on or prior to the
Redemption  Date shall be payable only upon the  presentation  and  surrender of
such  coupons (at an office or agency  located  outside of the United  States of
America). If any Bearer Security surrendered for redemption shall be accompanied
by all appurtenant coupons maturing after the Redemption Date, such Security may
be paid after deducting from the amount otherwise payable an amount equal to the
face amount of all such missing coupons, or the surrender of such missing coupon
or coupons may be waived by the  Company  and the  Trustee or a paying  agent if
they are  furnished  with such security or indemnity as they may require to save
each of them and each other  paying  agency of the  Company  harmless.  From and
after the Redemption Date, if monies for the redemption of Securities shall have
been available at the principal  corporate trust office of the Trustee or at the
office  of any  paying  agent  (other  than the  Company  or a  Subsidiary)  for
redemption on the Redemption  Date, the Securities shall cease to bear interest,
the coupons for interest  appertaining to Bearer Securities  maturing subsequent
to the Redemption  Date shall be void, and the only right of the holders of such
Securities  shall be to receive  payment of the  Redemption  Price together with
accrued  interest to the  Redemption  Date. If monies for the  redemption of the
Securities  are not made  available  by the Company for payment  until after the
Redemption  Date,  the  Securities  shall not cease to bear interest  until such
monies have been so made available.

4.       Conversion.

         (a)  Subject  to  and  upon  compliance  with  the  provisions  of  the
Indenture, a holder of Securities is entitled, at its option, at any time on and
after the Exchange Date and prior to the close of business on October 1, 2003 to
convert such Security (or any portion of the principal  amount  thereof which is
U.S.$1,000 or an integral multiple thereof), at the principal amount thereof, or
of such portion,  into fully paid and nonassessable  common shares  ("Conversion
Shares") of beneficial interest, par value $0.01 per share ("Common Shares"), of
the Company at a  Conversion  Price  equal to U.S.  $18.00  aggregate  principal
amount of Securities for

                                      A-16



                                                       
<PAGE>



each  Conversion  Share (the  "Conversion  Price") (or at the  current  adjusted
Conversion Price if an adjustment has been made as provided herein) by surrender
of the Security,  together with (i) if a Bearer Security,  all unmatured coupons
(except that any Bearer  Security called for redemption on October 1 through and
including  October 4, 1999 need not be delivered with the coupon that matures on
October 1, 1999) and any matured  coupons in default  appertaining  thereto,  or
(ii) if a  Registered  Security (if so required by the Company or the Trustee or
the agencies set forth below),  instruments of transfer in form  satisfactory to
the Company and the Trustee or the agencies set forth  below,  duly  executed by
the registered holder or by his duly authorized  attorney,  and, in either case,
(iii) the Conversion Notice hereon duly executed (x) at the Principal  Corporate
Trust Office of the Trustee, or at such other office or agency of the Company as
may be designated by it for such purpose in the City of New York, or (y) subject
to any laws or  regulations  applicable  thereto and subject to the right of the
Company to terminate the appointment of any such conversion agency, at The Chase
Manhattan Bank,  London,  presently  located at Woolgate House,  Coleman Street,
London  EC2P 2HD,  England  and Chase  Manhattan  Bank  Luxembourg  S.A.,  5 Rue
Plaetis, L-2338 Luxembourg,  or at such other offices or agencies as the Company
may designate;  provided,  however, that if any Security or a portion thereof is
called for  redemption by the Company,  then in respect of such Security (or, in
the case of partial  redemption by the Company,  such portion thereof) the right
to convert such Security (or, in the case of partial  redemption by the Company,
such portion  thereof) shall expire  (unless the Company  defaults in making the
payment due upon redemption) at the close of business on the Redemption Date.

         (b) In the case of any Registered Security which is converted after any
Interest  Record Date and on or prior to the next  succeeding  Interest  Payment
Date, interest that is payable on such Interest Payment Date shall be payable on
such Interest Payment Date  notwithstanding  such conversion,  and such interest
shall be paid to the person in whose name that Registered Security is registered
at the close of business  on such  Interest  Record  Date.  Except as  otherwise
provided in the immediately  preceding sentence and in the parenthetical  clause
in  Section  4(a)(i)  above,  no payment  or  adjustment  shall be made upon any
conversion on account of any interest accrued on the Securities  surrendered for
conversion or on account of any  dividends or  distributions  on the  Conversion
Shares issued upon conversion.  Registered Securities surrendered for conversion
during the period after the close of business on any  Interest  Record Date next
preceding  any Interest  Payment Date to the close of business on such  Interest
Payment Date shall be  accompanied by payment of an amount equal to the interest
payable on such Interest Payment Date on the principal amount being  surrendered
for conversion (except in the case of Registered  Securities or portions thereof
which are called for redemption on October 1 through and

                                      A-17



                                                       
<PAGE>



including  October 4, 1999, which need not be accompanied by the payment of such
amount in respect of the October 1, 1999 Interest Payment Date). No fractions of
shares or script representing fractions of shares will be issued or delivered on
conversion,  but instead of any fractional interest the Company shall pay a cash
adjustment as provided in the Indenture.

         (c) (i) In case at any time the Company shall pay or make a dividend or
other  distribution  on any  class of  capital  stock of the  Company  in Common
Shares,  the  Conversion  Price in effect at the  opening of business on the day
following  the date fixed for the  determination  of  stockholders  entitled  to
receive such  dividend or other  distribution  shall be reduced so that the same
shall equal the price  determined  by  multiplying  such  Conversion  Price by a
fraction of which the  numerator  shall be the number of shares of Common Shares
outstanding  at the close of business  on the date fixed for such  determination
and the  denominator  shall be the sum of such  number of  shares  and the total
number  of  shares  of  Common  Shares   constituting  such  dividend  or  other
distribution,  such adjustment to become effective immediately after the opening
of business on the day following the date fixed for such  determination;  and in
the event that such dividend or other distribution is not so made, or is made in
part,  the Conversion  Price shall again be adjusted to be the Conversion  Price
which would then be in effect (i) if such record date has not been fixed or (ii)
based on the actual number of shares actually issued, as the case may be.

         (ii)  In  case  at  any  time  the  Company  shall  (A)  subdivide  its
outstanding  Common  Shares  into a greater  number of shares,  (B)  combine its
outstanding  Common  Shares  into a smaller  number of  shares,  or (C) issue by
reclassification  of its Common Shares (including any such  reclassification  in
connection with a consolidation or merger in which the Company is the continuing
corporation)  any shares of capital stock, the Conversion Price in effect at the
effective date of such  subdivision,  combination or  reclassification  shall be
proportionately  adjusted  so that the holder of any  Security  surrendered  for
conversion after such time shall be entitled to receive the aggregate number and
kind of shares which, if such Security had been converted  immediately  prior to
such time, he would have owned upon such conversion and been entitled to receive
upon such subdivision,  combination or  reclassification.  Such adjustment shall
become  effective  immediately  after the  effective  date of such  subdivision,
combination or  reclassification.  Such  adjustment  shall be made  successively
whenever any event listed above shall occur.

         (iii) In case at any time the  Company  shall fix a record date for the
issuance of rights,  options or  warrants  to all  holders of its Common  Shares
entitling  them to  subscribe  for or  purchase  Common  Shares  (or  securities
convertible  into  Common  Shares)  at a price per share  less than the  current
market price

                                      A-18



                                                       
<PAGE>



per share of Common Shares on such record date, the  Conversion  Price in effect
at the  opening of  business  on the day  following  such  record  date shall be
reduced so that the same shall equal the price  determined by  multiplying  such
Conversion  Price by a fraction  of which the  numerator  shall be the number of
shares of Common Shares outstanding at the close of business on such record date
plus the number of Common Shares (or its equivalent)  which the aggregate of the
offering  price of the total  number of shares so offered  for  subscription  or
purchase  would purchase at such current market price per share of Common Shares
and the denominator  shall be the number of shares of Common Shares  outstanding
at the close of business on such record date plus the number of shares of Common
Shares (or its  equivalent)  so  offered  for  subscription  or  purchase,  such
reduction to become effective  immediately  after the opening of business on the
day following  such record date;  provided,  however,  that no adjustment to the
Conversion Price shall be made pursuant to this Section 4(c)(iii) if the holders
of Securities  receive, or are entitled to receive upon conversion or otherwise,
the same  rights,  options or  warrants  as are issued to the  holders of Common
Shares, on the same terms and conditions as such rights, options or warrants are
so  issued  to the  holders  of  Common  Shares.  Such  reduction  shall be made
successively  whenever  such a record date is fixed;  and in the event that such
rights,  options or warrants  are not so issued,  or are issued in part,  or are
issued but all or part of which expire  unexercised,  the Conversion Price shall
again be adjusted to be the  Conversion  Price which would then be in effect (i)
if such  record  date had not been fixed or (ii)  based on the actual  number of
rights, options or warrants actually issued, as the case may be.

         (iv) In case at any time the  Company  shall fix a record  date for the
making of a distribution, by dividend or otherwise, to all holders of its Common
Shares,  of shares of beneficial  interest in  Hospitality  Properties  Trust, a
Maryland  real  estate  investment  trust  ("HPT"),  then in each  such case the
Conversion  Price in effect  after  such  record  date  shall be  determined  by
multiplying the Conversion Price in effect immediately prior to such record date
by a fraction,  of which the numerator  shall be the total number of outstanding
Common Shares  multiplied by the current market price per share of Common Shares
on such  record  date,  less the fair  market  value (as  determined  by a Board
Resolution, whose determination shall be conclusive and described in a statement
filed with the Trustee) of shares of beneficial  interest so to be  distributed,
and of which the  denominator  shall be the total number of  outstanding  Common
Shares  multiplied by such current market price per share of Common Stock.  Such
adjustment shall be made  successively  whenever such a record date is fixed and
shall become effective  immediately  after the record date for the determination
of stockholders entitled to receive the distribution; and in the event that such
distribution is not so made, the Conversion  Price shall again be adjusted to be
the

                                      A-19



                                                       
<PAGE>



Conversion  Price which would then be in effect if such record date has not been
fixed.

         (v) For the purpose of any computation  under paragraphs (iii) and (iv)
for this Section, the current market price per Common Share on any date shall be
deemed to be the average of the Closing Prices (as defined in the Indenture) for
the 15  consecutive  Business Days selected by the Company  commencing  not more
than 30 and not less than 20 Business Days before the date in question.

         (vi) No adjustment  in the  conversion  price shall be required  unless
such  adjustment  (plus any  adjustments  not previously  made by reason of this
paragraph  (vi))  would  require an  increase or decrease of at least 1% in such
price; provided, however, that any adjustments which by reason of this paragraph
(vi) are not required to be made shall be carried forward and taken into account
in any subsequent  adjustment.  All calculations under this paragraph (vi) shall
be made to the nearest cent.

         (vii)  The  Company  may,  but  shall  not be  required  to,  make such
reductions in the conversion  price,  in addition to those required by paragraph
(i),  (ii),  (iii) and (iv) of this section as the Company's  Board of Directors
considers  to be  advisable  in order to avoid or diminish any income tax to any
holders of Common Shares resulting from any dividend or distribution of stock or
issuance of rights or warrants  to purchase or  subscribe  for stock or from any
event  treated as such for income tax  purposes  or for any other  reasons.  The
Board of Directors  shall have the power to resolve any ambiguity or correct any
error in the  adjustments  made  pursuant to this  section and its actions in so
doing shall be final and conclusive.

         (viii)  The  adjustments  provided  for in this  section  shall be made
successively whenever any event listed above shall occur.

         (d)  Whenever  the  Conversion  Price is  adjusted  and in the event of
certain other  corporate  actions,  as herein  provided,  the Company shall give
notice, all as provided in the Indenture.



                                      A-20



                                                       
<PAGE>



5.       Transfer and Exchange of Securities.

         (a) Title to Bearer  Securities and coupons shall pass by delivery.  As
provided in the Indenture and subject to certain  limitations therein set forth,
the transfer of Registered  Securities is registrable  on the Security  Register
upon  surrender of a Registered  Security  for  registration  of transfer at the
office  or agency  of the  Trustee  in the City of  Boston,  Massachusetts,  or,
subject  to  applicable  laws and  regulations,  at the  office of the  transfer
agencies in London or Luxembourg,  duly endorsed by, or accompanied by a written
instrument of transfer in the form  satisfactory  to the Company and the Trustee
or such transfer  agencies  duly executed by the holder  thereof or his attorney
duly authorized in writing, and thereupon one or more new Registered Securities,
of authorized denominations and for the same aggregate principal amount, will be
issued to the designated transferee or transferees.

         (b) As provided  in the  Indenture  and subject to certain  limitations
therein set forth,  Bearer Securities (with all unmatured  coupons  appertaining
thereto) are exchangeable  at, subject to applicable laws and  regulations,  the
offices of the paying  agencies in London and Luxembourg or as designated by the
Company for such  purpose  pursuant  to the  Indenture,  for an equal  aggregate
principal amount of Registered Securities and/or Bearer Securities of authorized
denominations,  and  Registered  Securities  are  exchangeable  at the principal
corporate trust office of the Trustee in the City of Boston,  Massachusetts  or,
subject to applicable laws and regulations, the offices of the transfer agencies
in London and  Luxembourg  or as  designated  by the  Company  for such  purpose
pursuant to the Indenture, for an equal aggregate principal amount of Registered
Securities of authorized  denominations as requested by the Holder  surrendering
the same.  Registered Securities will not be exchangeable for Bearer Securities.
The  Company  shall  not be  required  (i) to  exchange  Bearer  Securities  for
Registered  Securities  during the period  between  the close of business on any
Interest Record Date and the opening of business on the next succeeding Interest
Payment Date,  (ii) to exchange any Bearer  Security (or portion  thereof) for a
Registered  Security if the Company  shall  determine  and inform the Trustee in
writing that, as a result  thereof,  the Company may incur adverse  consequences
under  the  federal  income  tax  laws  and  regulations   (including   proposed
regulations)  of the  United  States in effect or  proposed  at the time of such
exchange,  or (iii) in the event of a  redemption  in part,  (A) to register the
transfer  of  Registered   Securities  or  to  exchange  Bearer  Securities  for
Registered  Securities during a period of 15 days immediately preceding the date
notice is given identifying the serial numbers of the Securities called for such
redemption;  (B) to register  the  transfer of or exchange  any such  Registered
Securities,  or portion thereof,  called for redemption;  or (C) to exchange any
such Bearer Securities called for redemption; provided, however,

                                      A-21



                                                       
<PAGE>



that a Bearer  Security  called for redemption may be exchanged for a Registered
Security  which is  simultaneously  surrendered,  with written  instruction  for
payment on the Redemption Date,  unless the Redemption Date is during the period
between  the close of  business  on any  Interest  Record  Date and the close of
business  on the next  succeeding  Interest  Payment  Date,  in which  case such
exchange may only be made prior to the close of business on the Interest  Record
Date  immediately  preceding the Redemption  Date. The Company also shall not be
required to exchange Securities if, as a result thereof, the Company would incur
adverse  consequences  under United States  federal income tax laws in effect at
the  time of such  exchange.  In the  event of  redemption  or  conversion  of a
Registered  Security in part only, a new  Registered  Security or Securities for
the unredeemed or  unconverted  portion hereof will be issued in the name of the
holder thereof.

         (c) The costs and expenses of effecting any exchange or registration of
transfer  pursuant  to the  foregoing  provisions,  except for the  expenses  of
delivery (if any) by other than regular mail and except, if the Company shall so
require,  the payment of a sum sufficient to cover any tax or other governmental
charge or  insurance  charges that may be imposed in relation  thereto,  will be
borne by the Company.

         (d) The Company has initially  appointed the Trustee as transfer agent,
paying  agent and  conversion  agent  acting  through  the  Trustee's  principal
corporate  trust  office in the City of Boston,  Massachusetts.  The Company has
initially  appointed The Chase  Manhattan  Bank,  London,  presently  located at
Woolgate House,  Coleman Street,  London EC2P 2HD, England, as the registrar and
as a transfer agent, paying agent and conversion agent. In addition, the Company
has initially appointed Chase Manhattan Bank Luxembourg S.A.,  presently located
at 5, rue Plaetis  L-2338,  Luxembourg,  as a transfer  agent,  paying agent and
conversion  agent.  The Company may at any time terminate the appointment of the
registrar and such agents and appoint  additional or other registrars and agents
or approve  any change in an office  through  which the  registrar  or any agent
acts;  provided  that,  until all of the  Securities  have been delivered to the
Trustee for  cancellation,  or monies sufficient to pay the Securities have been
made  available  for  payment  and either  paid or  returned  to the  Company as
provided in the Securities and the Indenture, the Company will maintain a paying
agent and a  conversion  agent (i) in The City of Boston or The City of New York
in the United States for the payment of the principal and interest on Registered
Securities  and for the surrender of Securities for conversion or redemption and
(ii) in a  European  city  that,  so long as the  Securities  are  listed on the
Luxembourg  Stock  Exchange  and  such  exchange  shall  so  require,  shall  be
Luxembourg,  for the payment of the principal and interest on Securities and for
the surrender of Securities for conversion or redemption.


                                      A-22



                                                       
<PAGE>



6.       Meetings of Holders.

         A meeting of Holders of  Securities  may be called at any time and from
time to time in the manner and for the purposes set forth in the Indenture.  The
Trustee may at any time call a meeting of Holders of the  Securities  to be held
at such  time  and at such  place  in any of such  designated  locations  as the
Trustee  shall  determine.  Notice of every  meeting of Holders shall be made as
specified in the Indenture.

7.       Amendment; Supplement; Waiver.

         Subject to certain  exceptions,  the Indenture or the Securities may be
amended  or  supplemented,  and any  existing  Default  or Event of  Default  or
compliance  with any  provision may be waived,  with the written  consent of the
Holders of a majority  in  aggregate  principal  amount of the  Securities  then
outstanding. Without notice to or consent of any Holder, the parties thereto may
amend or supplement the Indenture or the Securities to, among other things, cure
any ambiguity,  defect or inconsistency,  or make any other change that does not
adversely affect the rights of any Holder of a Security.

8.       Subordination.

         PAYMENT OF  PRINCIPAL,  PREMIUM,  IF ANY,  INTEREST  ON AND  ADDITIONAL
AMOUNTS WITH RESPECT TO THE SECURITIES IS SUBORDINATED, IN THE MANNER AND TO THE
EXTENT SET FORTH IN THE  INDENTURE,  TO THE PRIOR  PAYMENT IN FULL OF ALL SENIOR
INDEBTEDNESS.

9.       Successors.

         Except as otherwise provided in the Indenture, when a successor assumes
all the obligations of its  predecessor  under the Securities and the Indenture,
the predecessor will be released from those obligations.

10.      Defaults and Remedies.

         If an Event of Default occurs and is continuing (other than an Event of
Default relating to certain events of bankruptcy,  insolvency or  reorganization
in which events all principal,  accrued interest and Additional Amounts, if any,
with respect to the Securities  will be immediately  due and payable without any
declaration  or other act on the part of the  Trustee or the  Holders),  then in
every  such case,  unless  the  principal  of all of the  Securities  shall have
already  become due and  payable,  either the Trustee or the Holders of not less
than a majority in aggregate principal amount of Securities then outstanding may
declare all the  Securities to be due and payable  immediately in the manner and
with the effect provided in the Indenture.

                                      A-23



                                                       
<PAGE>



Holders of Securities may not enforce the Indenture or the Securities  except as
provided in the Indenture.  The Trustee may require indemnity satisfactory to it
before  it  enforces  the  Indenture  or  the  Securities.  Subject  to  certain
limitations,  Holders  of a  majority  in  aggregate  principal  amount  of  the
Securities then  outstanding may direct the Trustee in its exercise of any trust
or power.  The Trustee may  withhold  from Holders of  Securities  notice of any
continuing  Default  or Event  of  Default  (except  a  Default  in  payment  of
principal,  interest or Additional  Amounts),  if it determines that withholding
notice is in their interest.

11.      Trustee Dealings with the Company.

         Fleet  National  Bank,  the Trustee  under the  Indenture and any agent
under the Indenture, in its individual or any other capacity, may make loans to,
accept  deposits from, and perform  services for the Company or its  affiliates,
and may  otherwise  deal with the Company or its  affiliates,  as if it were not
Trustee or an agent.

12.      No Personal Liability.

         THE AMENDED AND RESTATED  DECLARATION  OF TRUST OF 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.

13.      Non-Business Days.

         In any case where the date of maturity of the  principal of or interest
on (or Additional  Amounts,  if any, with respect thereto) the Securities or the
date fixed for redemption of any Security shall be at any place of payment a day
other than a Business Day, then payment of principal or interest (or  Additional
Amounts,  if any) need not be made on such date at such place but may be made on
the next succeeding  Business Day at such place of payment,  with the same force
and effect as if made on the date of maturity or the date fixed for  redemption,
and no interest shall accrue for the period after such date.

14.      Notices.


                                      A-24



                                                       
<PAGE>



         All  notices  to the  Holders  of  Securities  will be  published  on a
Business  Day in  Authorized  Newspapers  in The City of New York and in London,
and, as long as the Securities are listed on the Luxembourg  Stock Exchange,  in
an Authorized  Newspaper in Luxembourg,  or, if either  publication in London or
Luxembourg  is not  practical,  in an  Authorized  Newspaper in Western  Europe.
Notices  shall be  deemed  to have  been  given on the  date of  publication  as
aforesaid  or, if published on  different  dates,  on the date of the first such
publication.  A copy of each notice will be mailed by the Trustee,  on behalf of
and at the  expense of the  Company,  by  first-class  mail to each  holder of a
Registered  Security at the registered  address of such holder as the same shall
appear in the Security  Register on the day fifteen days prior to such  mailing.
The Trustee shall  promptly  furnish to the Company and each paying agent of the
Company a copy of each notice so published or mailed.

15.      Governing Law.

         The Indenture,  this Security and any coupons appertaining hereto shall
be governed by and construed in accordance with the laws of the  Commonwealth of
Massachusetts,  United  States  of  America,  without  regard to  principles  of
conflicts of laws.

16.      Authentication.

         This  Security  and any coupon  appertaining  thereto  shall not become
valid or obligatory  for any purpose  until the  certificate  of  authentication
hereon  shall have been duly  signed by the Trustee or an  authenticating  agent
acting under the Indenture.

17.      Warranty of the Issuer.

         Subject to Section 15 hereof, the Company hereby certifies and warrants
that all acts,  conditions  and things  required to be done and performed and to
have  happened  precedent to the creation and issuance of this  Security and any
coupons  appertaining  thereto,  and to  constitute  the same  legal,  valid and
binding  obligations of the Company  enforceable in accordance with their terms,
have been done and performed and have happened in due and strict compliance with
all applicable laws.

18.      Status as United States Real Property Holding Corporation.

         To the best of its  knowledge,  as of the date of the  issuance of this
Security, the Company is not a "United States real property holding corporation"
as defined in Section  897(c)(2) of the United States  Internal  Revenue Code of
1986, as amended (the  "Code").  A non-United  States  person  disposing of this
Security may request  from the Company a statement  as to whether this  Security
constitutes a "United States real property interest" (as defined in Code Section
897(c)(1)) as of the date of disposition.

                                      A-25



                                                       
<PAGE>



It may be necessary to obtain a statement that this Security does not constitute
a "United  States real  property  interest"  prior to the time that a tax return
would otherwise be required to be filed with the United States Internal  Revenue
Service with respect to such  disposition in order to avoid a withholding tax on
such  disposition.  If, at any time  while this  Security  is  outstanding,  the
Company  determines  that it is at such  time a  "United  States  real  property
holding  corporation",   it  shall  provide  notice  of  such  determination  in
accordance with the provisions of Section 13 hereof. The Holder of this Security
can contact the Company at 400 Centre  Street,  Newton,  Massachusetts  02158 to
obtain  information  as to the  United  States  income tax  consequences  of the
classification  of  the  Company  as a  "United  States  real  property  holding
corporation."

19.      Abbreviations and Defined Terms.

         Customary  abbreviations  may be used  in the  name  of a  Holder  of a
Security  or an  assignee,  such as: TEN COM (= tenants in  common),  TEN ENT (=
tenants by the  entireties),  JT TEN (= joint tenants with right of survivorship
and not as tenants in common), CUST (= Custodian),  and U/G/M/A (= Uniform Gifts
to Minors Act).

20.      CUSIP Numbers.

         Pursuant to a  recommendation  promulgated  by the Committee on Uniform
Security Identification  Procedures,  the Company will cause CUSIP numbers to be
printed on the Securities as a convenience to the Holders of the Securities.  No
representation  is made as to the  accuracy  of such  numbers  as printed on the
Securities and reliance may be placed only on the other  identification  numbers
printed hereon.

21.      Accounting Terms.

         All  accounting  terms not  otherwise  defined  herein  shall  have the
meanings  assigned to them in  accordance  with  generally  accepted  accounting
principles as applied in the United States.

22.      Descriptive Headings:

         The  descriptive  headings  appearing  herein  are for  convenience  of
reference only and shall not alter,  limit or define the provisions  hereof. The
Company  will furnish to any Holder upon  written  request and without  charge a
copy of the Indenture.

                             Request may be made to:
                             Health and Retirement Properties Trust
                             400 Centre Street
                             Newton, MA 02158
                             Attention: Secretary

                                      A-26




<PAGE>



23.      Limitations on certain Holders.

         This  Security  may  not  be  transferred  (by  sale,  transfer,  gift,
assignment,  device or other disposition,  whether voluntarily or involuntarily,
whether  beneficially  or of record,  and whether  effected  constructively,  by
operation of law or otherwise)  to any Person if, as a result of such  transfer,
the Holder hereof or any other Person having an interest in this Security (other
than an  Excepted  Person,  as defined in the  Company's  Amended  and  Restated
Declaration of Trust, as amended), would, if this Security were fully converted,
own or be deemed to own,  directly or  indirectly,  capital stock of the Company
representing  8.5% or more in value of the total  capital  stock of the  Company
outstanding  (determined  in accordance  with the provisions of paragraph (b) of
Section 3 above).  ANY  TRANSFER  IN  VIOLATION  OF THIS  SECTION 23 NEED NOT BE
RECOGNIZED  BY  THE  COMPANY,  THE  TRUSTEE  OR ANY  AGENT  (AS  DEFINED  IN THE
INDENTURE),  AND ANY PERSON WHO,  NOTWITHSTANDING THE FOREGOING,  WOULD, IF THIS
SECURITY WERE FULLY CONVERTED,  OWN OR BE DEEMED TO OWN, DIRECTLY OR INDIRECTLY,
CAPITAL  STOCK OF THE  COMPANY  REPRESENTING  8.5% OR MORE IN VALUE OF THE TOTAL
CAPITAL STOCK OF THE COMPANY  OUTSTANDING  (DETERMINED  IN  ACCORDANCE  WITH THE
PROVISIONS  OF PARAGRAPH  (B) OF SECTION 3 ABOVE)  SHALL,  TO THE EXTENT OF SUCH
EXCESS,  NOT BE ENTITLED TO CONVERT THIS SECURITY AS OTHERWISE  PROVIDED  HEREIN
AND IN THE INDENTURE.

                                      A-27



                         
<PAGE>



                                 TRANSFER NOTICE

If you the Holder wants to assign this Security, fill in the form below and have
your signature guaranteed:

For value received, I or we assign and transfer this Security to

                      (INSERT ASSIGNEE'S SOCIAL SECURITY OR
                           TAX IDENTIFICATION NUMBER)

                 _______________________________________________
                |                                               |
                |_______________________________________________|



 ................................................................

 ................................................................

 ................................................................

 ................................................................
     (Print or type assignee's name, address and zip code)

 ...........................................................agent
to transfer this Security on the books of the Company.  The agent
may substitute another to act for him.


Date:...........................................................

Your signature:.................................................
               (Sign exactly as your name appears on the other
                side of this Security)

Signature Guarantee*:...........................................

*Signature must be guaranteed by an eligible  guarantor  institution  within the
meaning of Securities and Exchange  Commission  Rule 17Ad-15  (including  banks,
stock brokers,  savings and loan associations,  national  securities  exchanges,
registered  securities  associations,  clearing agencies and credit unions) with
membership or participation in an approved signature guarantee medallion program
if  this  Security  is to be  delivered  other  than  to and in the  name of the
registered holder.



                                      A-28



                                                       
<PAGE>



                                CONVERSION NOTICE

         If (i) Registered  Security of  denomination  U.S.$1,000 or (ii) Bearer
Security of denomination U.S.$1,000:

         The undersigned  holder of this Security hereby  irrevocably  exercises
the option to convert  this  Security  into shares of Common Stock of Health and
Retirement  Properties  Trust in accordance  with the terms of this Security and
directs that such shares be  registered in the name of and  delivered,  together
with a check in payment for any fractional  share, to the  undersigned  unless a
different name has been indicated  below.  If shares are to be registered in the
name of a  person  other  than the  undersigned,  the  undersigned  will pay all
transfer taxes payable with respect thereto.

         The  undersigned  hereby  certifies  that,  after giving effect to such
conversion,the  undersigned  will  not  own or be  deemed  to own,  directly  or
indirectly,  capital  stock of the Company  which,  together  with capital stock
issuable upon conversion of any other Bearer Securities or Registered Securities
owned  directly or indirectly  by the  undersigned,  represents  8.5% or more in
number,  value or  voting  power,  of the  total  capital  stock of the  Company
outstanding  (determined  in accordance  with the provisions of paragraph (b) of
Section 3 of this Security).

Dated:

                                               -----------------------------
                                               Signature
                                               MUST BE MEDALLION GUARANTEED
                                               IF THE STOCK IS TO BE ISSUED
                                               IN A NAME OTHER THAN THE
                                               REGISTERED HOLDER OF THE
                                               SECURITY

         If shares are to be registered in the name of and delivered to a person
other than the holder, please print such person's name and address:


                                               -----------------------------
                                               HOLDER
                                               Please  print name
                                               and   address   of
                                               holder:



                                      A-29




<PAGE>



                                CONVERSION NOTICE

         If (i) Registered  Security of denomination  greater than U.S.$1,000 or
(ii) Bearer Security of denomination U.S.$10,000:

         The undersigned  holder of this Security hereby  irrevocably  exercises
the option to convert this  Security,  or portion hereof (which is U.S.$1,000 or
an integral  multiple thereof below  designated,  into shares of Common Stock of
Health and  Retirement  Properties  Trust in  accordance  with the terms of this
Security, and directs that such shares, together with a check in payment for any
fractional  share and any  Securities  representing  any  unconverted  principal
amount hereof,  be delivered to and be registered in the name of the undersigned
unless a different name has been indicated below. If shares or Securities are to
be  registered  in  the  name  of a  person  other  than  the  undersigned,  the
undersigned will pay all transfer taxes payable with respect thereto.

         The  undersigned  hereby  certifies  that,  after giving effect to such
conversion,the  undersigned  will  not  own or be  deemed  to own,  directly  or
indirectly,  capital  stock of the Company  which,  together  with capital stock
issuable upon conversion of any other Bearer Securities or Registered Securities
owned  directly or indirectly  by the  undersigned,  represents  8.5% or more in
value of the total  capital  stock of the  Company  outstanding  (determined  in
accordance with the provisions of paragraph (b) of Section 3 of this Security).

Dated:                                      __________________________________
                                            Signature
                                            MUST BE MEDALLION GUARANTEED IF THE
                                            STOCK IS TO BE ISSUED IN A NAME
                                            OTHER THAN THE REGISTERED HOLDER OF
                                            THE SECURITY


                                      A-30




<PAGE>




If shares of Securities             If only a portion of the Securities
are to be registered in             in the name of is to be converted,
the name of a Person other          please indicate:
than the holder, please
print such person's name            1.       Principal Amount to be
and address                                  converted:  U.S.$__________

                                    2.       Kind, amount and denomination
                                             of Securities representing
                                             unconverted principal amount
                                             to be issued:

                                             Bearer-U.S.$_________________
                                             Denominations:U.S.$__________
                                                      (U.S.$1,000 or $10,000)
                                             Registered-U.S.$_____________
                                             Denominations:U.S.$__________
                                                      (U.S. $1,000 or an
                                             integral multiple thereof)

                                    Registered Securities are not
                                    exchangeable for Bearer Securities.


                                      A-31




<PAGE>



                                    EXHIBIT B

                     (FORM OF REGULATION S GLOBAL SECURITY)

     THIS SECURITY HAS NOT BEEN  REGISTERED  UNDER THE UNITED STATES  SECURITIES
ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT") OR ANY STATE  SECURITIES  LAWS.
NEITHER THIS SECURITY NOR ANY INTEREST OR  PARTICIPATION  HEREIN MAY BE OFFERED,
SOLD OR OTHERWISE TRANSFERRED,  DIRECTLY OR INDIRECTLY,  IN THE UNITED STATES OF
AMERICA  (INCLUDING THE STATES AND THE DISTRICT OF COLUMBIA),  ITS  TERRITORIES,
ITS  POSSESSIONS  AND OTHER  AREAS  SUBJECT  TO ITS  JURISDICTION  (THE  "UNITED
STATES") OR TO ANY CITIZEN,  NATIONAL OR RESIDENT OF THE UNITED STATES OR TO ANY
CORPORATION,  PARTNERSHIP  OR OTHER ENTITY  CREATED OR ORGANIZED IN OR UNDER THE
LAWS OF THE UNITED STATES OR ANY POLITICAL SUBDIVISION THEREOF, OR TO ANY ESTATE
OR TRUST THE INCOME OF WHICH IS SUBJECT TO UNITED STATES FEDERAL INCOME TAXATION
REGARDLESS  OF ITS  SOURCE OR TO ANY OTHER  PERSON  DEEMED A U.S.  PERSON  UNDER
REGULATION S UNDER THE  SECURITIES  ACT  ("UNITED  STATES  PERSONS"),  EXCEPT TO
CERTAIN  INSTITUTIONAL  INVESTORS  IN THE  UNITED  STATES  IN  TRANSACTIONS  NOT
REQUIRED TO BE REGISTERED UNDER THE SECURITIES ACT. ANY UNITED STATES PERSON WHO
HOLDS THIS  OBLIGATION  WILL BE SUBJECT TO  LIMITATIONS  UNDER THE UNITED STATES
FEDERAL INCOME TAX LAWS,  INCLUDING THE LIMITATIONS  PROVIDED IN SECTIONS 165(j)
AND 1287(a) OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986, AS AMENDED. THIS
SECURITY IS A TEMPORARY  GLOBAL  SECURITY,  WITHOUT  COUPONS,  EXCHANGEABLE  FOR
DEFINITIVE  BEARER  SECURITIES  WITH INTEREST  COUPONS OR REGISTERED  SECURITIES
WITHOUT INTEREST COUPONS. THE RIGHTS ATTACHING TO THIS GLOBAL SECURITY,  AND THE
CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR DEFINITIVE SECURITIES,  ARE
AS SPECIFIED IN THE  INDENTURE (AS DEFINED  HEREIN).  NEITHER THE HOLDER NOR THE
BENEFICIAL  OWNERS OF THIS GLOBAL  SECURITY SHALL BE ENTITLED TO RECEIVE PAYMENT
OF INTEREST HEREON EXCEPT PURSUANT TO THE PROVISIONS HEREOF.

                     HEALTH AND RETIREMENT PROPERTIES TRUST
               (Organized under the laws of the State of Maryland)
           7.5% CONVERTIBLE SUBORDINATED DEBENTURES DUE 2003, SERIES B
                           TEMPORARY GLOBAL DEBENTURE


      Health and Retirement  Properties  Trust, a real estate  investment  trust
duly  organized  and  existing  under  the laws of the  State of  Maryland  (the
"Company"),   for  value  received,  hereby  promises  to  pay  to  bearer  upon
presentation  and  surrender  of  this  Global  Security  the  principal  sum of
$________________  United States  Dollars on October 1, 2003 and to pay interest
thereon,  from October 7, 1996  semiannually in arrears on April 1 and October 1
in each year, commencing April 1, 1997, at the rate of 7.5% per annum, until the
principal hereof is paid or made available for payment; provided,  however, that
interest on this




                                       B-1

<PAGE>



Global  Security  shall be payable  only after the  issuance  of the  definitive
Securities for which this Global  Security is  exchangeable  and, in the case of
definitive  Securities in bearer form, only upon  presentation and surrender (at
an  office  or  agency  outside  the  United  States,  its  territories  and its
possessions, except as otherwise provided in the Indenture referred to below) of
the interest  coupons  thereto  attached as they severally  mature.  This Global
Security  is  one  of a duly  authorized  issue  of  Securities  of the  Company
designated as specified in the title  hereof,  issued and to be issued under the
Indenture  dated as of September 20, 1996 between the Company and Fleet National
Bank, as Trustee (the "Trustee," which term includes any successor trustee under
the Indenture), as supplemented by the Second Supplemental Indenture dated as of
October 7, 1996 by and between the Company and the Trustee (such  Indenture,  as
so supplemented, the "Indenture").  This Global Security is a temporary Security
and is  exchangeable  in whole or from time to time in part without  charge upon
request of the holder  hereof for  definitive  Securities  in bearer form,  with
interest coupons attached, or in registered form, without coupons, of authorized
denominations,  (a) not  earlier  than 40 days after the date  hereof and (b) as
promptly as practicable following  presentation of each certification called for
in the Indenture for such purpose,  that the beneficial  owner or owners of this
Global  Security  (or,  if  such  exchange  is only  for a part  of this  Global
Security,  of such part) are not United States persons or other Persons who have
purchased  such  Security  for  resale  to  United  States  persons.  Definitive
Securities  in bearer  form to be  delivered  in  exchange  for any part of this
Global  Security  shall be  delivered  only  outside of the United  States,  its
territories  and its  possessions.  Upon any  exchange  of a part of this Global
Security for definitive  Securities,  the portion of the principal amount hereof
so  exchanged  shall be endorsed by the Trustee or its agent on the  Schedule of
Exchanges  hereto,  and the  principal  amount  hereof  shall be reduced for all
purposes by the amount so  exchanged.  Until  exchanged  in full for  definitive
Securities,  this Global  Security shall in all respects be entitled to the same
benefits  under,  and subject to the same terms and conditions of, the Indenture
and the  Supplemental  Indenture  as  definitive  Securities  authenticated  and
delivered  thereunder,  except that neither the holder hereof nor the beneficial
owners of this Global  Security shall be entitled to receive payment of interest
hereon or to convert  this Global  Security  into shares of Common  Stock of the
Company or any other security, cash or other property.

      THIS GLOBAL SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS, UNITED STATES OF AMERICA, WITHOUT
REGARD TO PRINCIPLES OF CONFLICTS OF LAWS.





                                       B-2

<PAGE>



      All terms used in this Global  Security which are defined in the Indenture
or the  Supplemental  Indenture shall have the meanings  assigned to them in the
Indenture  or the  Supplemental  Indenture,  as the  case  may  be.  Unless  the
certificate of authentication hereon has been manually executed by an authorized
signatory  of the  Trustee,  this Global  Security  shall not be entitled to any
benefit under the Indenture or the Supplemental Indenture or valid or obligatory
for any purpose.






                                       B-3

<PAGE>



      IN WITNESS,  WHEREOF,  the  Company has caused this Global  Security to be
duly executed in its corporate name by its duly  authorized  signatory under its
corporate seal.

Dated: October 7, 1996              HEALTH AND RETIREMENT PROPERTIES TRUST


                                    By:  _________________________________
                                         Name:
                                         Title:


[Corporate Seal]


Attest:  _________________________________


CERTIFICATE OF AUTHENTICATION

This is one of the Securities described in the within-mentioned Indenture.

         FLEET NATIONAL BANK,
         as Trustee

                  [By:  [NAME OF AUTHENTICATION AGENT, IF ANY],
                                as Authentication Agent]*


                  By:  _________________________________
                               Authorized Officer















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

*        To be included in lieu of the Trustee's signature if
         authentication to be performed by an Authentication Agent
         appointed by the Trustee.




                                       B-4

<PAGE>


                              SCHEDULE OF EXCHANGES

                                            Remaining
                                            principal
                                            Principal amount
                  amount exchanged          following              Notation made
Date              for definitive            such                   on behalf of
made              Securities                exchange               the Trustee*

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

- -------------------------
*Or the agent of the Trustee




                                       B-5


                          THIRD SUPPLEMENTAL INDENTURE
                           Dated as of October 7, 1996

                                       to

                                    INDENTURE

                         Dated as of September 20, 1996

                                     between

                     HEALTH AND RETIREMENT PROPERTIES TRUST

                                       and

                               FLEET NATIONAL BANK

                                   as Trustee


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

                    7.25% Convertible Subordinated Debentures
                                    Due 2001
                           --------------------------



                                       

<PAGE>




                          THIRD SUPPLEMENTAL INDENTURE



                  THIRD  SUPPLEMENTAL  INDENTURE,  dated as of  October  7, 1996
(this "Supplement"),  between Health and Retirement Properties Trust, a Maryland
real estate investment trust (the "Company"),  and Fleet National Bank, a United
States Bank, as trustee (the "Trustee"), to that certain Indenture,  dated as of
September 20, 1996, between the Company and the Trustee (the "Indenture").

                  WHEREAS,  the parties  hereto have entered into the  Indenture
which  provides  for the  issuance  by the Company of the  individual  series of
securities thereunder, upon the Company and Trustee entering into a supplemental
indenture to the Indenture authorizing such series; and

                  WHEREAS,  the  Company  wishes to issue  its  first  series of
securities thereunder,  designated its 7.25% Convertible Subordinated Debentures
Due 2001 (the "Securities"); and

                  WHEREAS,   all  acts   necessary  to  constitute   this  First
Supplemental  Indenture as a valid,  binding and legal obligation of the Company
have been done and performed.

                  NOW,  THEREFORE,  witnesseth  that,  in  consideration  of the
premises and of the covenants contained herein, it is hereby agreed as follows:

                                    ARTICLE 1

                   DEFINITIONS AND INCORPORATION BY REFERENCE

SECTION 1.1       Definitions.

         Solely for purposes of this Supplement, Section 101 of the Indenture is
hereby amended by inserting, in their appropriate  alphabetical locations,  each
of the following defined terms:

         "Agent"  means  any   Registrar,   Paying  Agent,   Conversion   Agent,
co-registrar or agent for service of notices and demands.

         "Capital Stock" means any and all shares or other equivalents  (however
designated)  of capital  stock,  including  all common  stock and all  preferred
stock, in the case of corporation, or partnership interests or other equivalents
(however designated) in the case of a partnership or common shares of

                                       -1-

<PAGE>



beneficial interest or other equivalents (however designated) in
the case of a trust.

         "Closing  Price" means with  respect to the shares of Capital  Stock of
the Company on any day, (i) the reported last sale price regular way or, in case
no such  reported  sale takes  place on such day,  the  average of the  reported
closing bid and asked  prices  regular way, in either case on the New York Stock
Exchange,  or (ii) if the shares of Capital  Stock are not listed or admitted to
trading on the New York Stock Exchange, the reported last sale price regular way
or, in case no such  reported  sale takes place on such day,  the average of the
reported  closing  bid and asked  prices  regular  way,  in  either  case on the
principal national  securities exchange on which the shares of Capital Stock are
listed or admitted to trading,  or (iii) if the shares of Capital  Stock are not
listed or admitted to trading on any national securities  exchange,  the average
of the closing bid and asked prices as furnished by any New York Stock  Exchange
member firm selected from time to time by the Company for that purpose.

         "Common  Shares"  means  the  Company's  common  shares  of  beneficial
interest,  $.01 par value per share, or as such shares may be reconstituted from
time to time.

         "Default"  means any event which is, or after notice or passage of time
or both would be, an Event of Default.

         "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

         "Indebtedness" as applied to any Person,  means,  without  duplication:
(a) all liabilities and obligations, contingent or otherwise, of such Person (i)
in respect of borrowed  money  whether or not  evidenced by a  promissory  note,
draft or similar instrument (whether or not the recourse of the lender is to the
whole of the assets of such Person or only to a portion thereof); (ii) evidenced
by bonds, notes, debentures or similar instruments;  (iii) evidenced by a letter
of credit or reimbursement  obligation of such Person with respect to any letter
of credit; (iv) evidenced by bankers'  acceptances or similar instruments issued
or accepted by banks;  (v) for the payment of money relating to obligations with
respect to any lease that is properly  classified  as a  liability  on a balance
sheet in accordance  with generally  accepted  accounting  principles;  and (vi)
representing the balance deferred and unpaid for all or any part of the purchase
price of property or services  (except any such balance that  constitutes  (a) a
trade payable or an accrued liability arising in the ordinary course of business
or (b) a trade draft or note payable issued in the ordinary

                                       -2-

<PAGE>



course of business in connection  with the purchase of goods or  services);  (b)
all net obligations of such Person under Interest Swap and Hedging  Obligations;
(c) all  liabilities  of others  described in the preceding  clauses (a) and (b)
which such Person has  guaranteed  or for which it is  otherwise  liable and all
obligations to purchase,  redeem or acquire any Capital  Stock;  and (d) any and
all deferrals,  amendments, renewals, extensions,  supplements,  refinancings or
refundings  (whether  direct  or  indirect)  of  any  liability  or  obligations
described in any of the  preceding  clauses (a), (b) or (c), or this clause (d),
whether or not between or among the same parties.

         "Interest  Swap and Hedging  Obligation"  means any  obligation  of any
person  pursuant  to  any  interest  rate  swap  agreement,  interest  rate  cap
agreement,  interest rate collar  agreement,  interest rate exchange  agreement,
currency  exchange  agreement or any other agreement or arrangement  designed to
protect against  fluctuations in interest rates or currency  values,  including,
without limitation, any arrangement whereby, directly or indirectly, such person
is  entitled  to  receive  from time to time  periodic  payments  calculated  by
applying either a fixed or floating rate of interest on a stated notional amount
in exchange for periodic  payments made by such person  calculated by applying a
fixed or floating rate of interest on the same notional amount.

         "Junior  Securities"  of any  Person  means any  Capital  Stock and any
Indebtedness of such Person that is (i)  subordinated in right of payment to the
Securities  and has no scheduled  installment  of principal  due, by redemption,
sinking fund  payment or  otherwise,  on or prior to the Stated  Maturity of the
Securities and (ii) subordinated in right of payment to all Senior  Indebtedness
at least to the same extent as the Securities.

         "Officer" means the President, the Chief Operating Officer,
any Vice President, the Treasurer, the Chief Financial Officer,
any Assistant Treasurer, the Secretary or any Assistant Secretary
of the Company.

         "Securities Act" means the Securities Act of 1933, as amended from time
to time.

         "Securities" means the securities in the form of Exhibit A hereto.

         "Senior Indebtedness" means the principal,  premium, if any, and unpaid
interest  (including interest accruing on or after the filing of any petition in
bankruptcy or for reorganization  relating to the Company whether or not a claim
for post-filing

                                       -3-

<PAGE>



interest is allowed in such proceeding), fees, charges, expenses,  reimbursement
and  indemnification  obligations,  and all other  amounts  payable  under or in
respect of (i) any  Indebtedness  of the Company and (ii) any and all deferrals,
renewals,  extensions,  refundings and refinancings (whether direct or indirect)
of any such Indebtedness, whether any such Indebtedness exists as of the date of
this Indenture or shall hereafter be created,  incurred,  assumed or guaranteed;
provided,   however,   that  Senior  Indebtedness  shall  not  include  (A)  the
Securities,  (B) the  Series  A  Debentures  or the  Series  B  Debentures,  (C)
Indebtedness  of the  Company  owed or owing  to a  Subsidiary  or any  officer,
director, trustee or employee of the Company or any Subsidiary, (D) Indebtedness
of the  Company  which,  pursuant  to the terms of the  instrument  creating  or
evidencing such  Indebtedness,  is expressly made pari passu with or subordinate
in right of payment to the  Securities  or (E) any  liability  for taxes owed or
owing to the Company.

         "Series A Debentures" means the Company's 7.5% Convertible Subordinated
Debentures  Due  2003,  Series  B, in the  aggregate  principal  amount of up to
$80,500,000,  issued  pursuant to a First  Supplemental  Indenture,  dated as of
October 7, 1996, between the Company and the Trustee.

         "Series B Debentures" means the Company's 7.5% Convertible Subordinated
Debentures Due 2003, Series B, in the aggregate principal amount of $149,500,000
issued pursuant to a Second Supplemental Indenture, dated as of October 7, 1996,
between the Company and the Trustee.

         "Trust  Officer",  when  used with  respect  to the  Trustee,  means an
officer of the Trustee  customarily  performing  functions  in  corporate  trust
matters or any other  officer of the  Trustee  to whom such  matter is  referred
because of his knowledge of and familiarity with the particular subject.

SECTION 1.2       Incorporation by Reference to Trust Indenture Act.

         Solely for purposes of this Supplement, Article One of the Indenture is
hereby amended to add thereto the following:

         SECTION  114.  Incorporation  by  Reference  to  Trust  Indenture  Act.
Whenever  this  Indenture  refers to a provision  of the TIA,  the  provision is
incorporated  by reference in and made a part of this  Indenture.  The following
TIA terms used in this Indenture have the following meanings:

         "Commission" means the Securities and Exchange Commission.


                                       -4-

<PAGE>



         "indenture securities" means the Securities.

         "indenture security holder" means a Securityholder.

         "indenture to be qualified" means this Indenture.

         "indenture trustee" or "institutional trustee" means the
         Trustee.

         "obligor" on the indenture securities means the Company or
         any other obligor on the indenture securities.

         All other  terms used in this  Indenture  that are  defined by the TIA,
defined by TIA reference to another statute or defined by Commission  rules have
the meanings assigned to them therein.

                                    ARTICLE 2

                                 THE SECURITIES

SECTION 2.1       Form; Dating; Incorporation of Form in Indenture.

         In accordance  with Sections 201 and 301 of the Indenture,  there shall
be and is hereby authorized a single series of Securities  designated the "7.25%
Convertible  Subordinated  Debentures  Due 2001" limited in aggregate  principal
amount to $40,000,000,  except for Securities  authenticated  and delivered upon
registration of transfer of, or in exchange for, or in lieu of, other Securities
pursuant to Sections 9.5 or 10.1 hereof or pursuant to Sections 304, 305, 306 or
1107 of the Indenture.

         Their  fixed  maturity  shall be October  1, 2001,  and they shall bear
interest at the rate per annum of 7.25%, from and including the date of issuance
thereof until maturity or earlier  redemption,  payable  semiannually on April 1
and October 1 commencing April 1, 1997,  until the principal  thereof is paid or
made available for payment.

         The  principal of and premium,  if any, and interest on the  Securities
shall be payable  at the  office or agency of the  Company in the City of Boston
maintained for such purpose and at any other office or agency  maintained by the
Company for such purpose;  provided,  however, that at the option of the Company
payment of  interest  may be made by check  mailed to the  address of the Person
entitled thereto as such address shall appear in the Security Register.

         The Securities shall be redeemable as provided in Article 3.


                                       -5-

<PAGE>



         The  Securities  shall be  subordinated  in right of  payment to Senior
Indebtedness, to the extent provided in Article 11 hereof.

         The Securities shall be convertible as provided in Article 10 hereof.

         The Securities and the Trustee's certificate of authentication shall be
substantially in the form of Exhibit A which is incorporated in and made part of
this  Supplement.  The Securities may have  notations,  legends or  endorsements
required  by law,  stock  exchange  rules,  agreements  to which the  Company is
subject,  or usage. The Company shall approve the form of the Securities and any
notation,  legend or endorsement on them.  Each Security shall be dated the date
of its authentication.

         The terms and provisions  contained in the Securities shall constitute,
and are  hereby  expressly  made,  a part of this  Supplement  and to the extent
applicable, the Company and the Trustee, by their execution and delivery of this
Supplement,  expressly  agree  to such  terms  and  provisions  and to be  bound
thereby.  The  Securities  shall be issuable  only in  registered  form  without
coupons.

SECTION 2.2       Registrar and Agents.

         The Company shall maintain an office or agency where  Securities may be
presented for registration of transfer or for exchange ("Registrar"),  an office
or agency where the Securities may be presented for payment ("Paying Agent"), an
office or agency where  Securities may be presented for conversion  ("Conversion
Agent") and an office or agency where notices and demands to or upon the Company
in respect of the  Securities and this  Supplement may be served.  The Registrar
shall keep a register of the Securities  (the "Security  Register") and of their
transfer and exchange.  The Company may have one or more co- registrars,  one or
more additional Paying Agents and one or more additional  Conversion Agents. The
Company or any Subsidiary may act as Paying Agent and/or  Conversion  Agent. The
term  "Paying  Agent"  includes  any  additional   paying  agent  and  the  term
"Conversion Agent" includes any additional conversion agent.

         The Company may change any Paying Agent, Registrar, Conversion Agent or
Co-Registrar  on sixty (60)  days'  prior  written  notice to the  Trustee.  The
Company  shall notify the Trustee in writing of the name and address of any such
Agent.  If the Company fails to maintain a Registrar,  Paying Agent,  Conversion
Agent  or  agent  for  service  of  notices  and  demands,  or fails to give the
foregoing notice, the Trustee shall act as such.

                                       -6-

<PAGE>



         The Company initially appoints the Trustee as Registrar,  Paying Agent,
Conversion Agent and agent for service of notices and demands.


SECTION 2.3       Paying Agent to Hold Money in Trust.

         On or before 11:00 a.m. (Boston time) on each due date of the principal
of,  premium if any, and interest on any  Securities,  the Company shall deposit
with each Paying Agent a sum sufficient to pay such principal,  premium, if any,
and interest so becoming  due. The Company shall require each Paying Agent other
than the Trustee to agree in writing  that it will hold in trust for the benefit
of Holders of the  Securities  or the Trustee all money held by the Paying Agent
for the payment of principal of,  premium if any, or interest on the  Securities
and to notify the Trustee of any default by the Company (or any other obligor on
the Securities) in making any such payment.  If the Company or a Subsidiary acts
as  Paying  Agent,  it shall on or  before  each due date of the  principal  of,
premium,  if any, or interest on any Securities  segregate the money and hold it
as a separate  trust fund. The Company at any time may require a Paying Agent to
pay all money held by it to the  Trustee  and the Trustee may at any time during
the continuance of any payment default,  upon written request to a Paying Agent,
require such Paying  Agent to  forthwith  pay to the Trustee all sums so held in
trust by such Paying  Agent.  Upon doing so, the Paying Agent (if other than the
Company or a Subsidiary thereof) shall have no further liability for the money.

SECTION 2.4       Outstanding Securities.

         Securities  outstanding  at any  time  are all  Securities  theretofore
authenticated  and  delivered  under  this  Supplement  except:  (a)  Securities
theretofore   canceled  by  the  Trustee  or   delivered   to  the  Trustee  for
cancellation;  and (b)  Securities  in  exchange  for or in lieu of which  other
Securities have been  authenticated  and delivered  pursuant to this Supplement,
other than any Securities in respect of which there shall have been presented to
the Trustee proof  satisfactory  to it that such  Securities  are held by a bona
fide  purchaser  in whose hands such  Securities  are valid  obligations  of the
Issuer;  provided,  that  in  determining  whether  the  Securityholders  of the
requisite principal amount of outstanding Securities are present at a meeting of
Securityholders  for quorum  purposes or have voted or taken or concurred in any
action  under this  Supplement,  including  the making of any  request,  demand,
authorization,  direction, notice, consent or waiver hereunder, Securities owned
by the Company or any other obligor upon the Securities or any Affiliate

                                       -7-

<PAGE>



of the  Company  or such  other  obligor  shall be  disregarded  and  deemed not
outstanding,  except that, in determining whether the Trustee shall be protected
in relying  upon any such  determination  as to the presence of a quorum or upon
any such request, demand,  authorization,  direction, notice, consent or waiver,
only  Securities  which a Trust Officer of the Trustee  actually  knows to be so
owned shall be disregarded.

         If a Security is replaced pursuant to Section 306 of the Indenture,  it
ceases to be outstanding  until the Trustee  receives proof  satisfactory  to it
that the replaced Security is held by a bona fide purchaser.

         If the Paying Agent (other than the Company or a Subsidiary) holds on a
Redemption  Date or maturity date money deposited with it by or on behalf of the
Company  sufficient  to pay the  principal  of,  premium,  if any,  and  accrued
interest on  Securities  payable on that date,  then on and after that date such
Securities cease to be outstanding and interest on them ceases to accrue.

         A Security does not cease to be  outstanding  because the Company or an
Affiliate holds the Security.

SECTION 2.5       Securityholder Lists.

         The  Trustee  shall  preserve  in as  current  a form as is  reasonably
practicable  the most recent list  available to it of the names and addresses of
Securityholders.  If the  Trustee  is not the  Registrar,  the  Registrar  shall
furnish to the Trustee at least  seven  Business  Days prior to each  semiannual
interest  payment  date and at such other times as the  Trustee  may  reasonably
request  in writing a list in such form and as of such date as the  Trustee  may
require of the names and addresses of Securityholders upon which the Trustee may
conclusively  rely.  The Trustee  may  destroy  any such list upon  receipt of a
replacement  list.  The Paying  Agent will solicit  from each  Securityholder  a
certification  of social  security number or taxpayer  identification  number in
accordance with its customary practice and as required by law, unless the Paying
Agent is in possession of such certification. Each Paying Agent is authorized to
impose   back-up   withholding   with   respect  to   payments  to  be  made  to
Securityholders to the extent required by law.

                                       -8-

<PAGE>




SECTION 2.6       CUSIP Number.

         The Company shall use a "CUSIP" number when issuing the Securities. The
Trustee  may use the CUSIP  number in notices of  redemption  or  exchange  as a
convenience to Securityholders;  provided that any such notice may state that no
representation  is made as to the  correctness  or accuracy of the CUSIP  number
printed in the notice or on the  Securities and that reliance may be placed only
on the other identification numbers printed on the Securities.

SECTION 2.7       Restrictions on Transfer.

         The Securities  shall be subject to certain  restrictions  on transfer,
set forth in Section 24 of the form of  Security  attached  hereto as Exhibit A.
The Security shall bear a legend substantially to the following effect:

                  IF  NECESSARY  TO EFFECT  COMPLIANCE  BY THE COMPANY  WITH THE
                  REQUIREMENTS  OF THE INTERNAL  REVENUE CODE 1986,  AS AMENDED,
                  RELATING TO REAL ESTATE  INVESTMENT  TRUSTS,  OWNERSHIP OF THE
                  SECURITY  REPRESENTED  HEREBY MAY BE RESTRICTED BY THE COMPANY
                  AND/OR THE  TRANSFER  HEREOF MAY BE  PROHIBITED,  AS SET FORTH
                  MORE FULLY ON THE REVERSE HEREOF.


                                    ARTICLE 3

                                   REDEMPTION

SECTION 3.1       Effect of Notice of Redemption.

         The  Securities  are subject to  redemption as provided in Section 3 of
the form of Security  attached hereto as Exhibit A. Once notice of redemption is
mailed,  Securities  called  for  redemption  become  due  and  payable  on  the
applicable  Redemption  Date  and  at  the  applicable  Redemption  Price.  Upon
surrender to the Paying Agent,  such Securities  shall be paid at the Redemption
Price, plus accrued interest to the Redemption Date.


                                       -9-

<PAGE>



                                    ARTICLE 4

                                    COVENANTS

SECTION 4.1       Payment of the Securities.

         Section 1001 of the Indenture is hereby  amended by adding  thereto the
following:

         The Company  shall pay interest on overdue  principal  and premium,  if
any,  at the  rate  borne by the  Security;  it shall  pay  interest,  including
post-petition interest in the event of a proceeding under any Bankruptcy Law, on
overdue installments of interest at the same rate to the extent lawful.

SECTION 4.2       Notice of Default.

         Article Ten of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION  1009.  Notice of  Default.  The Company  will,  so long as any
Securities are outstanding,  deliver to the Trustee,  within 10 days of becoming
aware of any  Default or Event of Default in the  performance  of any  covenant,
agreement or condition in this Indenture,  an Officers'  Certificate  specifying
such  Default or Event of  Default,  the period of  existence  thereof  and what
action the Company is taking or proposes to take with respect thereto.

SECTION 4.3       Limitation on Dividends and Other Distributions.

         Article Ten of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION  1010.  Limitation on Dividends  and Other  Distributions.  The
Company will not (i) declare or pay any dividend of make any distribution on its
shares of Common Shares or to holders of Common Shares (other than  dividends or
distributions  payable in Common Shares or other than as the Company  determines
in good faith is  necessary  to  maintain  its  qualification  as a real  estate
investment trust under the Code) or (ii) purchase,  redeem or otherwise  acquire
or retire for value any of its Common  Shares,  if at the time of such action an
Event of Default has occurred and is continuing or would exist immediately after
such action.  Notwithstanding the foregoing, the provisions of this Section 1010
will not prevent (i) the payment of any  dividend  within 60 days after the date
of declaration when the payment would have complied with the foregoing provision
on the date of  declaration,  or (ii)  the  Company's  retirement  of any of its
Common Shares by exchange for,

                                      -10-

<PAGE>



or out of the proceeds of the substantially concurrent sale of,
other Common Shares.

                                    ARTICLE 5

                                    RESERVED

                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

SECTION 6.1       Events of Default.

         (a)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture  is hereby  amended by  deleting  paragraphs  (1) and (2)  thereof and
replacing said paragraphs in their entirety with the following:

                  (1) default in the payment of any  installment  interest  upon
         any Security or any Series A Debenture or any  installment  of interest
         upon or any  Additional  Amounts  payable  in  respect  of any Series B
         Debenture or of any coupon  appertaining  thereto,  when such interest,
         Additional  Amounts or coupon becomes due and payable,  and continuance
         of such default for a period of 30 days; or

                  (2) default in the payment of the principal of (or premium, if
         any,  on) any  Security  or any  Series  A  Debenture  or any  Series B
         Debenture when it becomes due and payable at its Maturity; or

         (b)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture is hereby amended by deleting paragraph (3) thereof.

         (c)  Solely  for  purposes  of  this  Supplement,  Section  501  of the
Indenture is hereby  amended by deleting  paragraph (8) thereof and replacing it
with the following:

                  (8) the failure by the Company to perform  any  conversion  of
         the Securities,  the Series A Debentures or the Series B Debentures and
         the continuance of such failure for a period of 60 days;


SECTION 6.2       Rights of Holders to Receive Payment.

         Section  508 of the  Indenture  is hereby  amended to add  thereto  the
following:

                                      -11-

<PAGE>



         Notwithstanding any other provision of this Indenture, the right of any
Holder  of any  Security  to  convert  such  Security  or to bring  suit for the
enforcement of such right shall not be impaired or affected  without the written
consent of the Holder.

                                    ARTICLE 7

                                     TRUSTEE

SECTION 7.1       Duties of Trustee.

         Article Six of the  Indenture is hereby  amended by adding  thereto the
following:

         SECTION 612.  Duties of Trustee.

         (1) The duties and responsibilities of the Trustee shall be as provided
by the TIA. If an Event of Default has occurred and is  continuing,  the Trustee
shall  exercise its rights and powers vested in it by this Indenture and use the
same  degree  of care and skill in their  exercise  as a  prudent  Person  would
exercise or use under the circumstances in the conduct of his own affairs.

         (2) Except during the  continuance of an Event of Default and after the
curing or waiving of all such Events of Default which may have occurred:

                  (a) The  Trustee  need  perform  only  those  duties  that are
         specifically set forth in this Indenture,  and the Trustee shall not be
         liable except for the  performance  of such duties as are  specifically
         set forth in this Indenture, and no others, and no implied covenants or
         obligation shall be read into this Indenture against the Trustee.

                  (b) In the  absence of bad faith on its part,  the Trustee may
         conclusively   rely,  as  to  the  truth  of  the  statements  and  the
         correctness  of the opinions  expressed  therein,  upon any  statements
         certificates or opinions furnished to the Trustee and conforming to the
         requirements of this Indenture. The Trustee, however, shall examine the
         certificates  and opinions to determine  whether or not they conform to
         the requirements of this Indenture.

         (3)  The  Trustee  may  not be  relieved  from  liability  for  its own
negligent  action,  its  own  negligent  failure  to  act,  or its  own  willful
misconduct, except that:

                  (a) This paragraph does not limit the effect of
         paragraph (2) of this Section 612.

                                      -12-

<PAGE>



                  (b) The Trustee  shall not be liable for any error in judgment
         made in good  faith by a Trust  Officer,  unless it is proved  that the
         Trustee was negligent in ascertaining the pertinent facts.

                  (c) The Trustee shall not be liable with respect to any action
         it takes or omits to take in good faith in accordance  with a direction
         received by it pursuant to Section 512.

                  (d) No provision of this  Indenture  shall require the Trustee
         to  expend  or risk its own  funds or  otherwise  incur  any  financial
         liability in the  performance of any of its duties  hereunder or in the
         exercise  of any of its rights or powers,  if it shall have  reasonable
         grounds  for  believing  that  repayment  of  such  funds  or  adequate
         indemnity  against such risk or liability is not reasonably  assured to
         it.

                  (e) The  Trustee  shall  have no  duty  to  inquire  as to the
         performance  of the  Company's  covenants  in  Article  IV  hereof.  In
         addition,  the  Trustee  shall not be deemed to have  knowledge  of any
         Default or Event of Default  except (i) any Event of Default  occurring
         pursuant  to Section  6.1(a)  (provided  that the Trustee is the Paying
         Agent),  or (ii)  any  Default  or Event  of  Default  of which a Trust
         Officer of the Trustee shall have received  written  notification  from
         the Company or any Holder or obtained actual knowledge.

         (4) Every  provision of this  Indenture  that in any way relates to the
Trustee is subject to paragraphs  (1), (2), (3), (5) and (6) of this Section 612
and subject to Sections 315 and 316 of the TIA.

         (5) Subject to  subsection  (3),  the Trustee may refuse to perform any
duty or exercise any right or power  unless,  subject to the  provisions  of the
TIA,  it receives  indemnity  satisfactory  to it against  any loss,  liability,
expense or fee.

         (6) The Trustee shall not be liable for interest on any money  received
by it.  Money held in trust by the  Trustee  need not be  segregated  from other
funds except to the extent required by law.

                                      -13-

<PAGE>




SECTION 7.2       Eligibility; Disqualification.

         Section 607 of the  Indenture is hereby  amended by adding  thereto the
following:

         The Trustee  shall comply with TIA ss.  310(b),  including the optional
provision permitted by the second sentence of TIA ss. 310(b)(9).

SECTION 7.3       Preferential Collection of Claims Against Company.

         The  Trustee is  subject  to TIA ss.  311(a),  excluding  any  creditor
relationship  listed in TIA ss.  311(b).  A  Trustee  who has  resigned  or been
removed shall be subject to TIA ss. 311(a) to the extent indicated therein.


                                    ARTICLE 8

                     SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 8.1       Defeasance of the Securities.

         The provisions  for defeasance of the Securities  under Section 1402 of
the Indenture and for covenant  defeasance of the Securities  under Section 1403
of the Indenture and all related provisions of Article 14 of the Indenture shall
apply with respect to the Securities.

                                    ARTICLE 9

                             AMENDMENTS AND WAIVERS

SECTION 9.1 Amendments and Waivers with Consent of Holders.

         Section  902 of the  Indenture  is hereby  amended to add  thereto  the
following:

         With the written  consent of the Holders of not less than a majority in
aggregate  principal  amount  of the  Securities  at the time  outstanding,  the
Company,  when  authorized  by Board  Resolution,  and the  Trustee may amend or
supplement  this  Indenture  (any such  amendment or  supplement to be in a form
satisfactory  to the  Trustee) or the  Securities  for the purpose of adding any
provisions to or changing in any manner or eliminating  any of the provisions of
this  Indenture or of any  supplemental  indenture or of modifying in any manner
the  rights of the  Holders of the  Securities.  The  Holders  of a majority  in
principal amount

                                      -14-

<PAGE>



of the Securities then outstanding may waive compliance in a particular instance
by the Company with any provision of this  Indenture or the  Securities  without
notice to any  Securityholder.  Subject to Section  904,  without the consent of
each Holder of Securities affected, however, an amendment, supplement or waiver,
may not:

                  (1) make any change in Section 508 of this Indenture;

                  (2) make any change that adversely affects the right to
         convert any Security; or

                  (3) make any change in  Article  11 of the Third  Supplemental
         Indenture,  dated as of October 7, 1996,  which  adversely  affects the
         rights of any Securityholder.

SECTION 9.2       Revocation and Effect of Consents.

         Section 904 of the  Indenture is hereby  amended by adding  thereto the
following:

         Subject  to  this  Indenture,  each  amendment,  supplement  or  waiver
evidencing  other action shall become  effective in  accordance  with its terms.
Until an amendment, supplement or waiver becomes effective, a consent to it by a
Holder of a Security is a  continuing  consent by the Holder even if notation of
the consent is not made on any Security.  Any such Holder or subsequent  Holder,
however, may revoke the consent as to his Security or portion of a Security,  if
the Trustee  receives the notice of  revocation  before the date the  amendment,
waiver or other action becomes effective.

         The Company may,  but shall not be obligated  to, fix a record date for
the purpose of  determining  the Holders  entitled to consent to any  amendment,
supplement  or  waiver.  If a record  date is fixed,  then  notwithstanding  the
provisions  of the  immediately  preceding  paragraph,  those  Persons  who were
Holders at such record date (or their duly  designated  proxies)  and only those
Persons, shall be entitled to consent to such amendment, supplement or waiver or
to revoke any consent previously given,  whether or not such Persons continue to
be Holders  after such record date.  No consent  shall be valid or effective for
more than 90 days after such  record  date unless  consent  from  Holders of the
principal  amount of Securities  then  outstanding  required  hereunder for such
amendment,  supplement or waiver to be effective  shall have also been given and
not revoked within such 90-day period.


                                      -15-

<PAGE>



         After an amendment, waiver or other action becomes effective,  pursuant
to  Section  901 or 902,  as the case may be, it shall  bind  every  Holder of a
Security.

                                   ARTICLE 10

                            CONVERSION OF SECURITIES

SECTION 10.1      Right of Conversion; Conversion Price.

         Subject to the provisions of Section 7 of the Securities, the Holder of
any Security or Securities shall have the right, at such Holder's option, at any
time before the close of business on October 1, 2003 (except that,  with respect
to any Security or portion of a Security  which shall be called for  redemption,
such right shall  terminate at the close of business on the second  Business Day
preceding the  Redemption  Date fixed for redemption of such Security or portion
of a Security  unless the Company shall  default in payment due upon  redemption
thereof),  to convert,  subject to the terms and  provisions of this Article 10,
the principal of any such Security or Securities or any portion thereof which is
$1,000  principal  amount or an integral  multiple  thereof  into Common  Shares
initially at the conversion  price per share of $18.00 or, in case an adjustment
of such price has taken place pursuant to the  provisions of Section 10.4,  then
at the price as last adjusted  (such price or adjusted  price being  referred to
herein as the "conversion price"), upon surrender of the Security or Securities,
the principal of which is so to be converted,  accompanied  by written notice of
conversion  duly  executed,  to the Company,  at any time during usual  business
hours at the office or agency  maintained  by it for such  purpose,  and,  if so
required  by  the  Conversion  Agent  or  Registrar,  accompanied  by a  written
instrument or  instruments  of transfer in form  satisfactory  to the Conversion
Agent  or  Registrar  duly  executed  by  the  Holder  or  his  duly  authorized
representative in writing. For convenience, the conversion of any portion of the
principal  of any  Security  or  Securities  into Common  Shares is  hereinafter
sometimes referred to as the conversion of such Security or Securities.

SECTION 10.2      Issuance of Shares on Conversion.

         As promptly as practicable after the surrender,  as herein provided, of
any Security or Securities for conversion, the Company shall deliver or cause to
be delivered at its said office or agency,  to or upon the written  order of the
Holder of the Security or Securities so surrendered,  certificates  representing
the  number of fully  paid and  nonassessable  Common  Shares  into  which  such
Security or Securities may be converted in accordance

                                      -16-

<PAGE>



with the provisions of this Article 10. Such conversion  shall be deemed to have
been  made as of the  close  of  business  on the date  that  such  Security  or
Securities shall have been surrendered for conversion by delivery thereof with a
written notice of conversion duly executed,  so that the rights of the Holder of
such Security or Securities  as a  Securityholder  shall cease at such time and,
subject to the  following  provisions of this  paragraph,  the Person or Persons
entitled  to receive  the Common  Shares  upon  conversion  of such  Security or
Securities  shall be treated for all purposes as having become the record holder
or holders of such Common  Shares at such time and such  conversion  shall be at
the conversion  price in effect at such time;  provided,  however,  that no such
surrender  on any date when the stock  transfer  books of the  Company  shall be
closed  shall be  effective  to  constitute  the Person or Persons  entitled  to
receive the Common  Shares upon such  conversion as the record holder or holders
of such Common  Shares on such date,  but such  surrender  shall be effective to
constitute  the Person or Persons  entitled to receive such Common Shares as the
record  holder or holders  thereof for all  purposes at the close of business on
the next  succeeding  day on which  such  stock  transfer  books are  open;  and
provided, further, that in such event such conversion shall be at the conversion
price in effect on the date that such  Security  or  Securities  shall have been
surrendered for conversion by delivery  thereof,  as if the stock transfer books
of the Company had not been closed.  The Company shall give or cause to be given
to the Trustee  written notice  whenever the stock transfer books of the Company
shall be closed.

         Upon  Conversion of any Security  which is converted in part only,  the
Company shall execute and the Trustee  shall  authenticate  and deliver to or on
the order of the Holder thereof,  at the expense of the Company,  a new Security
or  Securities  of  authorized  denominations  in principal  amount equal to the
unconverted portion of such Security.

SECTION 10.3      No Adjustment for Interest or Dividends.

         No payment or  adjustment  in respect of interest on the  Securities or
dividends on the Common Shares shall be made upon the conversion of any Security
or  Securities;  provided,  however,  that if a Security or any portion  thereof
shall be converted  subsequent to any regular record date and on or prior to the
next succeeding interest payment date, the interest falling due on such interest
payment date shall be payable on such interest payment date notwithstanding such
conversion,  and such interest  (whether or not punctually paid or duly provided
for) shall be paid to the Person in whose name such  Security is  registered  at
the close of business on such regular record date and Securities

                                      -17-

<PAGE>



surrendered  for conversion  during the period from the close of business on any
regular  record date to the opening of  business on the  corresponding  interest
payment date must be  accompanied  by payment of an amount equal to the interest
payable on such  interest  payment  date  (except in the case of  Securities  or
portions  thereof which are called for redemption on October 1, 1999 through and
including October 4, 1999, as to which such payment in respect of the October 1,
1999 interest payment date is not required to accompany any such Security).

SECTION 10.4      Adjustment of Conversion Price.

         (1) In  case  the  Company  shall  pay  or  make a  dividend  or  other
distribution on any class of Capital Stock of the Company in Common Shares,  the
conversion  price in effect at the opening of business on the day  following the
date fixed for the  determination  of  shareholders  entitled  to  receive  such
dividend or other distribution shall be reduced so that the same shall equal the
price determined by multiplying such conversion price by a fraction of which the
numerator  shall be the  number of  Common  Shares  outstanding  at the close of
business on the date fixed for such  determination  and the denominator shall be
the sum of such  number of shares  and the total  number of shares  constituting
such  dividend  or other  distribution,  such  adjustment  to  become  effective
immediately  after the opening of business on the day  following  the date fixed
for such determination and in the event that such dividend or other distribution
is not so made, or is made in part, the conversion price shall again be adjusted
to be the conversion price which would then be in effect (i) if such record date
has not been fixed or (ii) based on the actual number of shares actually issued,
as the case may be.

         (2) In case at any time the Company shall (A) subdivide its outstanding
Common  Shares into a greater  number of shares,  (B)  combine  its  outstanding
Common Shares into a smaller number of shares, or (C) issue by  reclassification
of its Common Shares (including any such  reclassification  in connection with a
consolidation or merger in which the Company is the continuing  corporation) any
shares of Capital Stock, the conversion price in effect at the effective date of
such  subdivision,  combination  or  reclassification  shall be  proportionately
adjusted so that the holder of any Security  surrendered  for  conversion  after
such time shall be entitled to receive the  aggregate  number and kind of shares
which,  if such Security had been converted  immediately  prior to such time, he
would have owned upon such  conversion  and been  entitled to receive  upon such
subdivision,  combination  or  reclassification.  Such  adjustment  shall become
effective immediately after the effective date of such subdivision,  combination
or reclassification. Such adjustment shall be made

                                      -18-

<PAGE>



successively whenever any event listed above shall occur.

         (3) In case at any time the  Company  shall  fix a record  date for the
issuance of rights,  options or  warrants  to all  holders of its Common  Shares
entitling  them to  subscribe  for or  purchase  Common  Shares  (or  securities
convertible  into  Common  Shares)  at a price per share  less than the  current
market  price per Common  Share on such record  date,  the  conversion  price in
effect at the opening of business on the day following such record date shall be
reduced so that the same shall equal the price  determined by  multiplying  such
conversion  price by a fraction  of which the  numerator  shall be the number of
Common Shares  outstanding at the close of business on such record date plus the
number of Common Shares (or its equivalent)  which the aggregate of the offering
price of the total  number of shares so offered  for  subscription  or  purchase
would purchase at such current market price per Common Share and the denominator
shall be the number of Common  Shares  outstanding  at the close of  business on
such record date plus the number of Common Shares (or its equivalent) so offered
for  subscription or purchase,  such reduction to become  effective  immediately
after the opening of business on the day following  such record date;  provided,
however,  that no adjustment to the  conversion  price shall be made pursuant to
this Section  10.4(3) if the holders of Securities  receive,  or are entitled to
receive upon  conversion or otherwise,  the same rights,  options or warrants as
are issued to the holders of Common Shares,  on the same terms and conditions as
such rights,  options or warrants are so issued to the holders of Common Shares.
Such reduction shall be made successively  whenever such a record date is fixed;
and in the event that such rights, options or warrants are not so issued, or are
issued in part, or are issued but all or part of which expire  unexercised,  the
conversion  price shall again be adjusted to be the conversion price which would
then be in effect  (i) if such  record  date had not been fixed or (ii) based on
the actual number of rights,  options or warrants  actually issued,  as the case
may be.

         (4) In case at any time the  Company  shall  fix a record  date for the
making of a distribution, by dividend or otherwise, to all holders of its Common
Shares,  of shares of beneficial  interest in  Hospitality  Properties  Trust, a
Maryland  real  estate  investment  trust  ("HPT"),  then in each  such case the
conversion  price in effect  after  such  record  date  shall be  determined  by
multiplying the conversion price in effect immediately prior to such record date
by a fraction,  of which the numerator  shall be the total number of outstanding
Common Shares  multiplied  by the current  market price per Common Share on such
record date,  less the fair market value (as  determined by a Board  Resolution,
whose

                                      -19-

<PAGE>



determination  shall be conclusive  and described in a statement  filed with the
Trustee) of the shares of beneficial  interest in HPT so to be distributed,  and
of which the denominator shall be the total number of outstanding  Common Shares
multiplied by such current market price per Common Share.  Such adjustment shall
be made  successively  whenever  such a record  date is fixed and  shall  become
effective   immediately   after  the  record  date  for  the   determination  of
stockholders  entitled to receive the  distribution;  and in the event that such
distribution is not so made, the conversion  price shall again be adjusted to be
the  conversion  price which would then be in effect if such record date has not
been fixed.


         (5) For the purpose of any computation under paragraphs (3) and (4) for
this  Section,  the current  market  price per share of Common Stock on any date
shall be deemed to be the average of the Closing  Prices for the 15  consecutive
Business Days selected by the Company  commencing  not more than 30 and not less
than 20 Business Days before the date in question.

         (6) No adjustment in the conversion price shall be required unless such
adjustment (plus any adjustments not previously made by reason of this paragraph
(6))  would  require  an  increase  or  decrease  of at least 1% in such  price;
provided,  however,  that any adjustments  which by reason of this paragraph (6)
are not  required to be made shall be carried  forward and taken into account in
any subsequent  adjustment.  All calculations  under this paragraph (6) shall be
made to the nearest cent.

         (7) The Company may, but shall not be required to, make such reductions
in the  conversion  price,  in addition to those required by paragraph (1), (2),
(3) and (4) of this Section 10.4 as the Company's  Board of Directors  considers
to be  advisable  in order to avoid or diminish any income tax to any holders of
shares of Common Stock  resulting from any dividend or  distribution of stock or
issuance of rights or warrants  to purchase or  subscribe  for stock or from any
event  treated as such for income tax  purposes  or for any other  reasons.  The
Board of Directors  shall have the power to resolve any ambiguity or correct any
error in the  adjustments  made pursuant to this Section 10.4 and its actions in
so doing shall be final and conclusive.


                                      -20-

<PAGE>



         (8) The  adjustments  provided  for in this  Section 10.4 shall be made
successively whenever any event listed above shall occur.

SECTION 10.5      Notice of Adjustment of Conversion Price.

         Whenever the conversion  price for the Securities is adjusted as herein
provided:

                  (1) the Company shall compute the adjusted conversion price in
         accordance with Section 10.4 and shall prepare an Officers' Certificate
         setting forth the adjusted  conversion  price and showing in reasonable
         detail  the  facts  upon  which  such   adjustment  is  based  and  the
         computation  thereof,  and such certificate shall forthwith be filed at
         each office or agency  maintained  for the purpose of conversion of the
         Securities pursuant to Section 2.4 and with the Trustee; and

                  (2) a  notice  stating  that  the  conversion  price  has been
         adjusted and setting forth the adjusted  conversion price shall as soon
         as  practicable  be  mailed  by  the  Company  to  all  Holders  of the
         Securities at their last addresses as they shall appear in the Security
         Register.

                  (3) If the conversion  price is adjusted and the Company fails
         to file an  Officers'  Certificate  with the  Trustee  as  provided  by
         Section 10.5(1) and the Trustee is acting as the Conversion  Agent, the
         Trustee shall be entitled to rely  conclusively on the conversion price
         set forth in the Officer's  Certificate  most recently  received by the
         Trustee (or as set forth in the  Securities  and this  Indenture if the
         conversion price shall not have been adjusted).

SECTION 10.6      Notice of Certain Corporate Action.

         (1)  In case:

                  (a) the Company shall authorize the granting to holders of its
         Common Shares of rights or warrants  entitling them to subscribe for or
         purchase  any  shares  of  Capital  Stock of any  class or of any other
         rights; or

                  (b)  of  any  reclassification  of the  Common  Shares  of the
         Company,  or of any  distribution  of any assets of the  Company to the
         holders  of its Common  Shares,  or of any  consolidation  or merger to
         which the Company is a party and for which approval of any shareholders
         of the  Company  is  required,  or of the  sale or  transfer  of all or
         substantially all of the assets of the Company; or

                                      -21-

<PAGE>



                  (c)  of the voluntary or involuntary dissolution,
         liquidation or winding up of the Company;

then the Company shall cause to be filed at each office or agency maintained for
the purpose of  conversion of the  Securities  pursuant to Section 2.2 and shall
cause to be mailed to the  Trustee and all  Holders of the  Securities  at their
last addresses as they shall appear in the Security  Register,  at least 20 days
(or 10 days in any case  specified  in  clause  (a) or (b)  above)  prior to the
applicable record date hereinafter  specified,  a notice stating (x) the date on
which a record is to be taken for the  purpose of such  dividend,  distribution,
rights or warrants, or, if a record is not to be taken, the date as of which the
Holders  of  Common   Shares  of  record  to  be  entitled  to  such   dividend,
distribution,  rights or warrants are to be determined, or (y) the date on which
such  reclassification,  consolidation,  merger,  sale,  transfer,  dissolution,
liquidation  or winding up is expected to become  effective,  and the date as of
which it is expected  that holders of Common  Shares of record shall be entitled
to  exchange  their  Common  Shares  for  securities,  cash  or  other  property
deliverable upon such reclassification,  consolidation,  merger, sale, transfer,
dissolution,  liquidation  or winding up. Such notice  shall also state  whether
such  transaction  will  result  in  any  adjustment  in  the  conversion  price
applicable  to the  Securities  and,  if  so,  shall  state  what  the  adjusted
conversion price will be and when it will become effective.  Neither the failure
to give the notice  required by this  Section,  nor any defect  therein,  to any
particular  Holder shall affect the sufficiency of the notice or the legality or
validity of any such dividend, distribution,  right, warrant,  reclassification,
consolidation,  merger, sale, transfer, liquidation,  dissolution or winding-up,
or the vote on any action authorizing such with respect to the other holders.

         (2) In case the Company or any  Affiliate of the Company  shall propose
to engage in a "Rule  13e-3  Transaction"  as defined in the  Commission's  Rule
13e-3 under the Exchange Act, the Company shall, no later than the date on which
any information with respect to such Rule 13e-3 Transaction is first required to
be given to the  Commission  or any other  Person  pursuant  to such Rule 13e-3,
cause to be mailed to all Holders at their last  addresses  as they shall appear
in the Security Register,  a copy of all information required to be given to the
holders  of the  Company's  Capital  Stock  pursuant  to such  Rule  13e-3.  The
information  required to be given under this  paragraph  shall be in addition to
and not in lieu of any other  information  required  to be given by the  Company
pursuant to this Section 10.6 or any other  provision of the  Securities or this
Indenture.

                                      -22-

<PAGE>




SECTION 10.7      Taxes on Conversions.

         The  Company  will pay any and all stamp or  similar  taxes that may be
payable in respect of the issuance or delivery of Common Shares on conversion of
the Securities  pursuant hereto. The Company shall not, however,  be required to
pay any tax which may be  payable in respect  of any  transfer  involved  in the
issuance and  delivery of Common  Shares in a name other than that of the Holder
of the Security or Securities to be converted,  and no such issuance or delivery
shall be made unless and until the Person  requesting  such issuance has paid to
the Company the amount of any such tax, or has  established to the  satisfaction
of the Company that such tax has been paid.

SECTION 10.8      Fractional Shares.

         No fractional shares or scrip  representing  fractional shares shall be
issued upon any  conversion  of the  Securities.  If any such  conversion  would
otherwise  require the  issuance of a  fractional  share an amount equal to such
fraction  multiplied by the current market price per Common Share (determined as
provided in paragraph  (5) of Section  10.4) on the day of  conversion  shall be
paid to the Holder in cash by the Company.

SECTION 10.9      Cancellation of Converted Securities.

         All  Securities  delivered  for  conversion  shall be  delivered to the
Trustee or the  Conversion  Agent to be canceled by or at the  direction  of the
Trustee or the Conversion Agent,  which shall dispose of the same as provided in
Section 309 of the Indenture.

SECTION           10.10 Provisions in Case of  Consolidation,  Merger or Sale of
                  Assets.

         (1) In case of any  consolidation of the Company with, or merger of the
Company into,  any Person,  or in case of any merger of another  Person into the
Company  (other  than a  consolidation  or merger  which  does not result in any
reclassification,  conversion,  exchange or cancellation  of outstanding  Common
Shares),  or in case of any sale or transfer of all or substantially  all of the
assets of the Company, the Person formed by such consolidation or resulting from
such merger or which acquires such assets, as the case may be, shall execute and
deliver to the Trustee a  supplemental  indenture  providing  that the Holder of
each  Security  then  outstanding  shall have the right  thereafter,  during the
period such  Security  shall be  convertible  as  specified  in Section  10.1 to
convert  such  Security  only into the kind and amount of  securities,  cash and
other property receivable upon such

                                      -23-

<PAGE>



consolidation,  merger,  sale or  transfer  by a holder of the  number of Common
Shares into which such Security might have been converted  immediately  prior to
such consolidation,  merger, sale or transfer. Such supplemental indenture shall
provide for adjustments  which,  for events  subsequent to the effective date of
such supplemental indenture, shall be as nearly equivalent as may be practicable
to the adjustments provided for in this Article 10. The above provisions of this
Section 10.10 shall similarly apply to successive consolidations, mergers, sales
or transfers.

         (2) The Trustee shall not be under any  responsibility to determine the
correctness  of any  provisions  contained  in any such  supplemental  indenture
relating  either  to the kind or amount  of  shares  of stock or  securities  or
property receivable by Holders upon the conversion of their Securities after any
such reclassification,  change, consolidation,  merger, sale or conveyance or to
any adjustment to be made with respect thereto.

SECTION 10.11     Disclaimer  by Trustee of  Responsibility  for  Certain
                  Matters.

         The Trustee and each  Conversion  Agent  (other than the Company or any
Subsidiary)  shall  not at any time be under any duty or  responsibility  to any
Holder of the Securities to determine  whether any facts exist which may require
any adjustment of the conversion  price,  how it should be calculated or what it
should be, or with respect to the nature or extent of any such  adjustment  when
made, or with respect to the method  employed,  or herein or in any supplemental
indenture  provided  to be  employed,  in making the same.  The Trustee and each
Conversion  Agent  (other  than the  Company  or any  Subsidiary)  shall  not be
accountable  with respect to the validity,  value,  kind or amount of any Common
Shares,  or of any  securities  or property,  which may at any time be issued or
delivered  upon the conversion of any Security;  and it makes no  representation
with  respect  thereto.  The Trustee and each  Conversion  Agent (other than the
Company  or any  Subsidiary)  shall not be  responsible  for any  failure of the
Company to issue, transfer or deliver any Common Shares or share certificates or
other  securities or property upon the surrender of any Security for the purpose
of conversion or, subject to Section 7.1, to comply with any of the covenants of
the Company contained in this Article 10.

                                      -24-

<PAGE>




SECTION 10.12     Covenant to Reserve Shares.

         The  Company  covenants  that it will at all  times  reserve  and  keep
available,  free from preemptive  rights,  out of its authorized  Common Shares,
solely for the purpose of issuance upon  conversion of the  Securities as herein
provided,  such  number of  Common  Shares as shall  then be  issuable  upon the
conversion of all outstanding Securities.  The Company covenants that all Common
Shares which shall be so issuable shall be, when issued, duly and validly issued
and fully paid and  non-assessable.  For  purposes of this  Section  10.12,  the
number of Common Shares which shall be  deliverable  upon the  conversion of all
outstanding  Securities  shall be computed as if at the time of computation  all
outstanding Securities were held by a single holder.

                                   ARTICLE 11

                                  SUBORDINATION

SECTION 11.1      Securities Subordinated to Senior Indebtedness.

         The Company and each Holder,  by its  acceptance of  Securities,  agree
that (a) the payment of the principal of and interest on the  Securities and (b)
any other  payment  in respect of the  Securities,  including  on account of the
acquisition or redemption of the Securities by the Company is  subordinated,  to
the extent and in the manner  provided in this Article 11, to the prior  payment
in full of all Senior Indebtedness of the Company,  and all other Obligations in
respect  thereof,  whether  outstanding  at  the  date  of  this  Supplement  or
thereafter   created,   incurred,   assumed  or   guaranteed,   and  that  these
subordination   provisions  are  for  the  benefit  of  the  holders  of  Senior
Indebtedness.

         This Article 11 shall constitute a continuing offer to all Persons who,
in reliance upon such provisions, become holders of, or continue to hold, Senior
Indebtedness,  and such  provisions  are made for the  benefit of the holders of
Senior Indebtedness, and such holders are made obligees hereunder and any one or
more of them may enforce such provisions.

         To the  extent  any  provision  of  this  Article  11  conflicts  or is
inconsistent  with any other provision of the Indenture or this Supplement,  the
provisions of this Article 11 shall govern and supersede  such  inconsistent  or
conflicting provision.


                                      -25-

<PAGE>



SECTION 11.2      No Payment on Securities in Certain Circumstances.

         (a) No payment may be made by the  Company on account of the  principal
of, premium, if any, interest on the Securities, or to acquire or repurchase any
of the  Securities  for  cash  or  property,  or on  account  of the  redemption
provisions of the Securities,  in each case other than payments made with Junior
Securities of the Company,  (i) upon the maturity of any Senior  Indebtedness of
the Company by lapse of time, acceleration (unless waived) or otherwise,  unless
and until all  principal  of,  premium,  if any,  and  interest  on such  Senior
Indebtedness and all other obligations in respect thereof are first paid in full
(or such payment is duly  provided  for), or (ii) in the event of default in the
payment of any  principal  of,  premium,  if any, or  interest  on, or any other
obligation in respect of, any Senior Indebtedness of the Company when it becomes
due and  payable,  whether at maturity or at a date fixed for  prepayment  or by
declaration  or otherwise (a "Payment  Default"),  unless and until such Payment
Default has been cured or waived by the holders of such Senior  Indebtedness  or
otherwise has ceased to exist.

         (b) Upon (i) the happening of an event of default (other than a Payment
Default)  that  permits  the  holders  of  any  Senior   Indebtedness  or  their
representative immediately to accelerate its maturity and (ii) either such event
of default shall be the subject of a judicial  proceeding  or written  notice of
such event of default  given to the  Company  by the  requisite  holders of such
Senior Indebtedness or their  representative (a "Payment Notice"),  then, unless
and until  such  event of  default  has been  cured or  waived by the  requisite
holders of such Senior Indebtedness or otherwise has ceased to exist, no payment
(by set-off or otherwise)  may be made by or on behalf of the Company on account
of the principal of, premium, if any, interest on the Securities,  or to acquire
or repurchase any of the  Securities for cash or property,  or on account of the
redemption  provisions of the  Securities,  in any such case other than payments
made with Junior Securities of the Company.

         (c) In  furtherance  of the  provisions  of Section  11.1, in the event
that, notwithstanding the foregoing provisions of this Section 11.2, any payment
or distribution of assets of the Company (other than Junior Securities) shall be
received by the  Trustee or the Holders or any Paying  Agent at a time when such
payment or  distribution  is prohibited by the  provisions of this Section 11.2,
then such  payment or  distribution  shall be received  and held in trust by the
Trustee or such Holders or Paying Agent (or, if the Company or any  Affiliate of
the  Company is acting as its own Paying  Agent,  money for any such  payment or
distribution shall be segregated or held in trust) for the benefit of the

                                                      -26-

<PAGE>



holders of Senior Indebtedness of the Company, and shall be paid or delivered by
the  Trustee or such  Holders or such Paying  Agent,  as the case may be, to the
holders of Senior Indebtedness of the Company remaining unpaid or unprovided for
or their representative or representatives,  or to the trustee or trustees under
any indenture  pursuant to which any  instruments  evidencing any of such Senior
Indebtedness  of the  Company may have been  issued,  ratably  according  to the
aggregate amounts remaining unpaid on account of the Senior  Indebtedness of the
Company  held or  represented  by each,  for  application  to the payment of all
Senior Indebtedness of the Company in full after giving effect to any concurrent
payment and distribution to the holders of such Senior Indebtedness, but only to
the extent  that as to any holder of such  Senior  Indebtedness,  as promptly as
practical following receipt by such holder of written notice from the Trustee to
the holders of such Senior  Indebtedness  that such prohibited  payment has been
received by the Trustee,  Holder(s) or Paying Agent (or has been  segregated  as
provided above), such holder (or a representative therefor) notifies the Trustee
in writing of the  amounts  then due and owing on such Senior  Indebtedness,  if
any,  held by such holder and only the amounts  specified in such notices to the
Trustee shall be paid to the holders of such Senior Indebtedness.

SECTION 11.3      Securities Subordinated to Prior Payment of All Senior
                  Indebtedness on Dissolution, Liquidation or Reorganization.

         Upon any  distribution  of assets of the Company upon any  dissolution,
winding up,  total or partial  liquidation  or  reorganization  of the  Company,
whether voluntary or involuntary, in bankruptcy,  insolvency,  receivership or a
similar  proceeding  or upon  assignment  for the  benefit of  creditors  or any
marshalling of assets or liabilities:

         (a) the holders of all Senior  Indebtedness  of the Company shall first
be entitled to receive payments in full (or have such payment duly provided for)
before  the  Holders  are  entitled  to  receive  any  payment on account of the
principal of, premium,  if any, interest on, and Additional Amounts with respect
to, the Securities (other than Junior Securities);

         (b) any payment or distribution of assets of the Company of any kind or
character,   whether  in  cash,   property  or  securities  (other  than  Junior
Securities)  to which the Holders or the Trustee on behalf of the Holders  would
be entitled (by set-off or otherwise), except for the provisions of this Article
11, shall be paid by the  liquidating  trustee or agent or other  Person  making
such a payment or distribution directly to the holders of

                                      -27-

<PAGE>



Senior  Indebtedness  of the  Company  or  their  representative  to the  extent
necessary  to make  payment in full of all such  Senior  Indebtedness  remaining
unpaid,  after giving effect to any concurrent  payment or  distribution  to the
holders of such Senior Indebtedness; and

         (c) in the event that,  notwithstanding  the foregoing,  any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities (other than Junior Securities),  shall be received by the
Trustee or the Holders or any Paying Agent (or, if the Company or any  Affiliate
of the Company is acting as its own Paying Agent,  money for any such payment or
distribution  shall be  segregated or held in trust) on account of the principal
of,  premium,  if any,  interest on, or Additional  Amounts with respect to, the
Securities  before all Senior  Indebtedness of the Company is paid in full, such
payment or  distribution  shall be received  and held in trust by the Trustee or
such Holder or Paying Agent (or, if the Company or any  Affiliate of the Company
is acting as its own Paying  Agent,  money for any such payment or  distribution
shall be  segregated  or held in trust) for the  benefit of the  holders of such
Senior  Indebtedness,  or their  respective  representative,  or the  trustee or
trustees under any indenture pursuant to which any instruments evidencing any of
such Senior Indebtedness of the Company may have been issued,  ratably according
to the  respective  amounts of such Senior  Indebtedness  held or represented by
each,  to the extent  necessary to make  payment as provided  herein of all such
Senior  Indebtedness  remaining  unpaid  after giving  effect to all  concurrent
payments and distributions and all provisions  therefor to or for the holders of
such Senior  Indebtedness,  but only to the extent that as to any holder of such
Senior  Indebtedness,  as promptly as practical following receipt by such holder
of written  notice from the  Trustee to the holders of such Senior  Indebtedness
that such  prohibited  payment has been  received by the  Trustee,  Holder(s) or
Paying  Agent (or has been  segregated  as  provided  above),  such holder (or a
representative therefor) notifies the Trustee in writing of the amounts then due
and owing on such Senior Indebtedness,  if any, held by such holder and only the
amounts specified in such notices to the Trustee shall be paid to the holders of
such Senior Indebtedness.

SECTION 11.4      Securityholders to Be Subrogated to Rights of
                  Holders of Senior Indebtedness.

         Subject  to the  payment  in full  of all  Senior  Indebtedness  of the
Company as provided herein, the Holders of Securities shall be subrogated to the
rights of the  holders  of such  Senior  Indebtedness  to  receive  payments  or
distributions  of assets of the Company  applicable  to the Senior  Indebtedness
until all

                                      -28-

<PAGE>



amounts owing on the  Securities  shall be paid in full,  and for the purpose of
such subrogation no such payments or distributions to the holders of such Senior
Indebtedness by the Company, or by or on behalf of the Holders by virtue of this
Article  11,  which  otherwise  would have been made to the  Holders  shall,  as
between the Company and the  Holders,  be deemed to be payment by the Company on
account of such Senior Indebtedness,  it being understood that the provisions of
this  Article 11 are and are  intended  solely for the purpose of  defining  the
relative rights of the Holders,  on the one hand, and the holders of such Senior
Indebtedness, on the other hand.

         If any payment or  distribution  to which the Holders  would  otherwise
have been  entitled  but for the  provisions  of this Article 11 shall have been
applied,  pursuant  to the  provisions  of this  Article  11, to the  payment of
amounts payable under Senior Indebtedness of the Company, then the Holders shall
be entitled to receive from the holders of such Senior Indebtedness any payments
or  distributions  received by such holders of Senior  Indebtedness in excess of
the amount  sufficient  to pay all amounts  payable  under or in respect of such
Senior Indebtedness in full.

SECTION 11.5      Obligations of the Company Unconditional.

         Nothing contained in this Article 11 or elsewhere in this Supplement or
in the  Securities is intended to or shall impair as between the Company and the
Holders,   the   obligation   of  each  such  Person,   which  is  absolute  and
unconditional, to pay to the Holders the principal of, premium, if any, interest
on, and Additional  Amounts with respect to, the Securities as and when the same
shall become due and payable in accordance  with their terms,  or is intended to
or shall affect the relative  rights of the Holders and creditors of the Company
other than the holders of the Senior Indebtedness,  nor shall anything herein or
therein prevent the Trustee or any Holder from exercising all remedies otherwise
permitted by applicable  law upon default under this  Indenture,  subject to the
rights, if any, under this Article 11, of the holders of Senior  Indebtedness in
respect  of cash,  property  or  securities  of the  Company  received  upon the
exercise of any such  remedy.  Notwithstanding  anything to the contrary in this
Article  11 or  elsewhere  in this  Supplement  or in the  Securities,  upon any
distribution  of assets of the  Company  referred  to in this  Article  11,  the
Trustee, subject to the provisions of Sections 602 and 612 of the Indenture, and
the Holders shall be entitled to rely conclusively upon any order or decree made
by any court of competent  jurisdiction in which such  dissolution,  winding up,
liquidation or reorganization  proceedings are pending,  or a certificate of the
liquidating

                                      -29-

<PAGE>



trustee or agent or other Person  making any  distribution  to the Trustee or to
the Holders for the purpose of ascertaining  the Persons entitled to participate
in  such  distribution,  the  holders  of  the  Senior  Indebtedness  and  other
Indebtedness of the Company,  the amount thereof or payable thereon,  the amount
or amounts paid or distributed  thereon and all other facts pertinent thereto or
to this Article 11 so long as such court has been apprised of the provisions of,
or the order,  decree or certificate  makes reference to, the provisions of this
Article 11. The Trustee shall be entitled to rely  conclusively  on the delivery
to it of a written  notice by a person  representing  himself  to be a holder of
Senior Indebtedness (or a trustee or representative on behalf of such holder) to
establish  that such a notice has been given by a holder of Senior  Indebtedness
(or a trustee or representative on behalf of such holder). In the event that the
Trustee  determines,  in good faith,  that  further  evidence  is required  with
respect  to the  right of any  person  as a holder  of  Senior  Indebtedness  to
participate  in any payment or  distribution  pursuant  to this  Article 11, the
Trustee  may  request  such  person  to  furnish   evidence  to  the  reasonable
satisfaction of the Trustee as to the amount of Senior Indebtedness held by such
person, as to the extent to which such person is entitled to participate in such
payment or  distribution,  and as to other facts pertinent to the rights of such
person under this Article 11, and if such evidence is not furnished, the Trustee
may defer any payment to such person pending  judicial  determination  as to the
right of such person to receive such  payment.  Nothing in this Article 11 shall
apply to the claims of, or payments to, the Trustee under or pursuant to Section
606 of the Indenture.

SECTION 11.6      Trustee Entitled to Assume Payments Not Prohibited
                  in Absence of Notice.

         The Trustee or any Paying Agent  (other than the Company  acting as its
own  Paying  Agent)  shall  not at any time be  charged  with  knowledge  of the
existence  of any facts which would  prohibit the making of any payment to or by
the Trustee or such Paying Agent unless and until a Trust Officer of the Trustee
or such Paying Agent (other than the Company acting as its own Paying Agent), as
the case may be,  shall have  received,  no later than one Business Day prior to
such  payment,  written  notice  thereof  from the  Company  or from one or more
holders of Senior Indebtedness or from any representative therefor and, prior to
the receipt of any such written notice,  the Trustee,  subject to the provisions
of  Sections  602 and 612 of the  Indenture,  and  such  Paying  Agent  shall be
entitled in all respects conclusively to assume that no such fact exists.


                                      -30-

<PAGE>



SECTION 11.7      Application by Trustee of Assets Deposited with It.

         Any deposit of assets with the Trustee or the Agent  (whether or not in
trust) for the payment of  principal of or interest  on, or  Additional  Amounts
with respect to, any  Securities  shall be subject to the provisions of Sections
11.1, 11.2, 11.3 and 11.4; provided that, if prior to one Business Day preceding
the date on which by the terms of this  Supplement  any such  assets  may become
distributable for any purpose  (including,  without  limitation,  the payment of
either  principal of or interest on any  Security) the Trustee or a Paying Agent
shall not have received with respect to such assets the written notice  provided
for in Section 11.6, then the Trustee or such Paying Agent shall have full power
and  authority  to receive  such assets and to apply the same to the purpose for
which  they  were  received,  and  shall not be  affected  by any  notice to the
contrary which may be received by it on or after such date.

SECTION 11.8      Subordination Rights Not Impaired by Acts or Omissions of the
                  Company or Holders of Senior Indebtedness.

         No right of any present or future holders of any Senior Indebtedness to
enforce subordination  provisions contained in this Article 11 shall at any time
in any way be prejudiced or impaired by any act or failure to act on the part of
the Company or by any act or failure to act, in good faith,  by any such holder,
or by any  noncompliance  by the  Company  with the  terms  of this  Supplement,
regardless  of any  knowledge  thereof  which  any  such  holder  may have or be
otherwise  charged with. The holders of Senior  Indebtedness may extend,  renew,
modify or amend the terms of the Senior  Indebtedness  or any security  therefor
and release,  sell or exchange such security and otherwise  deal freely with the
Company, all without affecting the liabilities and obligations of the parties to
this Indenture or the Holders.

SECTION 11.9      Securityholders Authorize Trustee to Effectuate
                  Subordination of Securities.

         Each Holder of the Securities by his acceptance  thereof authorizes and
expressly  directs  the  Trustee  on his  behalf to take  such  action as may be
necessary or appropriate to effectuate the subordination provisions contained in
this  Article  11 and to  protect  the rights of the  Holders  pursuant  to this
Supplement,  and appoints  the Trustee its  attorney-in-fact  for such  purpose,
including,  in  the  event  of  any  dissolution,  winding  up,  liquidation  or
reorganization of the Company (whether in bankruptcy, insolvency or receivership
proceedings or upon an

                                      -31-

<PAGE>



assignment for the benefit of creditors of the Company),  the making of a timely
filing of a claim for the unpaid  balance of its Securities in the form required
in said proceedings and cause said claim to be approved. If the Trustee does not
file a proper  claim or proof of debt in the form  required  in such  proceeding
prior to 30 days before the expiration of the time to file such claim or claims,
then the holders of the Senior  Indebtedness or their  representative  are or is
hereby  authorized to have the right to file and are or is hereby  authorized to
file an appropriate  claim for and on behalf of the Holders of said  Securities.
Nothing herein contained shall be deemed to authorize the Trustee or the holders
of Senior  Indebtedness  or their  representative  to authorize or consent to or
accept  or adopt on  behalf of any  Securityholder  any plan of  reorganization,
arrangement, adjustment or composition affecting the Securities or the rights of
any  Holder  thereof,  or to  authorize  the  Trustee  or the  holders of Senior
Indebtedness  or their  representative  to vote in  respect  of the claim of any
Securityholder in any such proceeding.

SECTION 11.10     Right of Trustee to Hold Senior Indebtedness.

         The  Trustee  shall be  entitled to all of the rights set forth in this
Article 11 in respect of any Senior  Indebtedness  at any time held by it to the
same  extent as any other  holder of Senior  Indebtedness,  and  nothing in this
Supplement  shall be  construed  to deprive  the Trustee of any of its rights as
such holder.

SECTION 11.11     Article 11 Not to Prevent Events of Default.

         The failure to make a payment on account of principal of,  premium,  if
any,  interest on, or  Additional  Amounts with  respect to, the  Securities  by
reason of any  provision of this Article 11 shall not be construed as preventing
the  occurrence  of a Default or an Event of Default  under  Section  501 of the
Indenture or in any way prevent the Holders or the Trustee from  exercising  any
right or remedy hereunder or at law or in equity other than the right to receive
payment on the Securities in accordance with the terms of this Article 11.

SECTION 11.12     No Fiduciary Duty of Trustee to Holders of Senior
                  Indebtedness.

         The  Trustee  shall  not be  deemed  to owe any  fiduciary  duty to the
holders  of Senior  Indebtedness,  and  shall not be liable to any such  holders
(other than for its willful  misconduct or negligence) if it shall in good faith
mistakenly pay over or distribute to the Holders of Securities or the Company or
any other Person, cash, property or securities to which any holders

                                      -32-

<PAGE>



of  Senior  Indebtedness  shall be  entitled  by virtue  of this  Article  11 or
otherwise.  Nothing in this  Section  11.12 shall affect the  obligation  of any
other  such  Person to hold such  payment  for the  benefit  of, and to pay such
payment over to, the holders of Senior  Indebtedness or their  representative in
accordance with the provisions hereof.

                                   ARTICLE 12

                                  MISCELLANEOUS

SECTION 12.1      Trust Indenture Act Controls.

         If any provision of this Indenture limits,  qualifies or conflicts with
another provision which is required to be included in this Indenture by the TIA,
the  required  provisions  shall  control.  The  provisions  of TIA Sections 310
through  317  that  impose  duties  on  any  Person  (including  the  provisions
automatically   deemed  included  herein  unless  expressly   excluded  by  this
Indenture)  are a part of and govern this  Indenture,  whether or not physically
contained herein.

SECTION 12.2      Communications by Holders with Other Holders.

         Securityholders  may communicate  pursuant to TIA ss. 312(b) with other
Securityholders  with  respect  to their  rights  under  this  Indenture  or the
Securities.  The Company,  the Trustee, the Registrar and anyone else shall have
the protection of TIA ss. 312(c).

SECTION 12.3      Governing Law.

         The  laws  of The  Commonwealth  of  Massachusetts  shall  govern  this
Supplement and the Securities without regard to principles of conflicts of law.

SECTION 12.4      No Adverse Interpretation of Other Agreements.

         This Supplement may not be used to interpret another indenture, loan or
debt agreement of the Company or a Subsidiary.  Any such indenture, loan or debt
agreement may not be used to interpret this Supplement.

                                      -33-

<PAGE>




SECTION 12.5      Successors.

         All covenants and agreements of the Company in this  Supplement and the
Securities shall bind its successors and assigns.  All agreements of the Trustee
in this Indenture shall bind its successors and assigns.

SECTION 12.6      Multiple Counterparts.

         The parties may sign multiple  counterparts  of this  Supplement.  Each
signed  counterpart  shall  be  deemed  an  original,  but all of them  together
represent the same agreement.

SECTION 12.7      Headings, etc.

         The headings of the Articles and Sections of this  Supplement have been
inserted for  convenience  of reference  only,  are not to be  considered a part
hereof,  and shall in no way modify or restrict  any of the terms or  provisions
hereof.

SECTION 12.8      Severability.

         In case any provision in this Supplement or in the Securities  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining  provisions shall not in any way be affected or impaired  thereby,
and a Holder shall have no claim therefor against any party hereto.



                                      -34-

<PAGE>



         IN WITNESS  WHEREOF,  the parties hereto have caused this Supplement to
be duly executed, all as of the date first written above.

                                      HEALTH AND RETIREMENT PROPERTIES TRUST
                                      a Maryland real estate investment trust



                                      By: /S/ Ajay Saini
                                Name: Ajay Saini
                               Title: Treasurer and Chief Financial Officer


                                      FLEET NATIONAL BANK,
                                        as Trustee



                                      By: /S/ Robert L. Bice II
                                Name: Robert L. Bice II
                               Title: Vice President

                                      -35-

<PAGE>



                                    EXHIBIT A

Unless  and  until  it is  exchanged  in  whole  or in part  for  Securities  in
definitive  form, this Security may not be transferred  except as a whole by the
Depository to a nominee of the  Depository or by a nominee of the  Depository to
the Depository or another  nominee of the Depository or by the Depository or any
such  nominee  to  a  successor  Depository  or  a  nominee  of  such  successor
Depository. Unless this certificate is presented by an authorized representative
of The Depository Trust Company,  a New York  corporation (55 Water Street,  New
York,  New  York)  ("DTC"),  to the  issuer or its  agent  for  registration  of
transfer,  exchange or payment,  and any certificate issued is registered in the
name of Cede & Co.  or such  other  name as may be  requested  by an  authorized
representative  of DTC  (and any  payment  is made to Cede & Co.  or such  other
entity  as may  be  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.1

IF NECESSARY TO EFFECT  COMPLIANCE BY THE COMPANY WITH THE  REQUIREMENTS  OF THE
UNITED STATES INTERNAL REVENUE CODE OF 1986, AS AMENDED, RELATING TO REAL ESTATE
INVESTMENT  TRUSTS,   OWNERSHIP  OF  THE  SECURITY  REPRESENTED  HEREBY  MAY  BE
RESTRICTED BY THE COMPANY AND/OR THE TRANSFER  HEREOF MAY BE PROHIBITED,  AS SET
FORTH MORE FULLY ON THE REVERSE HEREOF.



                     HEALTH AND RETIREMENT PROPERTIES TRUST

                7.25% Convertible Subordinated Debenture Due 2001


HEALTH AND RETIREMENT PROPERTIES TRUST, a Maryland real estate
investment trust, promises to pay to


7.25%                       S P E C I M E N               7.25%
DUE 2001                                               DUE 2001


or registered assigns, the principal sum of__________ Dollars, on
October 1, 2001
- --------
1 This  paragraph  should be included  only if the  Security is issued in global
form.

                                       A-1

<PAGE>




                  Interest Payment Dates: April 1 and October 1
                     Record Dates: March 15 and September 15


Additional  provisions  of this  Security  are set  forth on other  side of this
Security.


Dated:

HEALTH AND RETIREMENT PROPERTIES TRUST                                      SEAL


By:___________________________________



By:___________________________________



CERTIFICATE OF  AUTHENTICATION
FLEET NATIONAL BANK, as Trustee,
certifies that this is one of the
Securities referred to in the
within mentioned Indenture.


By:__________________________________

Authorized Signatory



                                       A-2

<PAGE>



                          [FORM OF REVERSE OF SECURITY]

                     HEALTH AND RETIREMENT PROPERTIES TRUST
                7.25% Convertible Subordinated Debenture Due 2001


         1. Interest.  Health and Retirement  Properties  Trust, a Maryland real
estate  investment  trust  (the  "Company"),  promises  to pay  interest  on the
principal amount of this Security at the rate per annum shown above. The Company
will pay interest  semiannually  on April 1 and October 1 of each year beginning
April 1, 1997.  Interest on the Securities will accrue from the most recent date
to which  interest has been paid or, if no interest has been paid,  from October
1, 1996;  provided  that,  if there is no  existing  Default  in the  payment of
interest,  and if this Security is authenticated  between a record date referred
to on the face hereof and the next succeeding  interest  payment date,  interest
shall accrue from such interest  payment date.  Interest will be computed on the
basis of a 360 day year of twelve 30-day months.

         2. Method of Payment.  The Company will pay interest on the  Securities
(except defaulted interest) to the persons who are the registered Holders of the
Securities  at the  close  of  business  on the  March 15 or  September  15 next
preceding the interest  payment  date.  Holders must  surrender  Securities to a
Paying Agent to collect  principal  and premium  payments.  The Company will pay
principal,  premium and interest in money of the United  States that at the time
of payment is legal tender for payment of public and private debts. The Company,
however,  may pay  principal,  premium and interest by its check payable in such
money. It may mail an interest check to a Holder's registered address.

         The payment of principal of and premium, if any, on this Security shall
be payable only upon  surrender of this  Security at the office or agency of the
Paying Agent in the City of Boston,  Commonwealth of Massachusetts.  Payments of
principal of,  premium,  if any, and interest on this Security  shall be made at
the office or agency of the Trustee maintained in the Borough of Manhattan, City
and State of New York or the City of Boston, Commonwealth of Massachusetts,  or,
in the  case of any such  payments  other  than the  payment  of  principal  and
premium, if any, at the Company's option, by check mailed to the Person entitled
thereto at such Person's address last appearing on the Company's register.

         3.       Registrar and Agents.  Initially, Fleet National Bank
will act as Registrar, Paying Agent, Conversion Agent and agent

                                       A-3

<PAGE>



for  service of notices  and  demands.  The  Company  may change any  Registrar,
co-registrar,  Paying Agent,  Conversion  Agent and agent for service of notices
and demands on sixty days' prior written  notice to the Trustee.  The Company or
any of its Subsidiaries may act as Paying Agent or Conversion  Agent. The office
of  Fleet  National  Bank  for  such  purpose  is One  Federal  Street,  Boston,
Massachusetts 02110, Attn: Corporate Trust Department.

         4. Indenture;  Limitations.  The Company issued the Securities under an
Indenture,  dated as of September 20, 1996 (the "Basic Indenture"),  between the
Company and Fleet  National Bank (the  "Trustee"),  as  supplemented  by a First
Supplemental  Indenture,  dated as of October 7, 1996, (as used herein, the term
"Indenture"  means  the Basic  Indenture  together  with the First  Supplemental
Indenture). Capitalized terms herein are used as defined in the Indenture unless
otherwise  defined herein.  The terms of the Securities  include those stated in
the  Indenture  and those made part of the  Indenture  by reference to the Trust
Indenture  Act of 1939 (15 U.S.  Code ss.ss.  77aaa-77bbbb)  as in effect on the
date of the Indenture.  The  Securities  are subject to all such terms,  and the
Holders of the  Securities  are  referred  to the  Indenture  and said Act for a
statement of them.

         The Securities are general unsecured obligations of the Company limited
to $40,000,000  principal amount.  The Indenture imposes certain  limitations on
the ability of the Company to, among other  things,  make payments in respect of
its Capital Stock,  merge or consolidate with any other Person and sell,  lease,
transfer or otherwise dispose of its properties or assets.

         5.  Optional  Redemption  by the  Company.  (a) The Company may, at its
option, redeem the Securities (i) at any time and from time to time, in whole or
in part,  on and after October 1, 1999, or (ii) in whole or from time to time in
part,  prior to October 1, 1999 as deemed  necessary by the Board of Trustees of
the Company  for the Company to continue to qualify as a real estate  investment
trust ("REIT")  under  Sections 856 through 860 of the Internal  Revenue Code of
1986, as amended.

                  (b) The  Securities  will  be  immediately  redeemable  by the
Company to the extent, but only to the extent,  deemed necessary by the Board to
prevent the Holder of such  Securities  or any other  person  having an interest
therein  (if the  Securities  were  thereupon  converted)  from being  deemed to
beneficially own,  directly or indirectly,  8.5% or more in value of the Capital
Stock  of the  Company.  For  purposes  of  determining  a  Person's  beneficial
ownership of Capital Stock,

                                       A-4

<PAGE>



the Securities  beneficially  owned by such Person will be deemed  converted and
added to the Capital  Stock  beneficially  owned by such Person for  purposes of
determining  whether such Person beneficially owns in excess of 8.5% in value of
the Capital  Stock.  For  purposes of this  paragraph,  Capital  Stock not owned
directly shall be deemed to be owned  indirectly by a Holder if that Holder or a
group including that Holder would be the beneficial owner of such Capital Stock,
as defined as of May 1, 1995,  in Rule 13d-3  promulgated  by the United  States
Securities and Exchange Commission under the Securities Exchange Act of 1934, as
amended,  and/or would be  considered to own such Capital Stock by reason of the
attribution rules of Section 544 or Section 856(h) of the Code.

                  (c) The redemption price pursuant to the foregoing clauses (a)
and (b) shall be equal to 100% of the principal amount thereof, plus accrued and
unpaid interest to the date fixed for redemption.

                  (d) The  Company  may at any time buy  Securities  on the open
market at prices  which may be  greater or less than the  redemption  prices set
forth herein.

         6. Notice of Redemption.  Notice of redemption  will be mailed at least
30 days but not more than 60 days before the  Redemption  Date to each Holder of
Securities to be redeemed at his registered address. Securities in denominations
larger than $1,000  principal  amount may be redeemed in part, but only in whole
multiples thereof. On and after the Redemption Date interest ceases to accrue on
Securities or portions of them called for redemption.

         7. Conversion.  A Holder of a Security may convert such  Security into
Common Shares of the Company after  issuance and at any time before the close of
business  on October 1, 2003.  If the  Security  is called for  redemption,  the
Holder may convert it at any time before the close of business on the date fixed
for such redemption.  The initial conversion price is $18.00 per share,  subject
to adjustment in certain events. To determine the number of shares issuable upon
conversion  of a Security,  divide the  principal  amount to be converted by the
conversion  price in effect on the  conversion  date. The Company will deliver a
check for any fractional share.

         To  convert  a  Security,  a  Holder  must  (1)  complete  and sign the
conversion notice on the back of the Security, (2) surrender the Security to the
Conversion Agent, (3) furnish appropriate endorsements and transfer documents if
required  by the  Registrar  or  Conversion  Agent and (4) pay any  transfer  or
similar tax if

                                       A-5

<PAGE>



required.  No payment or  adjustment  is to be made on  conversion  for interest
accrued hereon or for dividends on Common Shares issued on conversion; provided,
however,  that if a Security is surrendered for conversion after the record date
for a payment of interest  and on or before the  interest  payment  date,  then,
notwithstanding  such  conversion,  the  interest  falling due to such  interest
payment date will be paid to the Person in whose name the Security is registered
at the close of business on such record date and any  Security  surrendered  for
conversion  during the period from the close of  business on any regular  record
date to the opening of business on the corresponding  interest payment date must
be  accompanied  by payment of an amount equal to the  interest  payable on such
interest  payment date  (except in the case of  Securities  or portions  thereof
which are called for redemption on October 1, 1999 through and including October
4, 1999,  as to which such  payment in respect of the  October 1, 1999  interest
payment date need not be made).  A Holder may convert a portion of a Security if
the portion is $1,000 principal amount or an integral multiple thereof.

         If the Company is a party to a consolidation or merger or a transfer or
lease of all or substantially all of its assets, the right to convert a Security
into Common  Shares may be changed  into a right to convert it into  securities,
cash or other assets of the Company or another Person.

         8.   Subordination.   THIS  SECURITY  IS  SUBORDINATED  TO  ALL  SENIOR
INDEBTEDNESS  OF THE  COMPANY.  TO THE EXTENT AND IN THE MANNER  PROVIDED IN THE
INDENTURE,  SENIOR  INDEBTEDNESS  MUST BE PAID BEFORE ANY PAYMENT MAY BE MADE TO
ANY HOLDERS OF SECURITIES.  ANY SECURITYHOLDER BY ACCEPTING THIS SECURITY AGREES
TO SUCH SUBORDINATION AND AUTHORIZES THE TRUSTEE TO GIVE IT EFFECT.

         In addition to all other rights of Senior Indebtedness described in the
Indenture,  the Senior Indebtedness shall continue to be Senior Indebtedness and
entitled to the benefits of the  subordination  provisions  irrespective  of any
amendment,  modification or waiver of any term of any instrument relating to the
Senior Indebtedness or extension or renewal of the Senior Indebtedness.

         9. Denominations,  Transfer, Exchange. The Securities are in registered
form without coupons in  denominations  of $1,000  principal amount and integral
multiples thereof. A Holder may register the transfer of or exchange  Securities
in accordance  with the  Indenture.  The  Registrar may require a Holder,  among
other things, to furnish appropriate  endorsements and transfer documents and to
pay any  taxes and fees  required  by law or  permitted  by the  Indenture.  The
Registrar need not register the transfer of or exchange any Securities  selected
for redemption

                                       A-6

<PAGE>



or register the transfer of or exchange any  Securities  for a period of 15 days
before a selection of Securities to be redeemed.

         10. Persons Deemed Owners.  The registered  Holder of a Security may be
treated as its owner for all purposes.

         11.  Unclaimed Money. If money for the payment of principal or interest
on any Securities  remains  unclaimed for two years,  the Trustee and the Paying
Agent will pay the money back to the Company at its written request. After that,
Holders may look only to the Company for payment.

         12.  Discharge  Prior to Redemption or Maturity.  The Indenture will be
discharged and canceled except for certain  sections thereof upon payment of all
the  Securities,  or upon the  irrevocable  deposit with the Trustee of funds or
Government  Obligations  maturing on or before such payment  date or  Redemption
Date, sufficient to pay principal, premium, if any, and interest on such payment
or redemption.

         13. Amendment and Waiver. Subject to certain exceptions, without notice
to the Holders of the Securities, the Indenture or the Securities may be amended
with the consent of the Holders of at least a majority  in  principal  amount of
the Securities then  outstanding and any existing default or compliance with any
provision  may be waived  with the  consent  of the  Holders  of a  majority  in
principal amount of the Securities then  outstanding.  Without the consent of or
notice to any Securityholder,  the Company may amend or supplement the Indenture
or the Securities to, among other things, provide for uncertificated Securities,
to cure any  ambiguity,  defect or  inconsistency  or make any other change that
does not adversely affect the rights of any Securityholder.

         14.  Successors.  When a successor  assumes all the  obligations of its
predecessor  under the  Securities and the Indenture,  the  predecessor  will be
released from those obligations.

         15.  Defaults and Remedies.  If an Event of Default,  as defined in the
Indenture (other than a Event of Default relating to bankruptcy of the Company),
occurs and is continuing,  the Trustee or the Holders of a majority in principal
amount of  Securities  may  declare  all the  Securities  to be due and  payable
immediately in the manner and with the effect  provided in the Indenture.  If an
Event  of  Default  relating  to  bankruptcy  of the  Company  occurs,  then all
Securities  shall become  immediately due and payable without any declaration or
act on the part of the  Trustee or any  Holder.  Holders of  Securities  may not
enforce the Indenture or the Securities except as provided in the

                                       A-7

<PAGE>



Indenture.  The Trustee may require indemnity satisfactory to it, subject to the
provisions  of the TIA,  before it enforces  the  Indenture  or the  Securities.
Subject to certain limitations, Holders of a majority in principal amount of the
Securities then  outstanding may direct the Trustee in its exercise of any trust
or power.  The Trustee may  withhold  from Holders of  Securities  notice of any
continuing  default (except a default in payment of principal or interest) if it
determines  that  withholding  notice  is in their  interests.  The  Company  is
required  to file  periodic  reports  with the  Trustee as to the absence of any
Default or Event of Default.

         16. Trustee Dealings with the Company. Fleet National Bank, the Trustee
under the Indenture, in its individual or any other capacity, may make loans to,
accept  deposits from, and perform  services for the Company or its  Affiliates,
and may  otherwise  deal with the Company or its  Affiliates,  as if it were not
Trustee.

         17. No Personal  Liability.  THE AMENDED AND  RESTATED  DECLARATION  OF
TRUST OF 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.

         18. Authentication.  This Security shall not be valid until the Trustee
signs the certificate of authentication on the other side of this Security.

         19. Status as United States Real Property Holding  Corporation.  To the
best of its  knowledge,  as of the date of the  issuance of this  Security,  the
Company is not a "United States real property holding corporation" as defined in
Section 897(c)(2) of the United States Internal Revenue Code of 1986, as amended
(the "Code").  A non-United States person disposing of this Security may request
from the Company a statement as to whether this  Security  constitutes a "United
States real property  interest" (as defined in Code Section 897(c)(1)) as of the
date of  disposition.  It may be  necessary  to  obtain a  statement  that  this
Security does not constitute a "United States real property  interest"  prior to
the time that a tax return  would  otherwise  be  required  to be filed with the
United States Internal Revenue

                                       A-8

<PAGE>



Service with respect to such  disposition in order to avoid a withholding tax on
such  disposition.  If, at any time  while this  Security  is  outstanding,  the
Company  determines  that it is at such  time a  "United  States  real  property
holding  corporation",   it  shall  provide  notice  of  such  determination  in
accordance with the provisions of Section 13 hereof. The Holder of this Security
can contact the Company at 400 Centre  Street,  Newton,  Massachusetts  02158 to
obtain  information  as to the  United  States  income tax  consequences  of the
classification  of  the  Company  as a  "United  States  real  property  holding
corporation."

         20. CUSIP  Numbers.  Pursuant to a  recommendation  promulgated  by the
Committee on Uniform Security Identification  Procedures, the Company will cause
CUSIP numbers to be printed on the Securities as a convenience to the Holders of
the Securities.  No representation is made as to the accuracy of such numbers as
printed  on  the  Securities  and  reliance  may be  placed  only  on the  other
identification numbers printed hereon.

         21. Accounting Terms. All accounting terms not otherwise defined herein
shall have the meanings  assigned to them in accordance with generally  accepted
accounting principles as applied in the United States.

         22. Descriptive Headings. The descriptive headings appearing herein are
for  convenience  of  reference  only and shall not  alter,  limit or define the
provisions hereof.

         23. Abbreviations. Customary abbreviations may be used in the name of a
Securityholder  or an assignee,  such as: TEN COM (=tenants in common),  TEN ENT
(=tenants by the entireties), JT TEN (=joint tenants with rights of survivorship
and not as tenants in common), CUST (=Custodian), and U/G/M/A (=Uniform Gifts to
Minors Act).

         24. Limitations  on  certain  Holders.   This  Security  may  not  be
transferred (by sale, transfer,  gift, assignment,  devise or other disposition,
whether  voluntarily or involuntarily,  whether  beneficially or of record,  and
whether effected constructively, by operation of law or otherwise) to any Person
if, as a result of such  transfer,  the Holder hereof or any other Person having
an interest in this Security (other than an Excepted  Person,  as defined in the
Company's Amended and Restated Declaration of Trust, as amended), would, if this
Security were fully converted,  own or be deemed to own, directly or indirectly,
capital  stock of the  Company  representing  8.5% or more in value of the total
capital stock of the Company  outstanding  (determined  in  accordance  with the
provisions  of paragraph  (b) of Section 5 above).  ANY TRANSFER IN VIOLATION OF
THIS SECTION 24 NEED NOT BE RECOGNIZED BY THE COMPANY,  THE TRUSTEE OR ANY AGENT
(AS DEFINED IN THE INDENTURE), AND ANY PERSON WHO,

                                       A-9

<PAGE>



NOTWITHSTANDING THE FOREGOING, WOULD, IF THIS SECURITY WERE FULLY CONVERTED, OWN
OR BE  DEEMED TO OWN,  DIRECTLY  OR  INDIRECTLY,  CAPITAL  STOCK OF THE  COMPANY
REPRESENTING  8.5% OR MORE IN VALUE OF THE TOTAL  CAPITAL  STOCK OF THE  COMPANY
OUTSTANDING  (DETERMINED  IN ACCORDANCE  WITH THE PROVISIONS OF PARAGRAPH (B) OF
SECTION 5 ABOVE) SHALL, TO THE EXTENT OF SUCH EXCESS, NOT BE ENTITLED TO CONVERT
THIS SECURITY AS OTHERWISE PROVIDED HEREIN AND IN THE INDENTURE.

         The Company will furnish to any Securityholder upon written
request and without charge a copy for the Indenture.  It also
will furnish the text of this Security in larger type.  Requests
may be made to:  Health and Retirement Properties Trust, 400
Centre Street, Newton, Massachusetts 02158.  Attention:
President.

                                      A-10

<PAGE>



                                 TRANSFER NOTICE

If you the Holder wants to assign this Security, fill in the form below and have
your signature guaranteed:

For value received, I or we assign and transfer this Security to

                      (INSERT ASSIGNEE'S SOCIAL SECURITY OR
                           TAX IDENTIFICATION NUMBER)

                ________________________________________________
               |                                                |
               |________________________________________________|


 ................................................................

 ................................................................

 ................................................................

 ................................................................
      (Print or type assignee's name, address and zip code)

 ...........................................................agent
to transfer this Security on the books of the Company.  The
agent may substitute another to act for him.


Date:...........................................................

Your signature:.................................................
               (Sign exactly as your name appears on the other
                side of this Security)

Signature Guarantee*:...........................................

*Signature must be guaranteed by an eligible  guarantor  institution  within the
meaning of Securities and Exchange  Commission  Rule 17Ad-15  (including  banks,
stock brokers,  savings and loan associations,  national  securities  exchanges,
registered  securities  associations,  clearing agencies and credit unions) with
membership or participation in an approved signature guarantee medallion program
if  this  Security  is to be  delivered  other  than  to and in the  name of the
registered holder.



                                      A-11

<PAGE>



                                CONVERSION NOTICE

To convert this Security into common  shares of  beneficial  interest,  $.01 par
value per share, of the Company, check the box:
                                     _______
                                    |       |
                                    |_______|


To  convert  only  part of this  Security,  state  the  principal  amount  to be
converted (which must be a minimum of $1,000 or any multiple thereof):
                        _________________________________
                       | $                               |
                       |_________________________________|

If you want the Security certificate, if any, made out in another person's name,
fill in the form below:

                    (INSERT OTHER PERSON'S SOCIAL SECURITY OR
                           TAX IDENTIFICATION NUMBER)
                _________________________________________________
               |                                                 |
               |_________________________________________________|

 ................................................................

 ................................................................

 ................................................................

 ................................................................
       (Print or type assignee's name, address and zip code)

By submitting this  certificate,  you hereby certify to the Company that,  after
giving effect to the conversion  specified herein, you will not own or be deemed
to own,  directly or  indirectly,  shares of beneficial  interest in the Company
which,  together with shares of beneficial  interest issuable upon conversion of
any other  Securities  owned directly or indirectly by you,  represents  8.5% or
more in  value  of the  total  shares  of  beneficial  interest  of the  Company
outstanding  (determined  in accordance  with the provisions of paragraph (b) of
Section 5 of this Security).



                                      A-12

<PAGE>



Date:...........................................................

Your Signature:.................................................

(Sign exactly as your name appears on the other side of this
Security)

Signature Guaranteed By:  _______________________________________
                          Note: Signature must be guaranteed
                                by a member firm of the New York
                                Stock Exchange or a commercial
                                bank or trust company.

                                      A-13



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