EASTERN ENTERPRISES
8-K, 1998-07-28
NATURAL GAS DISTRIBUTION
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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): July 22, 1998


                               EASTERN ENTERPRISES
                               -------------------
             (Exact name of registrant as specified in its charter)
Massachusetts                     1-2297                       04-1270730
- -------------------------------------------------------------------------
(State or other            (Commission File Number)           (IRS Employer
jurisdiction of                                           Identification No.)
incorporation)



                  9 Riverside Road, Weston, Massachusetts              02493
- ----------------------------------------------------------------------------
                  (Address of principal executive offices)        (Zip Code)


        Registrant's telephone number, including area code (781) 647-2300
                                                           --------------


           None
          ------------------------------------------------------------
          (Former name or former address, if changed since last report)

<PAGE>




Item 1 through 4 and Items 6, 7(a) and (b), 8 and 9.  Not Applicable.
- ----------------------------------------------------


Item 5.  Other Events

         As of July 22, 1998, the Board of Trustees of Eastern  Enterprises (the
"Trust")  adopted an amendment to the Common Stock Rights  Agreement  (the "1990
Rights  Agreement"),  dated as of February 22,  1990,  as amended on January 30,
1995,  between  the  Trust and  BankBoston,  N.A.,  formerly  known as The First
National Bank of Boston,  successor in interest under the 1990 Rights  Agreement
to The Bank of New York. A copy of this  amendment is filed  herewith as Exhibit
99.1 and is hereby incorporated by reference.

         On July 22, 1998 the Board of Trustees of the Trust declared a dividend
of one Common Stock Purchase Right ("New Right") for each  outstanding  share of
Common Stock, with a par value of $1.00 per share, of the Trust. The dividend is
payable at the close of  business  upon the  earlier to occur of (i) the date of
redemption by the Trust of the Trust's outstanding rights issued pursuant to the
1990 Rights  Agreement and (ii) February 18, 2000, to  shareholders of record as
of the close of business on such date. The terms of the New Rights are set forth
in the  Rights  Agreement,  dated as of July 22,  1998,  between  the  Trust and
BankBoston,  N.A., as Rights Agent, a copy of which is filed herewith as Exhibit
99.2 and is hereby incorporated by reference herein.



Item 7.  Financial Statements and Exhibits

          (c)     Exhibits

           99.1--Amendment No. 2 to Common Stock Rights Agreement, dated as of
                 July 22, 1998, between Eastern Enterprises and BankBoston, N.A.

           99.2--Rights Agreement ("New Rights  Agreement"),  dated as of
                 July 22, 1998, between the Trust and BankBoston, N.A.

           99.3--Form  of  Common  Stock  Purchase   Rights   Certificate
                 (attached  as Exhibit A to the New Rights  Agreement).
                 Pursuant to the Rights Agreement, printed Common Stock
                 Purchase Rights  Certificates will not be mailed until
                 the  Distribution  Date (as  defined in the New Rights
                 Agreement).

           99.4--Summary of Common Stock Purchase Rights (attached as Exhibit
                 B to the New Rights Agreement).
<PAGE>




                                    SIGNATURE




         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 hereunto duly authorized.




                                                         EASTERN ENTERPRISES


Date: July 28, 1998                        By:  /s/ L. William Law, Jr.
     --------------                            ------------------------
                                                L. William Law, Jr.
                                                Senior Vice President, General
                                                    Counsel and Secretary

<PAGE>

                                 EXHIBIT INDEX


                                    Exhibits
                                    --------


99.1--Amendment No. 2 to Common Stock Rights Agreement, dated as of
      July 22, 1998, between Eastern Enterprises and BankBoston, N.A.

99.2--Rights Agreement ("New Rights  Agreement"),  dated as of
      July 22, 1998, between the Trust and BankBoston, N.A.

99.3--Form  of  Common  Stock  Purchase   Rights   Certificate
      (attached  as Exhibit A to the New Rights  Agreement).
      Pursuant to the Rights Agreement, printed Common Stock
      Purchase Rights  Certificates will not be mailed until
      the  Distribution  Date (as  defined in the New Rights
      Agreement).

99.4--Summary of Common Stock Purchase Rights (attached as Exhibit
      B to the New Rights Agreement).


<PAGE>
                                                             EXHIBIT 99.1

                              EASTERN ENTERPRISES


                              Amendment No. 2 to
                              ------------------
                         Common Stock Rights Agreement
                         -----------------------------


         This  Amendment,  dated as of July 22,  1998,  amends the Common  Stock
Rights  Agreement  dated as of February 22, 1990, as amended on January 30, 1995
(as  amended,   the  "Rights  Agreement"),   between  Eastern   Enterprises,   a
Massachusetts  business trust (the "Trust"),  and BankBoston,  N.A. (the "Rights
Agent"),  formerly  known as The First  National  Bank of Boston,  successor  in
interest  under the Rights  Agreement to The Bank of New York.  Terms defined in
the Rights  Agreement  and not  otherwise  defined  herein are used herein as so
defined.

                               W I T N E S S E T H:
                               -------------------

         WHEREAS,  on  February  22,  1990 the  Board of  Trustees  of the Trust
authorized  the issuance of Rights to purchase,  on the terms and subject to the
provisions of the Rights Agreement, shares of the Trust's Common Stock; and

         WHEREAS,  on  February  22,  1990,  the Board of  Trustees of the Trust
authorized and declared a dividend  distribution of one Right for every share of
Common Stock of the Trust outstanding on the Dividend Record Date and authorized
the  issuance of one Right  (subject to certain  adjustments)  for each share of
Common  Stock of the Trust  issued  between  the  Dividend  Record  Date and the
Distribution Date; and

         WHEREAS, the Distribution Date has not occurred; and

         WHEREAS,  pursuant to Section 26 of the Rights Agreement,  the Board of
Trustees has  unanimously  approved an amendment  of certain  provisions  of the
Rights Agreement as set forth below;

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
agreements herein set forth, the parties hereby agree as follows:

1.       Amendments to the Rights Agreement.
         ----------------------------------

         1.1.     Section 1 of the Rights Agreement shall be amended as follows:

                  (a)      Section 1(a) of the Rights Agreement shall be amended
                           by deleting the  reference to "20%" and  replacing it
                           with reference to "10%".

<PAGE>

                  (b)      Section 1(c) of the Rights Agreement shall be amended
                           by deleting  paragraph  1(c) and  replacing it in its
                           entirety with the following paragraph:

                           "        (c)     [Reserved]."

                  (c)      Section 1(d) of the Rights Agreement shall be amended
                           by deleting  paragraph  1(d) and  replacing it in its
                           entirety with the following paragraph:

                           "        (d)     [Reserved]."

                  (d)      Section 1(q) of the Rights Agreement shall be amended
                           by deleting the five references
                           to "Adverse Person" therefrom.

                  (e)      Section 1(r) of the Rights Agreement shall be amended
                           by deleting  paragraph  1(r) and  replacing it in its
                           entirety with the following paragraph:

                           " (r)  "Distribution  Date" shall mean the date which
                           is the  later  of (A) the  earlier  of (x)  the  10th
                           Business Day following the Stock  Acquisition Date or
                           (y)  the  10th   Business  Day  following  the  Offer
                           Commencement   Date   or  (B)   such   specified   or
                           unspecified  date thereafter which is on or after the
                           Dividend  Record  Date,  as  may be  determined  by a
                           majority of the Trustees then in office."

                  (f)      A  new  Subsection  shall  be  added  to  the  Rights
                           Agreement  after Section 1(u) and before Section 1(v)
                           as follows:

                           "        (u')    "Exchange Ratio" shall have the
                           meaning set forth in Section 23A(a) hereof."

                  (g)      Section 1(w) of the Rights Agreement shall be amended
                           by deleting the  reference to "20%" and  replacing it
                           with reference to "10%".

         1.2.     Section  3(c) of the  Rights  Agreement  shall be  amended  by
                  adding the phrase ", as amended on January  30, 1995 and as of
                  July 22,  1998" after the phrase  "February  22,  1990" in the
                  first sentence of the legend described therein and by deleting
                  the two references to "Adverse  Person" from the last sentence
                  of the legend described therein.

         1.3.     Section 4(b) of the Rights Agreement shall be amended by 
                  deleting the four references to "Adverse Person" therefrom.
         1.4.     Section 7(e) of the Rights Agreement shall be amended by
                  deleting the four references to "Adverse Person" therefrom.
<PAGE>

         1.5.     Section 9(a) of the Rights Agreement shall be amended by
                  adding to the end of paragraph (a) the
                  following language:
                  ";  provided,  further,  however,  that in no event shall such
                  failure to so reserve  shares  affect the rights of any holder
                  of Rights hereunder."

         1.6.     Section 11 of the Rights Agreement shall be amended as
                  follows:

                  (a)      Clauses (A) and (B) of  Section 11(a)(ii) shall be
                           deleted and replaced in their
                           entirety as follows:

                           "(A)any Person shall at any time after the
                           Declaration Date become an
                           Acquiring Person; or

                           (B) any  Acquiring  Person  or any  Affiliate  of any
                           Acquiring  Person,  at any time after the Declaration
                           Date,  directly or  indirectly,  shall (1) merge into
                           the Trust or otherwise  combine  with the Trust,  and
                           the Trust shall be the continuing or surviving Person
                           of such merger or combination and the Common Stock of
                           the  Trust  shall  remain  outstanding  and no shares
                           thereof  shall be  changed or  otherwise  transformed
                           into stock or other securities of any other Person or
                           the Trust or cash or any other  property,  (2) in one
                           or more  transactions,  transfer  any  assets  to the
                           Trust in exchange (in whole or in part) for shares of
                           any class of its equity  securities or for securities
                           exercisable  for or  convertible  into  shares of any
                           such class or otherwise  obtain from the Trust,  with
                           or without  consideration,  any additional  shares of
                           any  such  class  or  securities  exercisable  for or
                           convertible into shares of any such class (other than
                           as part of a pro rata  distribution to all holders of
                           such class),  (3) sell,  purchase,  lease,  exchange,
                           mortgage,  pledge,  transfer or otherwise dispose (in
                           one transaction or a series of transactions) to, from
                           or with the Trust or any of the Trust's Subsidiaries,
                           assets with an aggregate  fair market value in excess
                           of  25%  of  the   assets   of  the   Trust  and  its
                           Subsidiaries  determined on a  consolidated  basis on
                           terms and conditions less favorable to the Trust than
                           the   Trust   would   be  able  to   obtain   through
                           arm's-length  negotiation with an unaffiliated  third
                           party, (4) receive any compensation from the Trust or
                           any   of  the   Trust's   Subsidiaries   other   than
                           compensation  as a  director  of  the  Trust  or  for
                           full-time  employment as a regular  employee at rates
                           in accordance with the Trust's (or such Subsidiary's)
                           past  practices,  (5)  receive  the  benefit  (except
                           proportionately  as a  stockholder),  of  any  loans,
                           advances,  guarantees,  pledges  or  other  financial
                           assistance  provided  by  the  Trust  or  any  of its
                           Subsidiaries  on terms and conditions  less favorable
                           to the  Trust  (or such  Subsidiary)  than the  Trust
                           would  be  able  to   obtain   through   arm's-length
                           negotiation  with an unaffiliated  third party or


<PAGE>

                          (6) commence a tender or exchange offer for
                           securities of the Trust; or

                           (C) during such time as there is an Acquiring  Person
                           at any time after the Declaration  Date,  there shall
                           be any reclassification of securities  (including any
                           combination  thereof),  or  recapitalization  of  the
                           Trust,  or any merger or  consolidation  of the Trust
                           with any of its Subsidiaries  (whether or not with or
                           into or otherwise  involving  an Acquiring  Person or
                           any  Affiliate  of  an  Acquiring  Person),   or  any
                           repurchase by the Trust or any of its Subsidiaries of
                           shares of the Common Stock of the Trust, or any other
                           class or series of  securities  issued by the  Trust,
                           which  reclassification,   recapitalization,  merger,
                           consolidation  or  repurchase  is  effected at a time
                           when a majority of the Board  consists of persons who
                           are  the  Acquiring  Person  or  its  Affiliates,  or
                           nominees or designees  of any thereof,  which has the
                           effect, directly or indirectly, of increasing by more
                           than 1% the  proportionate  share of the  outstanding
                           shares  of  any  class  of   equity   securities   or
                           securities  exercisable  for or convertible  into any
                           class of equity securities of the Trust or any of its
                           Subsidiaries which is directly or indirectly owned by
                           an Acquiring  Person or any Affiliate of an Acquiring
                           Person;"

                  (b)      Section   11(a)(ii)   shall  be  further  amended  by
                           deleting  the  phrase  "clause  (A) or (B)"  from the
                           first  sentence  after  the  new  subsection  (C) and
                           replacing  it with the  phrase  "clause  (A),  (B) or
                           (C)".

                  (c)      Section  11(a)(iii)  shall be amended by deleting the
                           parenthetical  "(other than any Acquiring Person, any
                           Adverse  Person and any  Affiliates  of the Acquiring
                           Person or Adverse  Person)"  from clause (ii) thereof
                           and  replacing it with the  following  parenthetical:
                           "(other  than any  Acquiring  Person or  Disqualified
                           Transferee or any  Affiliate of the Acquiring  Person
                           or Disqualified Transferee)".

                  (d)      Section 11(f) shall be amended by deleting the phrase
                           "and (m)" and  replacing  therewith the phrase ", (m)
                           and  (p)"  and  deleting  the  phrase  "and  13"  and
                           replacing therewith the phrase ", 13 and 14".

                  (e)      Section 11(p) shall be amended by deleting subsection
                          (p) and replacing it in its
                           entirety with the following:

<PAGE>
                           " (p)  Anything  in this  Agreement  to the  contrary
                           notwithstanding, in the event that the Trust shall at
                           any time  after  the  Dividend  Declaration  Date and
                           prior to the  Distribution  Date (i) declare or pay a
                           dividend on the  outstanding  shares of Common  Stock
                           payable in shares of Common  Stock,  or (ii) effect a
                           subdivision,  combination  or  consolidation  of  the
                           outstanding  Common  Stock  (by  reclassification  or
                           otherwise  than by payment of  dividends in shares of
                           Common  Stock)  into a greater or  smaller  number of
                           shares,  then in any such  case,  (i) the  number  of
                           shares of Common Stock  purchasable  after such event
                           upon   proper   exercise   of  each  Right  shall  be
                           determined  by  multiplying  the  number of shares of
                           Common Stock so purchasable immediately prior to such
                           event by a fraction  the  numerator of which shall be
                           the  total   number   of   shares  of  Common   Stock
                           outstanding  immediately  prior to the  occurrence of
                           the event and the  denominator  of which shall be the
                           total  number of shares of Common  Stock  outstanding
                           immediately  following the  occurrence of such event;
                           and (ii)  each  share  of  Common  Stock  outstanding
                           immediately  after such event  shall have issued with
                           respect to it that number of Rights  which each share
                           of Common Stock outstanding immediately prior to such
                           event had issued with respect to it. The  adjustments
                           provided  for in this  Section  11(p)  shall  be made
                           successively  whenever such a dividend is declared or
                           paid   or   such  a   subdivision,   combination   or
                           consolidation is effected."

         1.7.     Section 13 of the Rights Agreement shall be amended as 
                  follows:

                  (a)      The first  sentence of Section 13 shall be amended by
                           deleting  the  phrase  "or  occurrence  of an Adverse
                           Person Event" therefrom.

                  (b)      Clause (c) of the first  sentence of Section 13 shall
                           be amended by  deleting  the  reference  to "50%" and
                           replacing it with reference to "25%".

         1.8.     Section 20(m) of the Rights Agreement shall be amended by
                  deleting the phrase "or Adverse
                  Person" from the first sentence thereof.

         1.9.     Section  23 of  the  Rights  Agreement  shall  be  amended  by
                  deleting the proviso "; provided,  however, that the Board may
                  not redeem any Rights  following the  occurrence of an Adverse
                  Person Event" from the first sentence thereof.

         1.10.    A new Section 23A shall be added to the Rights Agreement after
                  Section 23 as follows:

                  "Section 23A.  Exchange.
                           (a) The Board,  by majority vote, may, at its option,
                  at any time after any  Person  becomes  an  Acquiring  Person,
                  exchange all or part of the then  outstanding  and exercisable
                  Rights for shares of Common Stock at an exchange  ratio of one
                  share of Common  Stock per Right,  appropriately  adjusted  to
                  reflect any stock split, stock dividend or similar transaction
                  occurring  after the date hereof (such exchange  ratio, as the
                  same may be so adjusted from time to time,  being  hereinafter
                  referred  to as the  "Exchange  Ratio").  Notwithstanding  the
                  foregoing,  the Board  shall not be  empowered  to effect such
                  exchange  at any time  after any  Person  (other  than (i) the
                  Trust,  (ii) any  Subsidiary of the Trust,  (iii) any employee

<PAGE>

                  benefit plan of the Trust or of any  Subsidiary  of the Trust,
                  or  (iv)  any  Person  or  entity   organized,   appointed  or
                  established  by the Trust for or  pursuant to the terms of any
                  such  plan),  together  with all  Affiliates  of such  Person,
                  becomes  the  Beneficial  Owner  of 50% or more of the  Common
                  Stock then outstanding.

                           (b) Immediately upon the action of the Board ordering
                  the exchange of any Rights  pursuant to subsection (a) of this
                  Section 23A and  without  any  further  action and without any
                  notice,  the right to exercise such Rights shall terminate and
                  the only right  thereafter of a holder of such Rights shall be
                  to receive  that number of shares of Common Stock equal to the
                  number of such Rights held by such  holder  multiplied  by the
                  Exchange Ratio. The Trust shall promptly give public notice of
                  any such  exchange;  provided,  however,  that the  failure to
                  give,  or any  defect  in,  such  notice  shall not affect the
                  validity of such  exchange.  The Trust  promptly  shall mail a
                  notice  of any such  exchange  to all of the  holders  of such
                  Rights  at  their  last  addresses  as they  appear  upon  the
                  registry books of the Rights Agent. Any notice which is mailed
                  in the manner herein  provided shall be deemed given,  whether
                  or not the holder  receives  the  notice.  Each such notice of
                  exchange  shall state the method by which the  exchange of the
                  Common Stock for Rights shall be effected and, in the event of
                  any  partial  exchange,  the  number of Rights  which  will be
                  exchanged.  Any partial  exchange  shall be effected  pro rata
                  based on the number of Rights  (other than  Rights  which have
                  become void pursuant to the provisions of Section 7(e) hereof)
                  held by each holder of Rights.

                           (c) In the event that there  shall not be  sufficient
                  shares  of  Common  Stock  issued  but  not   outstanding   or
                  authorized  but  unissued to permit any  exchange of Rights as
                  contemplated  in  accordance  with this Section 23A, the Trust
                  shall take all such action as may be  necessary  to  authorize
                  additional  Common  Stock for  issuance  upon  exchange of the
                  Rights.

                           (d)  The  Trust   shall  not  be  required  to  issue
                  fractions  of  shares  of  Common   Stock  or  to   distribute
                  certificates which evidence fractional shares of Common Stock.
                  In lieu of such fractional  shares of Common Stock,  the Trust
                  shall pay to each  registered  holder  of a Right  Certificate
                  with regard to which a fractional  share of Common Stock would
                  otherwise  be  issuable  an amount  in cash  equal to the same
                  fraction  of the  current  market  value  of a whole  share of
                  Common  Stock.  For the  purposes of this  paragraph  (d), the
                  current market value of a whole share of Common Stock shall be
                  the Closing  Price of a share of Common  Stock (as  determined
                  pursuant  to  Section   11(d)  hereof)  for  the  Trading  Day
                  immediately  prior to the date of  exchange  pursuant  to this
                  Section 23A. "

<PAGE>

         1.11.    Section 24 of the Rights Agreement shall be amended as
                  follows:

                  (a)      Clause (d) of the first  sentence of Section 24 shall
                           be amended by  deleting  the  reference  to "50%" and
                           replacing it with reference to "25%".

                  (b)      The following new paragraph shall be added to the end
                           of Section 24:

                           "  Notwithstanding  anything in this Agreement to the
                           contrary,  prior to the Distribution Date a filing by
                           the Trust with the Securities and Exchange Commission
                           shall constitute  sufficient notice to the holders of
                           securities of the Trust,  including  the Rights,  for
                           purposes of this  Agreement  and no other notice need
                           be given."

         1.12.    Section 25 of the Rights Agreement shall be amended by
                  deleting the reference to
                           "THE FIRST NATIONAL BANK OF BOSTON
                           Attention: Shareholder Services Division
                           150 Royall Street
                           Canton, MA 02021"

                  therefrom and replacing it with reference to

                           "BankBoston, N.A.
                           c/o Boston EquiServe, L.P.
                           150 Royall Street
                           Canton, MA 02021
                           Attn: Client Administration".

         1.13.    Section 26 of the Rights Agreement shall be amended as 
                  follows:

                  (a)      The first sentence of Section 26 shall be deleted and
                           replaced in its entirety with the following sentence:

                           "Prior to the  Distribution  Date and  subject to the
                           last  sentence of this Section 26, the Trust may from
                           time to time  supplement  or amend any  provision  of
                           this Agreement without the approval of any holders of
                           the Rights."

                  (b)      The second sentence of Section 26 shall be amended by
                           deleting the phrase "earlier of the Distribution Date
                           or an Adverse Person Event" and replacing it with the
                           phrase "Distribution Date".

                  (c)      The  second  sentence  of Section 26 shall be further
                           amended by deleting  the  parenthetical  "(other than
                           any Acquiring Person, Adverse Person or Affiliates of
                           any Acquiring  Person or Adverse Person)" from clause
                           (iv) thereof and replacing it with the  parenthetical
                           "(other  than  an  Acquiring   Person,   Disqualified
                           Transferee or any  Affiliate of any Acquiring  Person
                           or Disqualified Transferee)".
<PAGE>

         1.14.    Section  28 of  the  Rights  Agreement  shall  be  amended  by
                  deleting  the  phrase ", that a Person is an  Adverse  Person"
                  from the parenthetical in clause (ii) therein.

         1.15.    Section 30 of the Rights Agreement shall be amended by adding
                  to the end of the paragraph the
                  following language:

                  "If any  term,  provision,  covenant  or  restriction  of this
                  Agreement  is held by a court  of  competent  jurisdiction  or
                  other  authority  to be invalid,  void or  unenforceable,  the
                  remainder of the terms, provisions, covenants and restrictions
                  of this  Agreement  shall  remain in full force and effect and
                  shall  in  no  way  be  affected,   impaired  or  invalidated;
                  provided,  however,  that  notwithstanding  anything  in  this
                  Agreement  to the  contrary,  if  any  such  term,  provision,
                  covenant or  restriction is held by such court or authority to
                  be invalid,  void or unenforceable and the Board determines in
                  its good faith  judgment  that  severing the invalid  language
                  from this  Agreement  would  adversely  affect the  purpose or
                  effect of this Agreement, the right of redemption set forth in
                  Section  23 hereof  shall be  reinstated  and shall not expire
                  until the Close of  Business  on the tenth day  following  the
                  date of such determination by the Board."

         1.16.    Exhibit A of the Rights Agreement shall be amended as follows:

                  (a)      The third  sentence of the legend shall be amended by
                           deleting the phrase  "ADVERSE  PERSON"  therefrom and
                           replacing  it  with  the  phrase   "AFFILIATE  OF  AN
                           ACQUIRING  PERSON  (WHICH  INCLUDES   AFFILIATES  AND
                           ASSOCIATES)".

                  (b)      The fifth  sentence of the legend shall be amended by
                           deleting the phrases ", AN ADVERSE PERSON" and "OR AN
                           ADVERSE PERSON" therefrom.

                  (c)      The  first  sentence  of the first  paragraph  of the
                           Rights  Certificate  shall be  amended  by adding the
                           phrase ", as amended on  January  30,  1995 and as of
                           July 22, 1998" after the phrase "February 22, 1990".

                  (d)      The  first  sentence  of the first  paragraph  of the
                           Rights   Certificate  shall  be  further  amended  by
                           deleting the phrase "The Bank of New York, a New York
                           banking  corporation (the "Rights Agent")"  therefrom
                           and  replacing it with the phrase  "BankBoston,  N.A.
                           (the  "Rights  Agent"),  formerly  known as The First
                           National Bank of Boston,  successor in interest under
                           the Rights Agreement to The Bank of New York".

                  (e)      Clause  (i) of the  second  paragraph  of the  Rights
                           Certificate  shall be amended by deleting the phrases
                           ", an  Adverse  Person"  and "or an  Adverse  Person"
                           therefrom.
<PAGE>

                  (f)      The first  sentence  of the eighth  paragraph  of the
                           Rights  Certificate  shall be amended by deleting the
                           parenthetical  "(unless  the Board of Trustees  shall
                           determine   a  Person  to  be  an  Adverse   Person)"
                           therefrom.

                  (g)      Paragraphs   (1)   and   (2)   of   the   Certificate
                           accompanying the Rights  Certificate shall be amended
                           by deleting from each such paragraph the phrase ", an
                           Adverse Person".

                  (h)      Paragraphs   (1)   and   (2)   of   the   Certificate
                           accompanying  the Form of Election to Purchase  shall
                           be amended by deleting  from each such  paragraph the
                           phrases  ",  an  Adverse   Person"  and  "or  Adverse
                           Person".

2.       Governing Law.

                  This Amendment to the Rights Agreement shall be deemed to be a
         contract made under the laws of The Commonwealth of  Massachusetts  and
         for all purposes shall be governed by and construed in accordance  with
         the laws of said  Commonwealth  applicable  to contracts to be made and
         performed entirely within said Commonwealth.

3.       Counterparts.

                  This Amendment to the Rights  Agreement may be executed in any
         number  of  counterparts  and each of such  counterparts  shall for all
         purposes be deemed to be an original,  and all such counterparts  shall
         together constitute but one and the same instrument.



4.       Amendment; Ratification of Rights Agreement.

                  Except as expressly noted herein, this Amendment to the Rights
         Agreement shall not by implication or otherwise alter, modify, amend or
         in any way affect any of the terms, conditions,  obligations, covenants
         or  agreements  contained  in the  Rights  Agreement,  all of which are
         ratified and affirmed in all respects and shall  continue in full force
         and effect.

5.       Severability.

                  If any  term,  provision,  covenant  or  restriction  of  this
         Amendment  to the  Rights  Agreement  is held by a court  of  competent
         jurisdiction or other authority to be invalid,  void or  unenforceable,
         the remainder of the terms,  provisions,  covenants and restrictions of
         this Amendment to the Rights  Agreement,  and of the Rights  Agreement,
         shall  remain in full force and effect and shall in no way be affected,
         impaired or invalidated.
<PAGE>

6.       The Trust.

                  Reference  is  hereby  made  to  the   declaration   of  trust
         establishing the Trust dated July 18, 1929, as amended, a copy of which
         is on file in the office of the Secretary of State of The  Commonwealth
         of Massachusetts. The name "Eastern Enterprises" refers to the trustees
         under such  declaration  as trustees  and not  personally.  No trustee,
         shareholder,  officer  or  agent  of the  Trust  shall  be  held to any
         personal liability in connection with the affairs of the Trust and only
         the trust estate may be liable.


                                  [This space has intentionally been left blank]


<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 2
to the Rights  Agreement to be duly  executed as of the day and year first above
written.

                                          EASTERN ENTERPRISES




                                      By: /s/ Jean A. Scholtens
                                          ------------------------------
                                          Title: Vice President and Treasurer


Attest:


By:  /s/ L. William Law, Jr.
   -------------------------
   Secretary

                                          BANKBOSTON, N.A., FORMERLY KNOWN AS
                                          THE FIRST NATIONAL BANK OF BOSTON, as
                                          Rights Agent



                                          By: /s/ Margaret Prentice
                                             ----------------------
                                             Title: Administrative Manager

Attest:

By:  /s/ Joshua McGinn
   -----------------------------
   Title: Senior Account Manager

<PAGE>

                                                            EXHIBIT 99.2





                              EASTERN ENTERPRISES

                                      and

                                BANKBOSTON, N.A.


                                as Rights Agent



                                Rights Agreement

                           Dated as of July 22, 1998



<PAGE>

                               Table of Contents



Section                                                                  Page

Section 1.  Certain Definitions............................................ 1

Section 2.  Appointment of Rights Agent.................................... 6

Section 3.  Issuance of Rights Certificates................................ 6

Section 4.  Form of Rights Certificates............. ...................... 8

Section 5.  Countersignature and Registration.............................. 9

Section 6.  Transfer, Split Up, Combination and Exchange of Rights
                Certificates; Mutilated, Destroyed, Lost or Stolen Rights
                Certificates............................................... 9

Section 7.  Exercise of Rights; Purchase Price; Expiration Date of Rights. 10
           
Section 8.  Cancellation and Destruction of Rights Certificates............12

Section 9.  Reservation and Availability of Shares of Common Stock; Other
                Covenants..............................                    12
           
Section 10.  Common Stock Record Date; Etc.................................14

Section 11.  Antidilution Adjustments......................................14

Section 12.  Certificate of Adjustments....................................23

Section 13.  Consolidation, Merger or Sale or Transfer of Assets or 
                Earning Power................................              24
            
Section 14.  Fractional Rights and Fractional Shares.......................26

Section 15.  Rights of Action..............................................26

Section 16.  Agreement of Rights Holders...................................27

Section 17.  Rights Certificate Holder Not Deemed a Shareholder............27

Section 18.  Concerning the Rights Agent...................................28

Section 19.  Merger or Consolidation or Change of Name of Rights Agent.....28

<PAGE>
            
Section 20.  Duties of Rights Agent........................................29

Section 21.  Change of Rights Agent........................................31

Section 22.  Issuance of New Rights Certificates..... .....................32

Section 23.  Redemption and Termination....................................33

Section 24.  Exchange......................................................33

Section 25.  Notice of Proposed Actions....................................34

Section 26.  Notices.......................................................35

Section 27.  Supplements and Amendments....................................36

Section 28.  Successors............................... ....................36

 Section 29.  Determinations and Actions by the Board; etc.................37

Section 30.  Benefits of this Agreement....................................37

Section 31.  Severability.................................. ...............37

Section 32.  Governing Law.................................................37

Section 33.  Counterparts..................................................38

Section 34.  Descriptive Headings..........................................38

Section 35.  The Trust.....................................................38

<PAGE>

                                RIGHTS AGREEMENT


         This Agreement (the  "Agreement")  dated as of July 22, 1998 is between
Eastern  Enterprises,   a  Massachusetts   business  trust  (the  "Trust"),  and
BankBoston, N.A., as Rights Agent (the "Rights Agent").

                              W I T N E S S E T H:

         WHEREAS,  on July 22,  1998 the Board of  Trustees  of the  Trust  (the
"Board")  authorized  the issuance of rights  (collectively,  the  "Rights," and
individually a "Right"),  each Right being a right to purchase, on the terms and
subject to the  provisions of this  Agreement,  one share of the Trust's  Common
Stock; and

         WHEREAS,  on July 22,  1998  (the  "Declaration  Date")  the  Board (a)
authorized and declared a dividend  distribution of one Right for every share of
Common Stock of the Trust  outstanding at the Close of Business upon the earlier
to occur of (i) the date of redemption  by the Trust of the Trust's  outstanding
Rights pursuant to Section 23 of the Common Stock Rights Agreement,  dated as of
February 22, 1990, as amended (the "1990 Rights  Agreement"),  and (ii) February
18, 2000 (the earlier being, the "Dividend Record Date"), and (b) authorized the
issuance  of, and agreed to issue,  one Right (as such number may be adjusted in
accordance  with Section  11(i) or 11(p) hereof) for every share of Common Stock
of the Trust issued between the Dividend Record Date and the  Distribution  Date
(as hereinafter defined).

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
agreements herein set forth, the parties hereto hereby agree as follows:

Section 1.  Certain Definitions.

         For purposes of this  Agreement,  the following terms have the meanings
indicated:

         (a)      "1990 Rights Agreement" shall have the meaning set forth in
                   the recitals to this Agreement.

         (b) "Acquiring Person" shall mean (a) any Person who or which, together
with all Affiliates of such Person, shall be the Beneficial Owner of 10% or more
of the shares of Common Stock  outstanding  at any time on or after the Dividend
Record Date , or (b) any Person who or which,  together  with all  Affiliates of
such Person,  is, as of the Dividend  Record Date, an Acquiring  Person (as such
term is defined in the 1990 Rights Agreement, irrespective of the termination of
said 1990 Rights  Agreement);  provided,  that neither  clause (a) nor (b) shall
include:  (i) the Trust,  (ii) any  Subsidiary of the Trust,  (iii) any employee
benefit  plan of the Trust or of any  Subsidiary  of the Trust,  (iv) any Person
organized,  appointed,  or established by the Trust or a Subsidiary of the Trust
pursuant  to the terms of any plan  described  in clause  (iii) above or (v) any

<PAGE>

such Person who has reported or is required to report such ownership on Schedule
13G under  the  Exchange  Act (or any  comparable  or  successor  report)  or on
Schedule  13D under the  Exchange Act (or any  comparable  or successor  report)
which  Schedule  13D does not state any  intention  to or  reserve  the right to
control or influence the management or policies of the Trust or engage in any of
the actions  specified in Item 4 of such Schedule (other than the disposition of
the Common Stock) and,  within 10 Business Days of being  requested by the Trust
to advise  it  regarding  the same,  certifies  to the  Trust  that such  Person
acquired  shares of Common  Stock in excess  of 9.9%  inadvertently  or  without
knowledge of the terms of the Rights and who, together with all of such Person's
Affiliates,  thereafter does not acquire additional shares of Common Stock while
the  Beneficial  Owner  of 10% or  more  of the  shares  of  Common  Stock  then
outstanding, provided, however, that if the Person requested to so certify fails
to do so within 10 Business  Days,  then such Person  shall  become an Acquiring
Person immediately after such 10 Business Day Period.

         (c) "Act" shall mean the Securities Act of 1933 (or any successor act),
as amended and as may from time to time be in effect.

         (d)  "Affiliate,"  with  respect  to any  Person,  shall mean any other
Person who is, or who would be deemed to be, an "affiliate" or an "associate" of
such Person within the respective  meanings ascribed to such terms in Rule 12b-2
of the General Rules and Regulations  under the Exchange Act, as such Rule is in
effect on the Declaration Date.

         (e) A Person  shall be deemed the  "Beneficial  Owner" of, and shall be
deemed to "beneficially own" or have "Beneficial Ownership" of, any securities:

                  (i) which such Person or any of such Person's  Affiliates  has
         "beneficial  ownership"  of within  the  meaning  of Rule  13d-3 of the
         General Rules and  Regulations  under the Exchange Act, as such Rule is
         in effect on the Declaration Date;

                  (ii) which such Person or any of such Person's Affiliates has,
         directly or  indirectly,  the right to acquire  (whether  such right is
         exercisable  immediately  or after the passage of time) pursuant to any
         agreement,  arrangement or understanding (whether or not in writing) or
         upon the exercise of conversion,  exchange or other rights, warrants or
         options, or otherwise;

                  (iii)  which such  Person or any of such  Person's  Affiliates
         has, directly or indirectly, the right to vote or dispose of, including
         pursuant to any agreement, arrangement or understanding (whether or not
         in writing);  provided,  however, that a Person shall not be deemed the
         "Beneficial  Owner"  of, or to  "beneficially  own," any  security  for
         purposes  of  this  Section  1(e)(iii)  as a  result  of an  agreement,
         arrangement or  understanding  to vote such security if such agreement,
         arrangement or understanding:  (A) arises solely from a revocable proxy
         given in  response  to a  public  proxy or  consent  solicitation  made

<PAGE>

         pursuant to, and in accordance with, the applicable proxy  solicitation
         rules and regulations promulgated under the Exchange Act or (B) is made
         in  connection  with,  or is to  otherwise  participate  in, a proxy or
         consent  solicitation  made,  or  to  be  made,  pursuant  to,  and  in
         accordance   with,  the  applicable   proxy   solicitation   rules  and
         regulations   promulgated  under  the  Exchange  Act,  in  either  case
         described  in clause (A) or (B) above,  whether or not such  agreement,
         arrangement or  understanding is also then reportable by such Person on
         Schedule  13D under the Exchange  Act (or any  comparable  or successor
         report); or

                  (iv) which are beneficially owned, directly or indirectly,  by
         any other Person or any Affiliate thereof with which such Person or any
         of  such  Person's   Affiliates  has  any  agreement,   arrangement  or
         understanding   (whether  or  not  in  writing),  for  the  purpose  of
         acquiring,  holding, voting (except pursuant to a revocable proxy or in
         connection with a proxy or consent solicitation described in clause (A)
         or (B) of the proviso to Section  1(e)(iii) hereof) or disposing of any
         securities of the Trust;

provided,  however, that for purposes of this Section 1(e) a Person shall not be
deemed the  "Beneficial  Owner"  of, or to  "beneficially  own," (A)  securities
tendered  pursuant to a tender or  exchange  offer made by such Person or any of
such  Person's  Affiliates  until such  tendered  securities  are  accepted  for
purchase or exchange,  (B)  securities  issuable  upon exercise of Rights at any
time prior to the occurrence of a Common Stock Event, or (C) securities issuable
upon exercise of Rights which were held by a Person or its  Affiliates  prior to
the  Distribution  Date  as  long  as such  Person  is not  responsible  for the
occurrence of the Common Stock Event giving rise to the  Distribution  Date; and
provided,  further,  however,  that  nothing in this  Section 1(e) shall cause a
Person engaged in business as an underwriter of securities to be the "Beneficial
Owner"  of, or to  "beneficially  own," any  securities  acquired  through  such
Person's participation in good faith in a firm commitment underwriting until the
expiration of 40 days after the date of such acquisition.

         (f)      "Board" shall have the meaning set forth in the preamble to
                   this Agreement.

         (g) "Business Day" shall mean any day other than a Saturday,  Sunday or
a day on which banking  institutions in The Commonwealth of Massachusetts or the
city in which the principal office of the Rights Agent is located are authorized
or obligated by law or executive order to close.

         (h) "Close of Business" on any given date shall mean 5:00 p.m., Boston,
Massachusetts time, on such date; provided,  however, that if such date is not a
Business Day it shall mean 5:00 p.m.,  Boston,  Massachusetts  time, on the next
succeeding Business Day.

         (i)      "Closing Price" shall have the meaning set forth in Section
                   11(d) hereof.
<PAGE>


         (j) "Common  Stock"  shall mean the Common  Stock,  with a par value of
$1.00 per share, of the Trust, except that "Common Stock" when used with respect
to any Person  other than the Trust shall mean  either (i) the common  stock (or
other capital  stock or shares of  beneficial  interest) of such Person with the
greatest voting power, or (ii) the equity  securities or other equity  interests
having power to control or direct the management and affairs of such Person,  or
(iii) if such  Person is a  Subsidiary  of  another  Person,  the Person (A) who
ultimately  controls  such  Person  who is the  Subsidiary  and  (B)  which  has
outstanding such common stock (or such other capital stock, equity securities or
interests).

         (k)      "Common Stock Equivalents" shall have the meaning set forth in
                   Section 11(a)(iii) hereof.

         (l)  "Common  Stock  Event"  shall  mean the  occurrence  of any  event
described in (i) Section  11(a)(ii) hereof or (ii) clause (a), (b) or (c) of the
first sentence of Section 13 hereof.

         (m)      "Current Market Price" shall have the meaning set forth in 
                   Section 11(d) hereof.

         (n)      "Current Value" shall have the meaning set forth in Section
                   11(a)(iii) hereof.

         (o)      "Declaration Date" shall have the meaning set forth in the
                   preamble to this Agreement.

         (p) "Disqualified  Transferee" shall mean any Person who is a direct or
indirect  transferee of any Right from an Acquiring Person or an Affiliate of an
Acquiring  Person and became such a  transferee  (x) after the  occurrence  of a
Common Stock Event or (y) prior to or  concurrently  with the  Acquiring  Person
becoming such and received such Right pursuant to a transfer (whether or not for
value) (A) from the  Acquiring  Person to  holders of its Common  Stock or other
equity  securities  or to any  Person  with whom the  Acquiring  Person  has any
continuing agreement,  arrangement, or understanding (whether or not in writing)
regarding the  transferred  Right,  or (B) which a majority of the Board then in
office reasonably  determines is part of a plan,  arrangement,  or understanding
(whether  or not in  writing)  which has as a primary  purpose  or  effect,  the
avoidance of Section 7(e) hereof.

         (q) "Distribution Date" shall mean the date which is after the Dividend
Record  Date and the  later of (A) the  earlier  of (x) the  10th  Business  Day
following the Stock  Acquisition Date or (y) the 10th Business Day following the
Offer  Commencement  Date or (B) such specified or unspecified  date  thereafter
which is on or  after  the  Dividend  Record  Date,  as may be  determined  by a
majority of the Board then in office.

         (r)      "Dividend Record Date" shall have the meaning set forth in the
                   preamble to this Agreement.

         (s)      "Excess Amount" shall have the meaning set forth in Section
                  11(a)(iii) hereof.
<PAGE>

         (t) "Exchange Act" shall mean the  Securities  Exchange Act of 1934 (or
any successor act), as in effect on the Declaration Date.

         (u)      "Exchange Ratio" shall have the meaning set forth in Section
                  24(a) hereof.

         (v)      "Expiration Date" shall have the meaning set forth in Section
                   7(a) hereof.

         (w) "Offer  Commencement  Date" shall mean any date, after the Dividend
Record Date, which is the date of the commencement by any Person, other than (i)
the Trust,  (ii) a Subsidiary of the Trust,  (iii) any employee  benefit plan of
the  Trust or of any  Subsidiary  of the  Trust or (iv)  any  Person  organized,
appointed,  or established by the Trust or such Subsidiary pursuant to the terms
of any such plan, of a tender or exchange  offer  (including  when such offer is
first  published  or sent or given  within the  meaning of Rule  14d-2(a) of the
General  Rules and  Regulations  under the  Exchange  Act) if upon  consummation
thereof the Person and Affiliates  thereof would be the Beneficial  Owner of 10%
or more of the then outstanding  shares of Common Stock (including any such date
which is after  the date of this  Agreement  and  prior to the  issuance  of the
Rights on the Dividend Record Date or thereafter).

         (x)      "Officers' Certificate" has the meaning set forth in Section
                  20(b) hereof.

         (y)      "Other Consideration" has the meaning set forth in Section
                  6(a) hereof.

         (z)  "Person"  shall  mean  a  corporation,  association,  partnership,
limited liability company, joint venture, trust, estate, organization, business,
entity or individual.

         (aa)     "Purchase Price" shall have the meaning set forth in Section
                  7(b) hereof.

         (bb)     "Redemption Price" shall have the meaning set forth in Section
                  23 hereof.

         (cc)     "Rights" shall have the meaning set forth in the preamble to 
                  this Agreement.

         (dd) "Rights Agent" shall have the meaning set forth in the preamble of
this Agreement  subject to the appointment of a successor  Rights Agent pursuant
to Section 21 hereof.

         (ee)     "Rights Certificates" shall have the meaning set forth in
                   Section 3(a) hereof.

         (ff) "Stock  Acquisition  Date" shall mean the later of (i) the date of
the first  public  announcement  by an  Acquiring  Person  or the Trust  that an
Acquiring  Person has become such  (including the first date on which any filing
with any governmental  authority  disclosing that an Acquiring Person has become
such becomes  available  to the public),  or (ii) the date on which an executive
officer of the Trust has actual  knowledge  that an Acquiring  Person has become
such.

<PAGE>

         (gg)  "Subsidiary"  shall mean, as of any date, any Person of which the
Trust (or  other  specified  parent)  owns  directly,  or  indirectly  through a
Subsidiary or Subsidiaries, at least a majority of the outstanding capital stock
(or other shares of beneficial  interest)  entitled to vote generally,  or holds
directly,  or  indirectly  through  a  Subsidiary  or  Subsidiaries,  at least a
majority of  partnership  or similar  interests,  or is a general  partner or of
which the Trust (or other specified parent) owns voting securities sufficient to
elect at least a majority of the directors or trustees of such Person.

         (hh)     "Substitution Period" shall have the meaning set forth in 
                  Section 11(a)(iii) hereof.

         (ii)     "Summary of Rights" shall have the meaning set forth in 
                  Section 3(b) hereof.

         (jj)  "Trading  Day" shall mean a day on which the  principal  national
securities  exchange on which such  security is listed or admitted to trading is
open for the  transaction  of  business  or, if such  security  is not listed or
admitted  to  trading  on any  national  securities  exchange,  a day which is a
Business Day.

         (kk)     "Trust" shall have the meaning set forth in the preamble to
                  this Agreement.

         (ll)     "Trustees" shall mean the members of the Board.

Section 2.  Appointment of Rights Agent.

         The Trust  hereby  appoints  the  Rights  Agent to act as agent for the
Trust and the holders of the Rights (who, in  accordance  with Section 3 hereof,
shall prior to the Distribution Date also be the holders of the Common Stock) in
accordance  with the terms and  conditions  hereof,  and the Rights Agent hereby
accepts such  appointment.  The Trust may from time to time,  upon prior written
notice  to the  Rights  Agent,  appoint  such  Co-Rights  Agents  as it may deem
necessary or  desirable  and the  respective  duties of the Rights Agent and any
Co-Rights Agent shall be as the Trust shall determine;  provided,  however, that
the Rights Agent shall have no duty to supervise  and no liability  for the acts
or omissions of any Co-Rights Agent.

Section 3.  Issuance of Rights Certificates.

         (a) Until the  Distribution  Date,  (i) the  Rights  will be  evidenced
(subject  to  the  provisions  of  Section  3(b)  hereof)  by  the  certificates
representing  shares of Common Stock  registered  in the names of the holders of
the Common Stock (which certificates shall be deemed also to be certificates for
the associated  Rights) and not by separate  rights  certificates,  and (ii) the
Rights  will be  transferable  only  in  connection  with  the  transfer  of the
associated shares of Common Stock. As soon as practicable after the Distribution
Date, the Rights Agent will send by first-class,  insured, postage prepaid mail,
to each  record  holder of the Common  Stock as of the Close of  Business on the
Distribution  Date,  at the address of such holder  shown on the stock  transfer
records of the Trust, one or more rights certificates, in substantially the form
of Exhibit A hereto (the "Rights  Certificates"),  evidencing  in the  aggregate
that number of Rights to which such holder is  entitled in  accordance  with the
provisions of this Agreement.  As of and after the Distribution Date, the Rights
will be evidenced solely by such Rights Certificates. The Rights are exercisable

<PAGE>

only in accordance  with the  provisions of Section 7 hereof and are  redeemable
only in accordance with Section 23 hereof.

         (b) As soon as  practicable  after the Dividend  Record Date, the Trust
will cause a copy of a Summary of Rights,  in  substantially  the form  attached
hereto as  Exhibit  B (the  "Summary  of  Rights"),  to be sent by  first-class,
postage  prepaid mail, to each record holder of the Common Stock as of the Close
of Business on the Dividend  Record Date, at the address of such holder shown on
the stock transfer  records of the Trust.  With respect to certificates  for the
Common Stock  outstanding as of the Dividend Record Date, until the Distribution
Date, the Rights  associated with the shares of Common Stock represented by such
certificates will be evidenced by such certificates for the Common Stock and the
registered  holders of the Common Stock shall also be the registered  holders of
the associated Rights.  Until the Distribution Date (or the earlier  redemption,
expiration or termination  of the Rights),  the surrender for transfer of any of
the  certificates  representing  shares of the Common Stock  outstanding  on the
Dividend  Record  Date,  with or without a copy of the Summary of Rights,  shall
also  constitute  the  transfer of the Rights  associated  with the Common Stock
represented by such certificate.

         (c) Rights  shall be issued in  respect  of all shares of Common  Stock
issued (whether  originally issued or delivered from the Trust's treasury) after
the Dividend Record Date but prior to the earliest of (i) the Distribution Date,
(ii) the Expiration  Date, or (iii) the  redemption of the Rights.  Certificates
representing such shares of Common Stock and certificates  issued on transfer of
such  shares of Common  Stock,  with or without a copy of the Summary of Rights,
prior to the  Distribution  Date (or earlier  expiration  or  redemption  of the
Rights) shall be deemed also to be certificates for the associated  Rights,  and
commencing as soon as reasonably  practicable following the Dividend Record Date
shall bear the following legend (or a legend substantially in the form thereof):

         This  certificate  also evidences and entitles the holder to Rights set
         forth in a Rights Agreement between the issuer and BankBoston,  N.A. as
         Rights  Agent  (the  "Rights  Agent"),  dated as of July 22,  1998 (the
         "Rights  Agreement"),  the  terms of which are  incorporated  herein by
         reference  and a copy of which is on file at the  principal  offices of
         both the issuer and the Rights Agent. The Rights Agent will mail to the
         registered  holder of this certificate a copy of the Rights  Agreement,
         as in  effect  on the date of  mailing,  without  charge  upon  written
         request. Under certain circumstances set forth in the Rights Agreement,
         such Rights will be  evidenced  by  separate  certificates  and will no
         longer be evidenced by this  certificate.  Under certain  circumstances
         set forth in the  Rights  Agreement,  Rights  issued to, or held by any
         Person who is, was or becomes,  or acquires  shares from,  an Acquiring
         Person or any  Affiliate of an  Acquiring  Person (as each such term is
         defined in the Rights Agreement and generally relating to the ownership
         or purchase of large  shareholdings),  whether  currently held by or on
         behalf of such Person or  Affiliate or by certain  subsequent  holders,
         may become null and void.

Until the Distribution Date or the earlier redemption, expiration or termination

<PAGE>

of the Rights, the Rights associated with the Common Stock shall be evidenced by
the Common Stock  certificates  alone and the registered holders of Common Stock
shall also be the registered holders of the associated Rights, and the surrender
for transfer of any of such  certificates  shall also constitute the transfer of
the Rights  associated  with the Common Stock  represented by such  certificate.
Rights  shall be issued to the extent  provided  in Section 22 hereof  after the
Distribution Date and prior to the Expiration Date.

Form of Rights Certificates.ertificates

         (a) The Rights Certificates (and the form of assignment and the form of
exercise notice and certificate to be printed on the reverse thereof) shall each
be  substantially  in the form set forth in  Exhibit A hereto  and may have such
marks  of  identification   or  designation  and  such  legends,   summaries  or
endorsements  printed  thereon as the Trust may deem  appropriate and as are not
inconsistent  with the  provisions of this  Agreement,  or as may be required to
comply with any  applicable  law or with any rule or  regulation  made  pursuant
thereto or with any rule or regulation of any stock exchange on which the Rights
may from time to time be listed, or traded,  or to conform to usage.  Subject to
the provisions of Sections 11 and 22 hereof, the Rights  Certificates,  whenever
distributed,  shall be dated as of the  Dividend  Record Date (or, if the shares
pursuant to which the Rights are  attached are issued  thereafter,  such date of
issuance),  shall include the date of  countersignature  and on their face shall
entitle the holders thereof to purchase such number of shares of Common Stock as
shall be set forth therein at the Purchase Price (as hereinafter  defined),  but
the amount and type of  securities  issuable upon the exercise of each Right and
the Purchase Price shall be subject to adjustment as provided herein.

         (b) Any Rights Certificate issued pursuant to Section 3(a) or 22 hereof
that represents  Rights  beneficially  owned by (i) any Acquiring  Person or any
Affiliate of an Acquiring Person, or (ii) any Disqualified  Transferee,  and any
other  Rights  Certificate  issued  pursuant  to Section 6 or 11 hereof upon the
transfer,  exchange,  replacement,  or adjustment of any such Rights Certificate
shall contain (to the extent feasible) the following legend:

         The  Rights   represented  by  this  Rights  Certificate  are  or  were
         beneficially owned by a Person who was or became an Acquiring Person or
         an Affiliate  (which  includes both  affiliates  and  associates) of an
         Acquiring  Person (as each such term is defined in the Rights Agreement
         between the issuer and BankBoston,  N.A., as Rights Agent,  dated as of
         July 22,  1998 (the  "Rights  Agreement")).  Accordingly,  this  Rights
         Certificate and the Rights  represented hereby may become null and void
         in the circumstances specified in Section 7(e) of the Rights Agreement.
         The Rights Agent will mail to the registered holder of this certificate
         a copy  of the  Rights  Agreement,  as in  effect  on the  date of such
         mailing, without charge upon written request.

<PAGE>


Section 5.  Countersignature and Registration.egistration

         The Rights Certificates shall be executed on behalf of the Trust by its
President, or any Vice President, either manually or by facsimile signature, and
shall have affixed thereto the Trust's seal or facsimile  thereof which shall be
attested  by the  Secretary  or an  Assistant  Secretary  of the  Trust,  either
manually  or  by  facsimile   signature.   The  Rights   Certificates  shall  be
countersigned,  either manually or by facsimile  signature,  by the Rights Agent
and shall  not be valid for any  purpose  unless so  countersigned.  In case any
officer of the Trust who shall have signed any of the Rights  Certificates shall
cease to be such  officer  of the Trust  before  countersignature  by the Rights
Agent  and  issuance  and  delivery  by the  Trust,  such  Rights  Certificates,
nevertheless,  may be countersigned by the Rights Agent,  issued,  and delivered
with the same force and effect as though  the  person  who  signed  such  Rights
Certificates  had not  ceased  to be  such  officer  of the  Trust.  Any  Rights
Certificate  may be signed on behalf  of the  Trust by any  person  who,  at the
actual  date of the  execution  of such  Rights  Certificate,  shall be a proper
officer of the Trust to sign such  Rights  Certificate,  although at the date of
the execution of this Agreement any such person was not such an officer.

         Following the  Distribution  Date, the Rights Agent shall keep or cause
to be kept, at the office of the Rights Agent designated for such purpose, books
for registration and transfer of the Rights Certificates issued hereunder.  Such
books shall show the names and addresses of the respective holders of the Rights
Certificates,  the number of Rights  evidenced on its face by each of the Rights
Certificates, and the date of countersignature thereof by the Rights Agent.

Section 6.  Transfer, Split Up, Combination and Exchange of Rights Certificates;
Mutilated, Transfer, Split Up, Combination and Exchange of Rights Certificates;
Mutilated, Destroyed, Lost or Stolen Rights Certificates.

         (a) Subject to the provisions of Sections 4(b), 7(e), and 14 hereof, at
any time after the Close of Business on the  Distribution  Date, and at or prior
to the earlier of the Close of Business on the Expiration Date or the redemption
of the Rights, any Rights Certificate may be transferred,  split up, combined or
exchanged for another Rights Certificate or Rights  Certificates,  entitling the
registered  holder to  purchase  a like  number of shares of Common  Stock  (or,
following a Common Stock Event, Common Stock and/or such other securities, cash,
or other assets as shall be issuable in respect of the Rights in accordance with
the terms of this Agreement (such other  securities,  cash or other assets being
referred  to  herein  as  "Other  Consideration"))  as  the  Rights  Certificate
surrendered  then  entitled  such  holder  (or  former  holder  in the case of a
transfer) to purchase.  Any registered  holder  desiring to transfer,  split up,
combine or exchange  any Rights  Certificate  shall make such request in writing
delivered to the Rights Agent, and shall surrender the Rights  Certificate to be
transferred,  split up, combined, or exchanged at the office of the Rights Agent
designated for such purpose, accompanied by a signature guarantee and such other
documentation  as the Rights Agent may  reasonably  request.  Neither the Rights
Agent  nor the Trust  shall be  obligated  to take any  action  whatsoever  with
respect to the transfer of any such  surrendered  Rights  Certificate  until the
registered  holder shall have completed and signed the certificate  contained in
the form of assignment on the reverse side of such Rights  Certificate and shall
have provided such additional  evidence of the identity of the Beneficial  Owner
from whom the Rights evidenced by such Rights  Certificate are to be transferred
(or  the  Beneficial  Owner  to  whom  such  Rights  are to be  transferred)  or

<PAGE>

Affiliates thereof as the Trust shall reasonably request. Thereupon,  subject to
Sections 4(b), 7(e) and 14 hereof,  the Trust shall execute and the Rights Agent
shall   countersign  and  deliver  to  the  Person  entitled  thereto  a  Rights
Certificate  or Rights  Certificates,  as the case may be, as so requested.  The
Trust may require  payment by the holders of Rights of a sum sufficient to cover
any tax or  governmental  charge  that may be  imposed  in  connection  with any
transfer,  split up,  combination or exchange of Rights  Certificates  which the
Trust is not required to pay in accordance with Section 9(d) hereof.

         (b)  Upon  receipt  by the  Trust  and the  Rights  Agent  of  evidence
reasonably satisfactory to them of the loss, theft, destruction or mutilation of
a Rights Certificate, and, in case of loss, theft or destruction, the receipt of
indemnity or security  satisfactory to them, and upon reimbursement to the Trust
and the Rights Agent of all reasonable  expenses  incidental  thereto,  and upon
surrender to the Rights Agent and  cancellation  of the Rights  Certificate,  if
mutilated,  accompanied by a signature guarantee and such other documentation as
the Rights Agent may  reasonably  request,  the Trust will execute and deliver a
new Rights  Certificate  of like tenor to the Rights Agent for  countersignature
and delivery to the registered owner in lieu of the Rights  Certificate so lost,
stolen, destroyed, or mutilated.

Section 7.  Exercise of Rights; Purchase Price; Expiration Date of Rights.

         (a) Except as otherwise  provided herein,  the registered holder of any
Rights Certificate may exercise the Rights evidenced thereby in whole or in part
at any time from and after the Distribution Date and at or prior to the Close of
Business on July 22, 2008 (the "Expiration  Date") or the earlier  redemption of
the Rights.  Immediately  after the Close of Business on the Expiration Date (or
the earlier redemption of the Rights),  all Rights shall be extinguished and all
Rights  Certificates  shall  become  null and  void.  To  exercise  Rights,  the
registered  holder  of the  Rights  Certificate  evidencing  such  Rights  shall
surrender such Rights Certificate,  with the form of election to purchase on the
reverse side thereof and the certificate contained therein duly executed, to the
Rights  Agent at the office of the Rights  Agent  designated  for such  purpose,
accompanied by a signature  guarantee and such other documentation as the Rights
Agent may reasonably request,  together with payment in cash, only by electronic
or wire  transfer,  or by certified  check or bank check,  of the Purchase Price
with respect to the total  number of shares of Common Stock (or,  after a Common
Stock  Event,   shares  and/or  similar  units  of  Common  Stock  and/or  Other
Consideration) as to which the Rights are exercised (which payment shall include
any  additional  amount  payable by such Person in accordance  with Section 9(d)
hereof).  The Rights Agent shall  promptly  deliver to the Trust all payments of
the  Purchase  Price  received in respect of Rights  Certificates  accepted  for
exercise.

         (b) The purchase price for each share of Common Stock issuable pursuant
to the exercise of a Right (the "Purchase Price") shall initially be $160, shall
be subject to adjustment as provided in Section 11 hereof,  and shall be payable
in lawful money of the United States of America.

<PAGE>

         (c) Upon receipt of a Rights Certificate  representing the Rights, with
the form of election to purchase  set forth on the reverse  side thereof and the
certificate  contained  therein  duly  executed,  accompanied  by payment of the
Purchase  Price,  with  respect to each Right so  exercised,  the Rights  Agent,
subject to Sections 7(e),  11(a)(iii) and 20(k) hereof, shall thereupon promptly
(i)  requisition  from any transfer agent of the Common Stock (or from the Trust
if there shall be no such transfer  agent, or make available if the Rights Agent
is such transfer  agent)  certificates  for the total number of shares of Common
Stock to be purchased and the Trust hereby irrevocably  authorizes such transfer
agent to comply with any such request,  (ii) after receipt of such certificates,
cause the same to be delivered to or upon the order of the registered  holder of
such Rights  Certificate,  registered in such name or names as may be designated
in writing by such  holder,  and (iii) when  appropriate,  requisition  from the
Trust the amount of cash to be paid in lieu of issuance of a fractional share in
accordance with Section 14 hereof and after receipt  promptly  deliver such cash
to or upon the order of the registered holder of such Rights Certificate.  After
the  occurrence  of a Common  Stock  Event,  the Trust shall make all  necessary
arrangements so that any Other  Consideration then deliverable in respect of the
Rights is available for  distribution by the Rights Agent.  For purposes of this
Section 7, the Rights Agent shall be entitled to rely, and shall be protected in
relying,  on an  Officers'  Certificate  from the Trust to the  effect  that the
Distribution Date has occurred.

         (d)  Subject  to  Sections  4(b),  7(e)  and 14  hereof,  in  case  the
registered  holder of any Rights  Certificate  shall  exercise less than all the
Rights evidenced thereby, a new Rights Certificate  evidencing Rights equivalent
to the Rights remaining unexercised shall be executed and delivered by the Trust
to the Rights Agent and  countersigned  and delivered by the Rights Agent to the
registered holder of such Rights Certificate or to such holder's duly authorized
assigns.

         (e)  Notwithstanding  anything in this Agreement to the contrary,  from
and after the first occurrence of a Common Stock Event, any Rights  beneficially
owned by (i) an Acquiring Person or an Affiliate of an Acquiring Person, or (ii)
a Disqualified Transferee shall become null and void without any further action,
and no holder of such Rights  shall have any rights  whatsoever  with respect to
such Rights,  whether  under any provision of this  Agreement or otherwise.  The
Trust shall use all  reasonable  efforts to ensure that the  provisions  of this
Section 7(e) and Section 4(b) hereof are complied with, but the Trust shall have
no  liability to any holder of Rights  Certificates  or other Person and none of
the terms of this  Agreement  or the  Rights  shall be deemed to be waived  with
respect to such  holder or other  Person as a result of any failure by the Trust
to make any determinations  with respect to an Acquiring Person or any Affiliate
of an Acquiring Person or Disqualified  Transferees  hereunder or any failure to
have a legend placed on any Rights  Certificate in accordance  with Section 4(b)
hereof or on any Common  Stock  certificate  in  accordance  with  Section  3(c)
hereof.

<PAGE>


         (f) Notwithstanding anything in this Agreement to the contrary, neither
the Rights Agent nor the Trust shall be  obligated to undertake  any action with
respect  to a  holder  of any  Rights  Certificate  upon the  occurrence  of any
purported  exercise  thereof  unless such holder  shall have (i)  completed  and
signed the  certificate  contained in the form of election to purchase set forth
on the reverse side of the Rights Certificate surrendered for such exercise, and
(ii) provided such additional  evidence of the identity of the Beneficial  Owner
from whom the Rights evidenced by such Rights  Certificate are to be transferred
(or  the  Beneficial  Owner  to  whom  such  Rights  are to be  transferred)  or
Affiliates thereof as the Trust shall reasonably request.

Section 8.  Cancellation and Destruction of Rights Certificates.

         All Rights Certificates surrendered for the purpose of and accepted for
exercise,  or  surrendered  for the purpose of redemption,  transfer,  split up,
combination  or exchange  shall,  if  surrendered  to the Trust or to any of its
agents  (other than the Rights  Agent),  be  delivered  to the Rights  Agent for
cancellation or in canceled form, or, if surrendered to the Rights Agent,  shall
be canceled by it, and no Rights  Certificates  shall be issued in lieu  thereof
except as expressly  permitted by any of the provisions of this  Agreement.  The
Trust shall deliver to the Rights Agent for cancellation and retirement, and the
Rights Agent shall so cancel and retire, any other Rights Certificates purchased
or retired by the Trust  otherwise  than upon the exercise  thereof.  The Rights
Agent shall deliver all canceled  Rights  Certificates  to the Trust, or may, at
the written  request of the Trust,  but shall not be required  to,  destroy such
canceled  Rights  Certificates,  and in such case shall deliver a certificate of
destruction thereof to the Trust.

Section 9.  Reservation and Availability of Shares of Common Stock; Other 
            Covenants.

         (a) The Trust  covenants and agrees that on and after the  Distribution
Date, it shall use reasonable efforts to cause to be reserved and kept available
out of its  authorized  and unissued  shares of Common Stock (or,  following the
occurrence of a Common Stock Event, out of its authorized and unissued shares of
Common Stock and/or Other  Consideration,  or out of its  authorized  and issued
shares  held in its  treasury),  the  number  of shares  of  Common  Stock  (or,
following  a  Common   Stock   Event,   shares  of  Common  Stock  and/or  Other
Consideration) that, except as provided in Section 11(a)(iii) hereof, would then
be  sufficient  to  permit  the  exercise  in  full of all  outstanding  Rights;
provided,  however,  that the  reservation  of such shares  shall be subject and
subordinate  to any other  reservation  of such  shares made by the Trust at any
time for any lawful purpose; provided,  further, however, that in no event shall
such  failure  to so  reserve  shares  affect the rights of any holder of Rights
hereunder.

         (b) The Trust  covenants and agrees that on and after the  Distribution
Date so long as the Common Stock (or,  following a Common  Stock  Event,  shares
and/or similar units of Common Stock and/or Other  Consideration)  issuable upon
the exercise of Rights may be listed on any national  securities  exchange,  the
Trust shall use its best efforts to cause all shares (or similar units) reserved
for such issuance to be listed on such exchange upon official notice of issuance
upon such exercise.

<PAGE>


         (c) The Trust  covenants  and agrees that it shall take all such action
as may be necessary  to ensure that each share of Common Stock (or,  following a
Common Stock Event,  each share and/or similar unit of Common Stock and/or Other
Consideration)  delivered upon exercise of Rights shall, at the time of delivery
of the  certificates  for such  shares  (or  units),  subject  to payment of the
Purchase  Price,  be duly and validly  authorized  and issued and fully paid and
nonassessable.

         (d) The  Trust  covenants  and  agrees  that it shall  pay when due and
payable any and all federal and state transfer  taxes and similar  charges which
may be payable in respect of the issuance or delivery of the Rights Certificates
or of any shares of Common Stock (or, following the occurrence of a Common Stock
Event,   each  share   and/or   similar   unit  of  Common  Stock  and/or  Other
Consideration) upon the exercise of Rights;  provided,  however,  that the Trust
shall not be required to pay any transfer tax which may be payable in respect of
any transfer  involved in the transfer or delivery of Rights  Certificates or in
the  issuance or delivery of  certificates  for any shares of Common  Stock (or,
following the occurrence of a Common Stock Event, each share and/or similar unit
of Common  Stock and/or  Other  Consideration)  in a name other than that of the
registered holder of the Rights  Certificate  evidencing Rights  surrendered for
exercise or to issue or deliver any  certificates for any shares of Common Stock
(and,  following  the  occurrence  of a Common  Stock Event,  any shares  and/or
similar units of Common Stock and/or Other  Consideration)  upon the exercise of
any Rights  until any such tax shall have been paid (any such tax being  payable
by the holder of such Rights  Certificate  at the time of surrender  thereof) or
until it has been  established to the Trust's  satisfaction  that no such tax is
due.

         (e) The  Trust  shall  use its best  efforts  (i) to  file,  as soon as
practicable  following the earliest date after the first  occurrence of a Common
Stock  Event on which  the  consideration  to be  delivered  by the  Trust  upon
exercise of the Rights has been determined in accordance with this Agreement, or
as soon as is required by law following the  Distribution  Date, as the case may
be, a  registration  statement  under the Act,  with  respect to the  securities
issuable upon exercise of the Rights on an appropriate  form, (ii) to cause such
registration  statement to become  effective as soon as  practicable  after such
filing, and (iii) to cause such registration statement to remain effective (with
a prospectus at all times meeting the requirements of the Act) until the earlier
of (A) the  date as of which  the  Rights  are no  longer  exercisable  for such
securities,  or (B) the Expiration Date or earlier redemption of the Rights. The
Trust  will also take such  action  as may be  appropriate  under,  or to ensure
compliance  with, the securities or "blue sky" laws of the various states of the
United States in connection with the exercisability of the Rights. The Trust may
temporarily  suspend,  for a period of time not to exceed ninety (90) days after
the date set forth in clause (i) of the first sentence of this Section 9(e), the
exercisability  of the  Rights in order to  prepare  and file such  registration
statement or to permit it to become  effective.  Upon any such  suspension,  the
Trust shall issue a public  announcement  stating that the exercisability of the
Rights has been temporarily suspended. The Trust shall thereafter issue a public
announcement   at  such  time  as  the   suspension  is  no  longer  in  effect.
Notwithstanding  any  provision of this  Agreement to the  contrary,  the Rights
shall not be exercisable in any jurisdiction unless the requisite  qualification
in such jurisdiction shall have been obtained.

<PAGE>

Section 10.  Common Stock Record Date; Etc

         Each  Person in whose  name any  certificate  for any  shares of Common
Stock (or,  following  the  occurrence  of a Common Stock Event,  shares  and/or
similar  units of Common Stock and/or  Other  Consideration)  is issued upon the
exercise of Rights shall for all purposes be deemed to have become the holder of
record of such shares of Common Stock (or such shares  and/or  similar  units of
Common  Stock  and/or  Other  Consideration,  as the  case  may be)  represented
thereby,  and such certificate shall be dated the date which is the later of (i)
the date upon  which the  Rights  Certificate  evidencing  such  Rights was duly
surrendered,  or (ii) the date upon which payment of the Purchase Price (and any
applicable transfer taxes) in respect thereof was made; provided,  however, that
if such date is a date upon which the relevant  transfer  books of the Trust are
closed,  such Person  shall be deemed to have  become the record  holder of such
shares (or Other  Consideration)  on, and such  certificate  shall be dated, the
next succeeding Business Day on which such transfer books of the Trust are open;
provided,  further,  that the Trust covenants and agrees that it shall not close
such transfer books for a period  exceeding ten consecutive  days.  Prior to the
exercise of the Rights evidenced thereby (which shall be deemed to have occurred
on the date such  certificate for shares and/or similar units of Common Stock or
Other  Consideration  shall be dated in  accordance  with this  Section 10), the
holder of a Rights Certificate,  as such, shall not be entitled to any rights of
a  security  holder of the Trust  with  respect  to the  shares of Common  Stock
(and/or such shares or similar units of Common Stock or Other Consideration) for
which the Rights shall be exercisable,  including, without limitation, the right
to vote,  to  receive  dividends  or other  distributions,  or to  exercise  any
preemptive  rights,  and shall not be  entitled  to  receive  any  notice of any
proceedings of the Trust, except as expressly provided herein.

Section 11.  Antidilution Adjustments. 

         The  Purchase  Price and the number and kind of  securities  covered by
each Right and the number of Rights  outstanding  are subject to adjustment from
time to time as provided in this Section 11.
         (a)(i)  In the  event  that  the  Trust  shall at any  time  after  the
         Declaration  Date (A) declare  and pay a dividend  on the Common  Stock
         payable in shares of Common Stock, (B) subdivide the outstanding Common
         Stock,  (C) combine the outstanding  Common Stock into a smaller number
         of  shares,  or (D)  issue,  change,  or  alter  any of its  shares  of
         beneficial  interest or other  capital stock in a  reclassification  or
         recapitalization  (including  any such  reclassification  in connection
         with a consolidation  or merger in which the Trust is the continuing or
         surviving  Person),  except as otherwise provided in this Section 11(a)
         and Section  7(e)  hereof,  then,  and in each such case,  the Purchase
         Price in effect at the time of the record date for such dividend or the
         effective time of such subdivision,  combination,  reclassification  or
         recapitalization,  and the  number  and kind of  shares  of  beneficial
         interest or other capital stock issuable upon exercise of the Rights at
         such time, shall be proportionately  adjusted so that the holder of any
         Right  exercised  after such time  shall be  entitled  to  receive  the
         aggregate  number and kind of shares of Common Stock or other shares of
         beneficial  interest or other  capital  stock which,  if such Right had
         been  exercised  immediately  prior to such time at the Purchase  Price
         then in effect  and at a time when the  transfer  books for the  Common
         Stock (or other  capital  stock) of the Trust  were open,  such  holder

<PAGE>

         would have owned upon such  exercise  and been  entitled  to receive by
         virtue of such dividend, subdivision, combination,  reclassification or
         recapitalization.  If an event occurs which would require an adjustment
         under both this Section  11(a)(i)  and Section  11(a)(ii)  hereof,  the
         adjustment  provided in this Section  11(a)(i) shall be in addition to,
         and shall be made prior to, any adjustment required pursuant to Section
         11(a)(ii) hereof.

         (ii)  In the event

                           (A) any Person shall at any time after the Dividend
                  Record Date become an Acquiring Person; or

                           (B) any  Acquiring  Person  or any  Affiliate  of any
                  Acquiring  Person, at any time after the Dividend Record Date,
                  directly  or  indirectly,  shall (1)  merge  into the Trust or
                  otherwise  combine with the Trust,  and the Trust shall be the
                  continuing  or  surviving   corporation   of  such  merger  or
                  combination  and the Common  Stock of the Trust  shall  remain
                  outstanding   and  no  shares  thereof  shall  be  changed  or
                  otherwise  transformed  into stock or other  securities of any
                  other Person or the Trust or cash or any other  property,  (2)
                  in one or more transactions,  transfer any assets to the Trust
                  in  exchange  (in whole or in part) for shares of any class of
                  its equity  securities or for  securities  exercisable  for or
                  convertible  into shares of any such class or otherwise obtain
                  from the Trust, with or without consideration,  any additional
                  shares  of any such  class or  securities  exercisable  for or
                  convertible  into shares of any such class (other than as part
                  of a pro rata distribution to all holders of such class),  (3)
                  sell, purchase, lease, exchange, mortgage, pledge, transfer or
                  otherwise   dispose  (in  one   transaction  or  a  series  of
                  transactions) to, from or with the Trust or any of the Trust's
                  Subsidiaries,  assets with an  aggregate  fair market value in
                  excess of 25% of the assets of the Trust and its  Subsidiaries
                  determined  on a  consolidated  basis on terms and  conditions
                  less  favorable  to the Trust than the Trust  would be able to
                  obtain through  arm's-length  negotiation with an unaffiliated
                  third party,  (4) receive any  compensation  from the Trust or
                  any of the Trust's  Subsidiaries  other than compensation as a
                  director of the Trust or for full-time employment as a regular
                  employee  at rates in  accordance  with the  Trust's  (or such
                  Subsidiary's) past practices,  (5) receive the benefit (except
                  proportionately  as a  shareholder),  of any loans,  advances,
                  guarantees,  pledges or other financial assistance provided by
                  the Trust or any of its  Subsidiaries  on terms and conditions
                  less  favorable  to the  Trust (or such  Subsidiary)  than the
                  Trust would be able to obtain through arm's-length negotiation
                  with an  unaffiliated  third party or (6) commence a tender or
                  exchange offer for securities of the Trust; or

                           (C) during such time as there is an Acquiring  Person
                  at any time after the Dividend Record Date, there shall be any

<PAGE>

                  reclassification  of  securities  (including  any  combination
                  thereof),  or  recapitalization of the Trust, or any merger or
                  consolidation  of the  Trust  with  any  of  its  Subsidiaries
                  (whether  or not  with  or  into  or  otherwise  involving  an
                  Acquiring Person or any Affiliate of an Acquiring Person),  or
                  any  repurchase  by the  Trust or any of its  Subsidiaries  of
                  shares of the Common Stock of the Trust, or any other class or
                  series   of   securities   issued   by   the   Trust,    which
                  reclassification,  recapitalization,  merger, consolidation or
                  repurchase  is effected at a time when a majority of the Board
                  consists  of  persons  who are  the  Acquiring  Person  or its
                  Affiliates, or nominees or designees of any thereof, which has
                  the effect, directly or indirectly, of increasing by more than
                  1% the  proportionate  share of the outstanding  shares of any
                  class of equity  securities or securities  exercisable  for or
                  convertible  into any class of equity  securities of the Trust
                  or any of its  Subsidiaries  which is directly  or  indirectly
                  owned by an Acquiring  Person or any Affiliate of an Acquiring
                  Person

         then,  in each such case,  upon the Close of Business 10 Business  Days
         after the occurrence of such event,  proper  provision shall be made so
         that each holder of a Right, except as provided in Section 7(e) hereof,
         shall  thereafter have the right to receive,  upon exercise  thereof at
         the Purchase Price in effect at the time of exercise in accordance with
         the terms of this Agreement, in lieu of one share of Common Stock, such
         number of shares of Common Stock of the Trust as shall equal the result
         obtained  by (x)  multiplying  an  amount  equal  to the  then  current
         Purchase  Price by an  amount  equal to the  number of shares of Common
         Stock for which a Right was or would have been exercisable  immediately
         prior to the first  occurrence  of any such  event  whether or not such
         Right was then exercisable, and (y) dividing that product by 50% of the
         Current  Market  Price per share of the  Common  Stock of the Trust (as
         defined  in Section  11(d)  hereof)  determined  as of the date of such
         first occurrence.
                  (iii) In lieu of issuing whole or fractional  shares of Common
         Stock in  accordance  with Section 7(c) hereof,  the Trust shall (i) in
         the  event  that the  number  of  shares  of  Common  Stock  which  are
         authorized by the Trust's  Declaration of Trust but not  outstanding or
         reserved  for issuance  for  purposes  other than upon  exercise of the
         Rights are not  sufficient to permit the exercise in full of the Rights
         in  accordance  with Section 7(c) hereof,  or (ii) if a majority of the
         Board then in office  determines  that it would be appropriate  and not
         contrary  to the  interests  of the  holders of Rights  (other than any
         Acquiring  Person or  Disqualified  Transferee  or any Affiliate of the
         Acquiring Person or Disqualified Transferee),  (A) determine an amount,
         if any, (the "Excess Amount") equal to the excess of (1) the value (the
         "Current  Value")  of the whole or  fractional  shares of Common  Stock
         issuable upon the exercise of a Right in  accordance  with Section 7(c)
         hereof,  over (2) the  Purchase  Price,  and (B) with  respect  to each
         Right,  (subject to Section  7(e) hereof)  make  adequate  provision to
         substitute  for such whole or fractional  shares of Common Stock,  upon
         payment of the applicable  Purchase Price, (1) cash, (2) a reduction in
         the Purchase Price, (3) Common Stock or other equity  securities of the
         Trust  (including,  without  limitation,  shares or units of  preferred
         stock  which the Board has  deemed in good faith to have the same value

<PAGE>

         as a share of Common  Stock  (such  shares  of  preferred  stock  being
         referred to herein as "Common Stock Equivalents")), (4) debt securities
         of the Trust, (5) other assets, or (6) any combination of the foregoing
         (which  would  include  the  additional  consideration  provided to any
         holder by reducing the Purchase  Price) having an aggregate value equal
         to the Current Value, where such aggregate value has been determined by
         the Board;  provided,  however,  subject to the  provisions  of Section
         9(e),  that if the  Trust  shall not have made  adequate  provision  to
         deliver value pursuant to clause (B) above within 30 days following the
         Close of  Business  10 Business  Days after the first  occurrence  of a
         Common Stock Event  described  in Section  11(a)(ii)  hereof,  then the
         Trust shall be obligated to deliver, upon the surrender for exercise of
         a Right and without requiring  payment of the Purchase Price,  whole or
         fractional  shares of Common Stock (to the extent  available) and then,
         if necessary,  cash,  securities,  and/or assets which in the aggregate
         are equal to the Excess  Amount.  If the Board shall  determine in good
         faith that it is likely  that  sufficient  additional  shares of Common
         Stock or Common Stock Equivalents could be authorized for issuance upon
         exercise in full of the Rights,  the 30-day  period set forth above may
         be  extended  to the  extent  necessary,  but  not  more  than  90 days
         following  the  Close of  Business  10  Business  Days  after the first
         occurrence  of such a Common Stock Event (such 30 day period) as it may
         be  extended to 90 days,  is  referred  to herein as the  "Substitution
         Period").  To the extent that the Trust  determines that some action is
         to be  taken  pursuant  to the  preceding  provisions  of this  Section
         11(a)(iii),  the Trust (x)  shall  provide,  subject  to  Section  7(e)
         hereof,  that  (except as to the form of  consideration  which shall be
         determined  as  appropriate  by a majority of the Board then in office)
         such action shall apply uniformly to all outstanding Rights which shall
         not have become null and void,  and (y) may suspend the  exercisability
         of the Rights until the expiration of the Substitution  Period in order
         to seek any  authorization  of  additional  shares and/or to decide the
         appropriate form of distribution to be made pursuant to such provisions
         and  to  determine  the  value  thereof.  In  the  event  of  any  such
         suspension,  the Trust shall issue a public  announcement  stating that
         the  exercisability of the Rights has been temporarily  suspended.  The
         Trust shall thereafter issue a public  announcement at such time as the
         suspension  is no  longer  in  effect.  For  purposes  of this  Section
         11(a)(iii),  the value of the Common Stock  issuable upon exercise of a
         Right in  accordance  with  Section  7(c)  hereof  shall be the Current
         Market Price per share of the Common Stock (as  determined  pursuant to
         Section  11(d)  hereof) on the Close of Business 10 Business Days after
         the date of the first  occurrence  of such a Common Stock Event and the
         value of any Common Stock Equivalent shall be deemed to be equal to the
         Current Market Price per share of the Common Stock on such date.

         (b) In the event the Trust shall, after the Dividend Record Date, fix a
record date for the  issuance of any options,  warrants,  or other rights to all
holders of Common Stock entitling them (for a period expiring within 45 calendar
days after such record  date) to  subscribe  for or purchase (i) Common Stock or
(ii)  securities  convertible  into Common  Stock at a price per share of Common
Stock (or having a conversion  price per share of Common Stock, if a security is
convertible  into Common Stock) less than the Current  Market Price per share of
Common Stock (determined in accordance with Section 11(d) hereof)  determined as

<PAGE>

of such record date,  the Purchase  Price to be in effect after such record date
shall be  determined by  multiplying  the Purchase  Price in effect  immediately
prior to such  record date by a fraction,  the  numerator  of which shall be the
number of shares of Common Stock outstanding on such record date plus the number
of shares of Common  Stock which the  aggregate  minimum  offering  price of the
total  number of shares of Common Stock so to be offered  (and/or the  aggregate
minimum conversion price of such convertible  securities so to be offered) would
purchase at such Current Market Price, and the denominator of which shall be the
number of  shares  of Common  Stock  outstanding  on such  record  date plus the
maximum  number  of  additional  shares  of  Common  Stock  to  be  offered  for
subscription  or  purchase  (or the  maximum  number of shares  into  which such
convertible  securities  so  to  be  offered  are  convertible).  In  case  such
subscription price may be paid by delivery of consideration part or all of which
shall be in a form other than cash, for purposes of this Section 11(b) the value
of such  consideration  shall be the fair market value  thereof as determined in
good faith by the Board (which  determination shall be described in an Officers'
Certificate  filed with the Rights  Agent).  Shares of Common  Stock owned by or
held for the  account  of the  Trust  shall not be  deemed  outstanding  for the
purpose of any such  computation.  Such  adjustment  shall be made  successively
whenever  such a record  date is  fixed;  and in the  event  that  such  options
warrants or other rights are not so issued, the Purchase Price shall be adjusted
to be the  Purchase  Price which would then be in effect if such record date had
not been fixed  (subject,  however,  to such other  adjustments  as are provided
herein).

         (c) In the event that the Trust shall,  after the Dividend Record Date,
fix a record  date for the  making of a  distribution  to all  holders of Common
Stock (including any such  distribution  made in connection with a consolidation
or merger in which the Trust is the surviving or continuing Person) of evidences
of  indebtedness,  cash (other than cash  dividends  paid out of the earnings or
retained earnings of the Trust and its Subsidiaries determined on a consolidated
basis in accordance with generally accepted accounting  principles  consistently
applied), other property (other than a dividend payable in a number of shares of
Common  Stock,  but  including  any  dividend  payable  in shares of  beneficial
interest or other capital stock other than Common Stock), or subscription rights
or warrants (excluding those referred to in Section 11(b) hereof),  the Purchase
Price to be in effect after such record date shall be determined by  multiplying
the  Purchase  Price  in  effect  immediately  prior  to such  record  date by a
fraction,  of which the numerator shall be the Current Market Price per share of
Common Stock (as defined in Section 11(d)  hereof)  determined as of such record
date,  less (ii) the sum of (A) that  portion  of cash plus (B) the fair  market
value,  as determined in good faith by the Board (which  determination  shall be
described  in an  Officers'  Certificate  filed with the  Rights  Agent) of that
portion of such  evidences of  indebtedness,  such other  property,  and/or such
subscription  rights or warrants  applicable to one share of Common Stock and of
which the denominator shall be such Current Market Price per share of the Common
Stock. Such adjustments  shall be made successively  whenever such a record date
is fixed; and in the event such  distribution is not so made, the Purchase Price
shall again be adjusted to be the  Purchase  Price which would then be in effect
if such  record  date  had not  been  fixed  (subject,  however,  to such  other
adjustments as are provided herein).

         (d) For  purposes of any  computation  pursuant  to Section  11(a)(iii)

<PAGE>

hereof,  the "Current  Market  Price" per share (or unit) of any security on any
date  shall be  deemed to be the  average  of the  daily  Closing  Price of such
security for the 10 consecutive Trading Days immediately after such date and for
the purpose of any other computation  hereunder,  the "Current Market Price" per
share (or unit) of any security on any date shall be deemed to be the average of
the daily  Closing Price of such  security for the 20  consecutive  Trading Days
immediately prior to such date;  provided,  however,  that in the event that the
Current  Market Price per share of such security is  determined  during a period
following the  announcement  by the issuer of such security of (i) a dividend or
distribution  on such security  payable in shares (or units) of such security or
securities  convertible  into  shares (or units) of such  security,  or (ii) any
subdivision,  combination or reclassification of such security, and prior to the
expiration of such 10 Trading Days or 20 Trading Days after (A) the  ex-dividend
date  for  such  dividend  or  distribution,  or (B) the  record  date  for such
subdivision,  combination or reclassification,  as the case may be, then, and in
each such case,  the "Current  Market  Price" shall be the Closing Price of such
security  on the last day of such  respective  10 Trading  Day or 20 Trading Day
period.  For purposes of this Agreement,  the "Closing Price" of any security on
any day shall be the last sale price,  regular  way,  with respect to shares (or
units) of such  security,  or, in case no such sale takes place on such day, the
average of the closing bid and asked  prices,  regular way, with respect to such
security, in either case as reported in the principal  consolidated  transaction
reporting system with respect to securities listed or admitted to trading on the
New York Stock  Exchange;  or, if such  security  is not listed or  admitted  to
trading  on  the  New  York  Stock  Exchange,   as  reported  in  the  principal
consolidated  transaction  reporting system with respect to securities listed on
the principal national  securities  exchange on which such security is listed or
admitted  to  trading;  or, if such  security  is not so listed or  admitted  to
trading,  the last quoted  sale price with  respect to shares (or units) of such
security, or, if not so quoted, the average of the high bid and low asked prices
in the  over-the-counter  market  with  respect  to  shares  (or  units) of such
security,  as reported by the National  Association of Securities Dealers,  Inc.
Automated  Quotation  System or such other similar system then in use; or, if on
any such date such security is not quoted by any such organization,  the average
of the  closing bid and asked  prices with  respect to shares (or units) of such
security,  as furnished by a  professional  market maker making a market in such
security  selected by the Board;  or, if no such market maker is available,  the
fair  market  value of  shares  (or  units) of such  security  as of such day as
determined in good faith by the Board (which determination shall be described in
an Officers' Certificate filed with the Rights Agent).

         (e) No  adjustment  in the  Purchase  Price  shall be  required  unless
adjustment  would  require an increase or decrease of at least 1% in such price;
provided,  however,  that any adjustments  which by reason of this Section 11(e)
are not  required to be made shall be carried  forward and taken into account in
any subsequent adjustment.  All calculations under this Section 11 shall be made
to the  nearest  cent or to the  nearest  ten-thousandth  of a share (or similar
unit) of Common Stock or other securities. Notwithstanding the first sentence of
this Section 11(e), any adjustment  required by this Section 11 shall be made no
later than the earlier of (i) three years from the date of the transaction which
mandates the adjustment or (ii) the Expiration Date. Anything in this Section 11
to the  contrary  notwithstanding,  the  Trust  shall be  entitled  to make such
reductions in the Purchase  Price, in addition to those required by this Section
11, as it in its  discretion  shall  determine to be advisable in order that any

<PAGE>

dividends  payable in shares of  beneficial  interest  or other  capital  stock,
subdivision of shares,  distribution  of rights to purchase shares of beneficial
interest or other stock or securities, or distribution of securities convertible
into or exchangeable for shares of beneficial  interest or other stock hereafter
made by the Trust to its shareholders shall not be taxable.

         (f) In the event that at any time, as a result of an adjustment made in
respect of a Common Stock Event,  the holder of any Right  thereafter  exercised
shall  become  entitled  to receive any shares of  beneficial  interest or other
capital  stock of the Trust other than shares of Common  Stock,  thereafter  the
number of such other  shares so  receivable  upon  exercise of any Right and the
Purchase  Price thereof  shall be subject to  adjustment  from time to time in a
manner and on terms as nearly  equivalent as practicable to the provisions  with
respect to such other shares  contained in Sections  11(a),  (b), (c), (e), (g),
(h), (i), (j), (k), (m) and (p) hereof, and the provisions of Sections 7, 9, 10,
11(d),  13 and 14 hereof with  respect to the shares of Common Stock shall apply
on like terms to any such other shares.

         (g)  All  Rights  originally  issued  by the  Trust  subsequent  to any
adjustment  made to the Purchase  Price  hereunder  shall  evidence the right to
purchase,  at the adjusted  Purchase Price, the number of shares of Common Stock
purchasable from time to time hereunder upon exercise of the Rights  represented
thereby, all subject to further adjustment as provided herein.

         (h) Unless the Trust shall have  exercised  its election as provided in
Section 11(i) hereof,  upon each adjustment of the Purchase Price as a result of
the  calculations  made pursuant to Sections 11(b) and 11(c) hereof,  each Right
outstanding  immediately prior to the making of such adjustment shall thereafter
evidence the right to purchase,  at the adjusted  Purchase Price, that number of
shares of Common Stock  (calculated  to the nearest  ten-thousandth  of a share)
obtained by (i)  multiplying (x) the number of shares of Common Stock covered by
a Right  immediately  prior to this  adjustment,  by (y) the  Purchase  Price in
effect  immediately  prior to such  adjustment of the Purchase  Price,  and (ii)
dividing  the product so obtained by the  Purchase  Price in effect  immediately
after such adjustment of the Purchase Price.

         (i) Assuming that no other  adjustment  pursuant to this Section 11 has
been  made,  the Trust may elect on or after the date of any  adjustment  of the
Purchase Price to adjust the number of Rights in substitution for any adjustment
in the  number of shares of Common  Stock  purchasable  upon the  exercise  of a
Right.  Each of the Rights  outstanding  after such  adjustment of the number of
Rights shall be exercisable for the number of shares of Common Stock for which a
Right was exercisable  immediately prior to such adjustment.  Each Right held of
record prior to such adjustment of the number of Rights shall become that number
of Rights  (calculated to the nearest  ten-thousandth)  obtained by dividing the
Purchase Price in effect  immediately  prior to such  adjustment of the Purchase
Price by the Purchase Price in effect  immediately  after such adjustment of the
Purchase  Price.  The Trust shall make a public  announcement of its election to
adjust the number of Rights, indicating the record date for the adjustment, and,
if known at the time, the amount of the adjustment to be made.  This record date

<PAGE>

may be the date on which the Purchase  Price is adjusted or any day  thereafter,
but,  if the Rights  Certificates  have been  issued,  shall be at least 10 days
later than the date of the public announcement. If Rights Certificates have been
issued,  upon each  adjustment of the number of Rights  pursuant to this Section
11(i) the Trust shall,  as promptly as  practicable,  cause to be distributed to
holders of record of Rights Certificates on such record date Rights Certificates
evidencing,  subject to Section 14 hereof,  the additional  Rights to which such
holders shall be entitled as a result of such  adjustment,  or, at the option of
the  Trust,  shall  cause  to be  distributed  to  such  holders  of  record  in
substitution  and replacement for the Rights  Certificates  held by such holders
prior to the date of adjustment,  and upon surrender thereof, if required by the
Trust, new Rights  Certificates  evidencing all the Rights to which such holders
shall  be  entitled  after  such  adjustment.   Rights  Certificates  so  to  be
distributed shall be issued,  executed, and countersigned in the manner provided
for herein  (and may bear,  at the option of the Trust,  the  adjusted  Purchase
Price) and shall be  registered  in the names of the holders of record of Rights
Certificates on the record date specified in the public announcement.

         (j)  Irrespective  of any adjustment or change in the Purchase Price or
the number of whole or fractional  shares of Common Stock issuable upon exercise
of such Rights,  the Rights  Certificates  theretofore and thereafter issued may
continue  to express  the  Purchase  Price per share and the number of shares of
Common Stock which were  expressed  in the initial  Rights  Certificates  issued
hereunder.
         (k) Before  taking any action that would cause an  adjustment  reducing
the Purchase Price below the then par value,  if any, of the number of shares of
Common  Stock  issuable  upon  exercise of the Rights,  the Trust shall take any
action which may, in the opinion of its counsel,  be necessary in order that the
Trust may validly and legally issue such number of fully paid and  nonassessable
shares of Common Stock at such adjusted Purchase Price.

         (l) In any  case  in  which  this  Section  11  shall  require  that an
adjustment  in the  Purchase  Price be made  effective as of a record date for a
specified event, the Trust may elect to defer until the occurrence of such event
the  issuing to the holder of any Right  exercised  after such  record  date the
number of shares of Common  Stock and other  shares of  beneficial  interest  or
other  capital  stock or  securities  of the Trust,  if any,  issuable upon such
exercise over and above the number of shares of Common Stock and other shares of
beneficial  interest or other capital stock or securities of the Trust,  if any,
issuable upon such  exercise on the basis of the Purchase  Price in effect prior
to such  adjustment;  provided,  however,  that the Trust shall  deliver to such
holder a due bill or other appropriate instrument evidencing such holder's right
to receive such additional securities upon the occurrence of the event requiring
such adjustment.

         (m) Anything in this Section 11 to the  contrary  notwithstanding,  the
Trust  shall be entitled  to make such  reductions  in the  Purchase  Price,  in
addition to those adjustments  expressly  required by this Section 11, as and to
the extent that it, by means of a resolution  of the Board acting in good faith,
shall determine to be advisable in order that any  consolidation  or subdivision
of the Common Stock,  issuance  wholly for cash of any Common Stock at less than
the Current Market Price thereof,  issuance  wholly for cash of Common Stock (or
other  securities  which by their terms are convertible into or exchangeable for
Common  Stock),  dividends  payable in shares of Common  Stock or other  capital

<PAGE>

stock or shares of  beneficial  interest,  or  issuance of rights,  options,  or
warrants  referred to hereinabove in this Section 11, hereafter made or declared
by the Trust to the  holders of its Common  Stock,  shall not be taxable to such
holders.

         (n) The Trust covenants and agrees that it shall not, at any time after
the  Distribution  Date,  (i)  consolidate  with any other Person  (other than a
Subsidiary  of the Trust in a  transaction  that  complies  with  Section  11(o)
hereof),  (ii) merge with or into any other Person  (other than a Subsidiary  of
the Trust in a transaction  which complies with Section 11(o) hereof),  or (iii)
sell or  transfer  (or  permit  any  Subsidiary  to sell  or  transfer),  in one
transaction or a series of related transactions, more than 25% of (A) the assets
(taken at net asset value as stated on the books of the Trust and  determined on
a consolidated basis in accordance with generally accepted accounting principles
consistently applied) or (B) the earning power of the Trust and its Subsidiaries
(determined  on a  consolidated  basis in  accordance  with  generally  accepted
accounting  principles  consistently  applied)  to any other  Person or  Persons
(other  than the Trust or any of its  Subsidiaries  in one or more  transactions
each of which  complies  with Section  11(o)  hereof),  if (x) at the time of or
immediately  after such  consolidation,  merger or sale,  there are any  rights,
warrants or other instruments or securities  outstanding or agreements  (whether
or not in  writing)  in effect that would  substantially  diminish or  otherwise
eliminate  the  benefits  intended to be afforded by the Rights or (y) prior to,
simultaneously with or immediately after such consolidation, merger or sale, the
shareholders  of such other Person shall have received a distribution  of Rights
previously owned by such Person or any of its Affiliates.

         (o) The Trust covenants and agrees that, after the  Distribution  Date,
it will not, except as permitted by Section 23 or 27 hereof, take (or permit any
Subsidiary  to take)  any  action  if at the  time  such  action  is taken it is
reasonably foreseeable that such action will diminish substantially or otherwise
eliminate the benefits intended to be afforded by the Rights.

         (p) Anything in this Agreement to the contrary notwithstanding,  in the
event that the Trust shall at any time after the Dividend  Declaration  Date and
prior to the Distribution  Date (i) declare or pay a dividend on the outstanding
shares of Common  Stock  payable  in shares of Common  Stock,  or (ii)  effect a
subdivision,  combination or consolidation  of the outstanding  Common Stock (by
reclassification  or otherwise  than by payment of dividends in shares of Common
Stock) into a greater or smaller  number of shares,  then in any such case,  (i)
the number of shares of Common  Stock  purchasable  after such event upon proper
exercise of each Right shall be determined by  multiplying  the number of shares
of Common Stock so purchasable immediately prior to such event by a fraction the
numerator  of which  shall  be the  total  number  of  shares  of  Common  Stock
outstanding immediately prior to the occurrence of the event and the denominator
of which  shall be the  total  number of  shares  of  Common  Stock  outstanding
immediately  following  the  occurrence  of such  event;  and (ii) each share of
Common  Stock  outstanding  immediately  after such event shall have issued with
respect to it that number of Rights which each share of Common Stock outstanding
immediately  prior to such event had issued with respect to it. The  adjustments
provided for in this Section  11(p) shall be made  successively  whenever such a
dividend is declared or paid or such a subdivision, combination or consolidation
is effected.

<PAGE>


Section 12.  Certificate of Adjustments. 

         Whenever an  adjustment is made as provided in Section 11 or 13 hereof,
the Trust shall (a) promptly prepare an Officers' Certificate setting forth such
adjustment,  including any adjustment in Purchase Price, the number of shares or
Other Consideration  payable,  and a brief statement of the facts accounting for
such adjustment,  (b) promptly file with the Rights Agent and with each transfer
agent for the Common Stock a copy of such Officers' Certificate,  and (c) mail a
brief  summary  thereof to each  registered  holder of a Rights  Certificate  in
accordance with Section 26 hereof.  The Rights Agent shall be fully protected in
relying  on  any  such  Officers'  Certificate  and on  any  adjustment  therein
contained,  and shall not be deemed  to have  knowledge  of any such  adjustment
unless and until it shall have received such an Officers' Certificate.

Section 13.  Consolidation, Merger or Sale or Transfer of Assets or Earning
             Power.

         In the event that,  following the Stock Acquisition  Date,  directly or
indirectly,  (a) the Trust shall  consolidate  with, or merge with and into, any
other  Person  (other  than a  Subsidiary  of the  Trust in a  transaction  that
complies with Section 11(o) hereof) and the Trust shall not be the continuing or
surviving Person of such  consolidation or merger,  (b) any Person (other than a
Subsidiary  of the Trust in a  transaction  that  complies  with  Section  11(o)
hereof) shall  consolidate  with, or merge with and into,  the Trust,  the Trust
shall be the continuing or surviving Person of such consolidation or merger and,
in connection with such consolidation or merger, all or part of the Common Stock
of the Trust shall be changed or otherwise  transformed  into or  exchanged  for
shares of  beneficial  interest or other stock or other  securities of any other
Person or the Trust or cash or any other  property,  or (c) the Trust shall sell
or  otherwise  transfer  (or  one or  more  of its  Subsidiaries  shall  sell or
otherwise  transfer),  in one  transaction or a series of related  transactions,
more than 25% of (A) the assets (taken at net asset value as stated on the books
of the Trust and determined on a consolidated basis in accordance with generally
accepted accounting principles consistently applied) or (B) the earning power of
the Trust and its Subsidiaries (determined on a consolidated basis in accordance
with  generally  accepted  accounting  principles  consistently  applied) to any
Person  (other  than the  Trust or any  Subsidiary  of the  Trust in one or more
transactions  each of which  complies with Section 11(o) hereof) then,  from and
after such event,  proper  provision  shall be made so that (i) each holder of a
Right,  except as provided in Section 7(e)  hereof,  shall  thereafter  have the
right to receive,  upon the exercise  thereof at the Purchase Price in effect at
the time of such exercise in accordance with the terms of this  Agreement,  such
number of whole or fractional  shares of validly  authorized  and issued,  fully
paid, non-assessable, and freely tradeable Common Stock of such other Person (or
in the case of a transaction or series of  transactions  described in clause (c)
above,  the Person  receiving the greatest amount of the assets or earning power
of the  Trust,  or if the Common  Stock of such other  Person is not and has not
been  continuously  registered  under  Section  12 of the  Exchange  Act for the

<PAGE>

preceding 12-month period and such Person is a direct or indirect  Subsidiary of
another  Person,  that  other  Person,  or if such  other  Person is a direct or
indirect  Subsidiary of more than one other  Person,  the Common Stock of two or
more of  which  are and  have  been  so  registered,  such  other  Person  whose
outstanding  Common Stock has the greatest  aggregate value),  free and clear of
any liens,  encumbrances,  rights of first refusal,  or other adverse claims, as
shall be equal to the result  obtained by (x)  multiplying the Purchase Price in
effect  immediately  prior to the first  occurrence  of any Common  Stock  Event
described in this Section 13 by the number of shares of Common Stock for which a
Right is exercisable  immediately  prior to such first  occurrence  (and without
taking into account any prior  adjustment  made pursuant to  11(a)(ii))  and (y)
dividing  that product by 50% of the Current  Market Price per share (as defined
in Section 11(d) hereof) of the Common Stock of such other Person  determined as
of the date of consummation of such  consolidation,  merger,  sale, or transfer;
(ii) the issuer of such Common Stock shall  thereafter  be liable for, and shall
assume,  by virtue of such  consolidation,  merger,  sale, or transfer,  all the
obligations and duties of the Trust pursuant to this  Agreement;  (iii) the term
"Trust" shall thereafter be deemed, for all purposes of this Agreement, to refer
to such issuer, it being specifically intended that the provisions of Section 11
hereof  (other than Section  11(a)(ii)  hereof)  shall apply only to such issuer
following the first occurrence of a Common Stock Event described in this Section
13; (iv) such issuer shall take such steps  (including,  but not limited to, the
reservation of a sufficient  number of shares of its Common Stock) in connection
with such  consummation as may be necessary to assure that the provisions hereof
shall  thereafter be applicable,  as nearly as reasonably may be, in relation to
the whole or fractional  shares of its Common Stock thereafter  deliverable upon
the exercise of the Rights;  and (v) the provisions of Section  11(a)(ii) hereof
shall be of no effect  following the first  occurrence of any Common Stock Event
described  in clauses  (a),  (b) or (c) of this  Section 13. The Trust shall not
consummate  any such  consolidation,  merger,  sale or transfer  unless (i) such
issuer shall have a sufficient  number of authorized  shares of its Common Stock
which have not been issued or reserved  for issuance as will permit the exercise
in full of the Rights in accordance with this Section 13, and (ii) prior thereto
the Trust and such issuer shall have  executed and delivered to the Rights Agent
a  supplemental  agreement so providing  and further  providing  that as soon as
practicable  after the date of any Common  Stock Event  described  above in this
Section 13 such issuer shall (A) prepare and file a registration statement under
the Act, with respect to the Rights and the securities purchasable upon exercise
of the Rights on an  appropriate  form,  and will use its best  efforts to cause
such registration statement to (I) become effective as soon as practicable after
such filing and (II) remain  effective  (with a prospectus  at all times meeting
the  requirements of the Act) until the Expiration Date, and (B) will deliver to
holders of the Rights historical financial statements of such issuer and each of
its  Affiliates   which  comply  in  all  respects  with  the  requirements  for
registration on Form 10 under the Exchange Act. Furthermore,  in case the Person
which is to be party to a  transaction  referred  to in this  Section 13 has any
provision in any of its  authorized  securities  or in its charter or by-laws or
other agreement or instrument governing its affairs,  which provision would have
the  effect of  causing  such  Person  to issue,  in  connection  with,  or as a
consequence  of, the  consummation  of a Common Stock Event described in clauses
(a), (b), or (c) of this Section 13, whole or fractional  shares of Common Stock
of such Person at less than the then Current  Market Price per share thereof (as
defined in Section 11(d) hereof),  or to issue  securities  exercisable  for, or
convertible  into,  Common  Stock of such Person at less than such then  Current

<PAGE>

Market Price,  then, in such event,  the Trust hereby agrees with each holder of
the  Rights  that it shall not  consummate  any such  transaction  unless  prior
thereto the Trust and such  Person  shall have  executed  and  delivered  to the
Rights Agent a supplemental  agreement providing that such provision in question
shall have been canceled,  waived,  or amended so that it will have no effect in
connection  with,  or as a  consequence  of, the  consummation  of the  proposed
transaction.  The  provisions  of this  Section  13  shall  similarly  apply  to
successive  mergers or consolidations or sales or other transfers.  In the event
that a Common  Stock Event  described in this Section 13 shall occur at any time
after the  occurrence  of a Common Stock Event  described  in Section  11(a)(ii)
hereof,  the Rights which have not theretofore  been exercised shall  thereafter
become  exercisable,  except as provided in Section 7(e)  hereof,  in the manner
described in this Section 13.

Section 14.  Fractional Rights and Fractional Shares.

         (a) The Trust shall not be required to issue  fractions of Rights or to
distribute  fractions  of  Rights,  except  prior  to the  Distribution  Date as
provided in Section 11(i) hereof,  or to distribute  Rights  Certificates  which
evidence  fractional  Rights. In lieu of issuing such fractional  Rights, at the
election  of the Trust,  there  shall be paid to the  registered  holders of the
Rights with regard to which such fractional  Rights would otherwise be issuable,
an amount in cash equal to the same  fraction of the current  market  value of a
whole Right. For the purposes of this Section 14(a), the current market value of
a whole  Right  shall be the  Closing  Price of the Rights for the  Trading  Day
immediately  prior to the date on which such  fractional  Rights would have been
otherwise issuable.

         (b) The Trust shall not be required to issue fractions of shares of its
beneficial  interest or other  capital  stock upon  exercise of the Rights or to
distribute  certificates which evidence fractional shares. In lieu of fractional
shares,  at the  election of the Trust,  there  shall be paid to the  registered
holders of Rights at the time such Rights are  exercised  as herein  provided an
amount in cash equal to the same fraction of the current market value of a share
of such beneficial interest or other capital stock. For purposes of this Section
14(b),  the current  market value of a share of such capital  stock shall be the
Closing Price of such capital stock for the Trading Day immediately prior to the
date of such exercise.

         (c) The holder of a Right,  by the  acceptance of the Right,  expressly
waives  such  holder's  right to  receive  any  fractional  Rights or (except as
provided in Section 14(b) hereof) any fractional share upon exercise of a Right.

Section 15.  Rights of Action.

         Excepting  the rights of action given the Rights Agent under Section 18
hereof and except as set forth in Section 20(l) hereof,  all rights of action in
respect of this Agreement are vested in the registered holder of each Right; and
any registered  holder of any Right,  without the consent of the Rights Agent or
of the  holder  of any  other  Right,  may,  in its own  behalf  and for its own

<PAGE>

benefit, enforce, and may institute and maintain any suit, action, or proceeding
against the Trust to enforce,  or otherwise  act in respect of, such  registered
holder's  right to  exercise  the rights  evidenced  by such Right in the manner
provided in such Rights Certificate and in this Agreement,  and the Trust hereby
agrees  to  reimburse  such  registered  holder  for  all  expenses   (including
reasonable  attorneys'  fees) incurred by such  registered  holder in connection
therewith.  Without  limiting the  foregoing  or any  remedies  available to the
holders of Rights,  it is specifically  acknowledged  that the holders of Rights
would  not have an  adequate  remedy at law for any  breach  of the  obligations
hereunder,  and  shall be  entitled  to  injunctive  relief  against  actual  or
threatened violations of the obligations hereunder of any Person subject to this
Agreement.

Section 16.  Agreement of Rights Holders.

         Every holder of a Right by accepting  the same consents and agrees with
the Trust and the Rights Agent and with every other holder of a Right that:

         (a)      prior to the Distribution Date, the Rights will be 
transferable only in connection with the transfer of Common Stock;

         (b) from and after the Distribution  Date, the Rights  Certificates are
transferable  only on the registry  books of the Rights Agent if  surrendered at
the principal  office of the Rights Agent,  duly  endorsed or  accompanied  by a
proper  instrument  of transfer with a form of assignment  and  certificate  set
forth on the reverse  side  thereof duly  executed,  accompanied  by a signature
guarantee  and such  other  documentation  as the  Rights  Agent may  reasonably
request;

         (c) subject to Sections 6(a) and 7(f) hereof,  the Trust and the Rights
Agent may deem and treat the  person  in whose  name a Rights  Certificate  (or,
prior to the  Distribution  Date, the associated  Common Stock  certificate)  is
registered  as the absolute  owner thereof and of the Rights  evidenced  thereby
(notwithstanding any notations of ownership or writing on the Rights Certificate
or, prior to the  Distribution  Date, the associated  Common Stock  certificate,
made by  anyone  other  than the Trust or the  Rights  Agent)  for all  purposes
whatsoever,  and neither the Trust nor the Rights Agent shall be affected by any
notice to the contrary; and

         (d) notwithstanding anything in this Agreement to the contrary, neither
the Trust nor the Rights Agent shall have any liability to any holder of a Right
or other Person as a result of its  inability to perform any of its  obligations
under this  Agreement by reason of any  preliminary  or permanent  injunction or
other order, decree or ruling issued by a court of competent  jurisdiction or by
a  governmental,  regulatory  or  administrative  agency or  commission,  or any
statute,  rule,  regulation  or executive  order  promulgated  or enacted by any
governmental authority prohibiting or otherwise restraining  performance of such
obligation;  provided, however, the Trust agrees to use its best efforts to have
any such  order,  decree or ruling  lifted or  otherwise  overturned  as soon as
possible.

<PAGE>


Section 17.  Rights Certificate Holder Not Deemed a Shareholder.

         No holder,  as such,  of any Rights  Certificate  shall be  entitled to
vote,  receive  dividends,  or otherwise be deemed for any purpose the holder of
any  securities of the Trust which may be issuable on the exercise of the Rights
represented  thereby,  nor shall  anything  contained  herein  or in any  Rights
Certificate be construed to confer upon the holder of any Rights Certificate, as
such,  any of the rights of a  shareholder  of the Trust or any right to vote in
the  election of trustees or upon any matter  submitted to  shareholders  at any
meeting  thereof,  or to give or withhold consent to any action by the Trust, or
to receive notice of meetings or other actions affecting shareholders (except as
provided in Section 25 hereof), or to receive dividends or preemptive rights, or
otherwise, until the time specified in Section 10 hereof.

Section 18.  Concerning the Rights Agent.

         The  Trust  agrees  to  pay  to  the  Rights   Agent  such   reasonable
compensation  as shall be agreed to in writing  between the Trust and the Rights
Agent for all  services  rendered by it  hereunder  and,  from time to time,  on
demand of the  Rights  Agent,  its  reasonable  expenses  and  counsel  fees and
disbursements  and  other  disbursements  incurred  in  the  administration  and
execution  of this  Agreement  and the exercise  and  performance  of its duties
hereunder.  The Trust also agrees to indemnify the Rights Agent for, and to hold
it harmless against, any and all loss,  liability,  damages,  claims or expense,
incurred without gross negligence,  bad faith or willful  misconduct on the part
of the Rights  Agent,  for  anything  done or  omitted  by the  Rights  Agent in
connection with the acceptance and  administration of this Agreement,  including
the costs and expenses  (including  reasonable  attorneys' fees and expenses) of
defending against any claim of liability for any of the foregoing.

         The Rights Agent shall be protected and shall incur no liability for or
in respect of any action taken,  suffered,  or omitted by it in connection  with
its  administration of this Agreement in reliance upon any Rights Certificate or
certificate for any number of shares of Common Stock or for other  securities of
the Trust, instrument of assignment or transfer, power of attorney, endorsement,
affidavit,  letter,  notice,  instruction,   direction,   consent,  certificate,
statement,  or other  paper or  document  believed by it to be genuine and to be
signed  and  executed  by  the  proper  Person  or  Persons,   and  verified  or
acknowledged as required by this Agreement.

Section 19.  Merger or Consolidation or Change of Name of Rights Agent.

         Any corporation into which the Rights Agent may be merged or with which
it  may be  consolidated,  or any  corporation  resulting  from  any  merger  or
consolidation  to which the Rights  Agent shall be a party,  or any  corporation
succeeding to the shareholder  services  business of the Rights Agent,  shall be
the successor to the Rights Agent under this Agreement  without the execution or
filing of any paper or any further act on the part of any of the parties hereto,
provided, that such corporation would be eligible for appointment as a successor
Rights Agent under the provisions of Section 21 hereof. In case at the time such
successor Rights Agent shall succeed to the agency created by this Agreement and
any of the Rights  Certificates shall have been countersigned but not delivered,
any  such  successor  Rights  Agent  may  adopt  the   countersignature  of  the
predecessor Rights Agent and deliver such Rights  Certificates so countersigned;
and in case at that  time any of the  Rights  Certificates  shall  not have been
countersigned,   any  successor   Rights  Agent  may  countersign   such  Rights
Certificates  either in the name of the predecessor  Rights Agent or in the name
of the successor  Rights Agent;  and in all such cases such Rights  Certificates
shall  have the full  force  provided  in the  Rights  Certificates  and in this
Agreement.
         In case at any time the name of the Rights  Agent  shall be changed and
at such time any of the Rights  Certificates  shall have been  countersigned but
not delivered,  the Rights Agent may adopt the countersignature  under its prior
name and deliver such Rights Certificates so countersigned;  and in case at that
time any of the  Rights  Certificates  shall  not have been  countersigned,  the
Rights Agent may countersign such Rights  Certificates  either in its prior name
or in its changed  name;  and in all such cases such Rights  Certificates  shall
have the full force provided in the Rights Certificates and in this Agreement.

Section 20.  Duties of Rights Agent.

         The Rights Agent  undertakes only the duties and obligations  expressly
imposed upon it by this Agreement and no implied duties or obligations  shall be
read into this  Agreement  against  the Rights  Agent.  The Rights  Agent  shall
perform  its duties  and  obligations  hereunder  upon the  following  terms and
conditions:

         (a) The Rights  Agent may consult with legal  counsel of its  selection
(who may be legal  counsel to the Trust),  and the opinion of such counsel shall
be full and complete  authorization and protection to the Rights Agent as to any
action taken or omitted by it in good faith and in accordance with such opinion.

         (b) Whenever in the  performance of its duties under this Agreement the
Rights  Agent  shall  deem it  necessary  or  desirable  that any fact or matter
(including,  without limitation, the identity of any Acquiring Person) be proved
or established  by the Trust prior to taking or suffering any action  hereunder,
such  fact or  matter  (unless  other  evidence  in  respect  thereof  be herein
specifically prescribed) may be deemed to be conclusively proved and established
by a certificate (an "Officers' Certificate") signed by a person believed by the
Rights Agent to be the  President or any Vice  President and by the Treasurer or
any Assistant Treasurer or the Secretary or any Assistant Secretary of the Trust
and delivered to the Rights Agent; and such Officers'  Certificate shall be full
authorization to the Rights Agent for any action taken or suffered in good faith
by it under the  provisions of this  Agreement in reliance  upon such  Officers'
Certificate.

         (c)      The Rights Agent shall be liable hereunder only for its own
gross negligence, bad faith, or willful misconduct.


<PAGE>

         (d) The Rights Agent shall not be liable for or by reason of any of the
statements  of fact or recitals  contained  in this  Agreement  or in the Rights
Certificates  (except its  countersignature  on such Rights  Certificate)  or be
required to verify the same, but all such  statements and recitals are and shall
be deemed to have been made by the Trust only.

         (e) The Rights Agent shall not be under any  responsibility  in respect
of the validity of this  Agreement or the execution and delivery  hereof (except
the due  execution  hereof by the Rights Agent) or in respect of the validity or
execution of any Rights Certificate (except its countersignature  thereof);  nor
shall it be responsible for any breach by the Trust of any covenant or condition
contained  in this  Agreement  or in any  Rights  Certificate;  nor  shall it be
responsible  for any adjustment  required under the provisions of Sections 11 or
13  hereof  or be  responsible  for the  manner,  method  or  amount of any such
adjustment  or  procedures  or the  ascertaining  of the existence of facts that
would  require any such  adjustment  or  procedure  (except  with respect to the
exercise  of  Rights  evidenced  by  Rights  Certificates  after  receipt  of  a
certificate  delivered  pursuant  to  Section  12  hereof,  describing  any such
adjustment or  procedures);  nor shall it by any act hereunder be deemed to make
any  representation  or warranty as to the  authorization  or reservation of any
Common Stock or other  securities to be issued pursuant to this Agreement or any
Rights Certificate or as to whether any shares of Common Stock, or any shares or
similar units of other securities,  will, when issued, be validly authorized and
issued, fully paid, and nonassessable.

         (f) The Trust agrees that it will  perform,  execute,  acknowledge  and
deliver,  or cause to be performed,  executed,  acknowledged and delivered,  all
such further and other acts,  instruments  and  assurances as may  reasonably be
required by the Rights Agent for the carrying  out or  performing  by the Rights
Agent of the provisions of this Agreement.

         (g) The  Rights  Agent is  hereby  authorized  and  directed  to accept
instructions  with respect to the  performance of its duties  hereunder from any
person believed by the Rights Agent to be the President or any Vice President or
the  Secretary  or any  Assistant  Secretary or the  Treasurer or any  Assistant
Treasurer of the Trust, and to apply to such officers for advice or instructions
in connection  with its duties,  and it shall not be liable for any action taken
or suffered to be taken by it in good faith in accordance  with  instructions of
any such officer.  Any application by the Rights Agent for written  instructions
from the Trust may, at the option of the Rights Agent,  set forth in writing any
action  proposed to be taken or omitted by the Rights  Agent with respect to its
duties or  obligations  under this  Agreement and the date on and/or after which
such action  shall be taken or omitted and the Rights  Agent shall not be liable
for any action taken or omitted in  accordance  with a proposal  included in any
such application on or after the date specified therein (which date shall not be
less than three Business Days after the date any such officer actually  receives
such application,  unless any such officer shall have consented in writing to an
earlier  date) unless,  prior to taking or omitting any such action,  the Rights
Agent has  received  written  instructions  from the Trust in  response  to such
application specifying the action to be taken or omitted.

<PAGE>


         (h)  The  Rights  Agent  and any  shareholder,  director,  officer,  or
employee  of the  Rights  Agent may buy,  sell,  or deal in any of the Rights or
other  securities  of  the  Trust  or  become  pecuniarily   interested  in  any
transaction in which the Trust may be interested, or contract with or lend money
to the Trust or  otherwise  act as fully and freely as though it were not Rights
Agent under this Agreement.  Nothing herein shall preclude the Rights Agent from
acting in any other capacity for the Trust or for any other entity.

         (i) The Rights  Agent may  execute  and  exercise  any of the rights or
powers hereby vested in it or perform any duty hereunder  either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, default, neglect or misconduct of any such attorneys or
agents  or for any loss to the  Trust  resulting  from any  such  act,  default,
neglect or misconduct;  provided, however, that reasonable care was exercised in
the selection and continued employment thereof.

         (j) No provision of this  Agreement  shall  require the Rights Agent 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 its rights if
there shall be reasonable  grounds for believing that repayment of such funds or
adequate  indemnification  against  such  risk or  liability  is not  reasonably
assured to it.

         (k) If,  with  respect to any  Rights  Certificate  surrendered  to the
Rights  Agent for  exercise or  transfer,  the  certification  appearing  on the
reverse side thereof  following  the form of election to purchase has either not
been  completed  or  indicates  an  affirmative  response  to  clause 1 and/or 2
thereof, the Rights Agent shall not take any further action with respect to such
requested exercise of transfer without first consulting with the Trust.

         (l) The provisions of this Section 20 are solely for the benefit of the
Rights  Agent or the Trust and any  failure or  omission  under this  Section 20
shall not affect the rights of the Trust  under this  Agreement  and neither the
Rights  Agent nor the Trust shall have any  liability to any holder of Rights or
other Person on account of such failure or omission.

Section 21.  Change of Rights Agent.

         The  Rights  Agent or any  successor  Rights  Agent may  resign  and be
discharged  from its duties under this Agreement upon 30 days' notice in writing
mailed to the Trust and to each transfer agent of the Common Stock by registered
or certified mail, and,  subsequent to the Distribution  Date, to the holders of
the Rights  Certificates  by  first-class  mail. The Trust may remove the Rights
Agent or any successor  Rights Agent upon 30 days' notice in writing,  mailed to
the Rights Agent,  to each  transfer  agent of the Common Stock by registered or
certified mail, and,  subsequent to the Distribution Date, to the holders of the
Rights  Certificates by first-class mail. If the Rights Agent shall resign or be
removed or shall otherwise become incapable of acting, the Trust shall appoint a
successor to the Rights Agent. If the Trust shall fail to make such  appointment
within a period of 30 days after  giving  notice of such removal or after it has
been notified in writing of such  resignation  or incapacity by the resigning or
incapacitated  Rights Agent or by the holder of a Rights Certificate (who shall,

<PAGE>

with such notice,  submit such holder's Rights Certificate for inspection by the
Trust),  then the registered  holder of any Rights  Certificate may apply to any
court of competent  jurisdiction  for the appointment of a new Rights Agent. Any
successor Rights Agent, whether appointed by the Trust or by such a court, shall
be a  corporation  organized  and doing  business  under the laws of the  United
States,  the State of New York or The Commonwealth of  Massachusetts  (or of any
other State of the United States so long as such corporation is authorized to do
business as a banking  institution in the State of New York or The  Commonwealth
of  Massachusetts),  in good  standing,  having  an office  designated  for such
purpose in the State of New York or The Commonwealth of Massachusetts,  which is
authorized  under such laws to exercise  corporate  trust and/or stock  transfer
powers  and is  subject  to  supervision  or  examination  by  federal  or state
authority and which has at the time of its  appointment as Rights Agent combined
capital and surplus of at least $50,000,000.  After  appointment,  the successor
Rights  Agent  shall  be  vested  with  the  same  powers,  rights,  duties  and
responsibilities  as if it had been  originally  named as Rights  Agent  without
further act or deed; but the predecessor Rights Agent shall deliver and transfer
to the successor Rights Agent any property at the time held by it hereunder, and
execute and deliver any further assurance, conveyance, act or deed necessary for
the  purpose;  and,  except  as the  context  herein  otherwise  requires,  such
successor Rights Agent shall be deemed to be the "Rights Agent" for all purposes
of this Agreement. Not later than the effective date of any such appointment the
Trust shall file notice thereof in writing with the predecessor Rights Agent and
each transfer agent of the Common Stock, and mail a notice thereof in writing to
the registered  holders of the Rights  Certificates.  Failure to give any notice
provided  for in this  Section 21,  however,  or any defect  therein,  shall not
affect the  legality  or validity  of the  resignation  or removal of the Rights
Agent or the appointment of the successor Rights Agent, as the case may be.

Section 22.  Issuance of New Rights Certificates.

         Notwithstanding  any of the  provisions  of  this  Agreement  or of the
Rights  to the  contrary,  the  Trust  may,  at its  option,  issue  new  Rights
Certificates  evidencing  Rights in such form as may be approved by the Board to
reflect any  adjustment or change in the Purchase Price per share and the number
or kind or  class of  shares  of  beneficial  interest  or other  stock or other
securities  or  property  purchasable  under  the  Rights  Certificates  made in
accordance  with the provisions of this  Agreement.  In addition,  in connection
with the issuance or sale by the Trust of shares of Common Stock  following  the
Distribution  Date and prior to the redemption or expiration of the Rights,  the
Trust (a)  shall,  with  respect  to  shares  of Common  Stock so issued or sold
pursuant  to the  exercise  of stock  options  or  under  any  employee  plan or
arrangement,  or  upon  the  exercise,  conversion  or  exchange  of  securities
hereinafter  issued by the  Trust,  and (b) may,  in any other  case,  if deemed
necessary or appropriate by the Board,  issue Rights  Certificates  representing
the  appropriate  number of Rights in  connection  with such  issuance  or sale;
provided,  however,  that (i) no such Rights  evidenced by a Rights  Certificate
shall be issued  if,  and to the  extent  that,  the Trust  shall be  advised by
counsel that such issuance would create a significant  risk of material  adverse
tax consequences to the Trust or the Person to whom such Rights would be issued,
and (ii) no such Rights  Certificate shall be issued if, and to the extent that,
appropriate  adjustment  shall  otherwise have been made in lieu of the issuance
thereof.

<PAGE>


Section 23.  Redemption and Termination. 

         The Trust may,  at its  option,  upon the  affirmative  vote or written
consent  of not less than a majority  of the Board  then in office,  at any time
prior to the earlier of (i) the Distribution  Date or (ii) the Close of Business
on the  Expiration  Date,  redeem  all  (but  not  less  than  all) of the  then
outstanding  Rights  at a  redemption  price  of $.01 per  Right,  appropriately
adjusted to reflect any stock split,  stock dividend,  combination of shares, or
similar transaction occurring after the date hereof (such redemption price being
hereinafter  referred  to as the  "Redemption  Price").  The Trust  may,  at its
option,  pay the Redemption Price in cash,  shares of Common Stock (based on the
Current Market Price of the Common Stock at the time of redemption) or any other
form of  consideration  deemed  appropriate by the majority of the Board then in
office.  Immediately  upon the taking of such action  ordering the redemption of
all of the  Rights,  evidence  of which  shall  have been  filed with the Rights
Agent,  and  without any  further  action and  without any notice,  the right to
exercise the Rights so redeemed will terminate and the only right  thereafter of
the holders of such Rights so redeemed shall be to receive the Redemption  Price
(without the payment of any interest thereon).  Within 10 days after such action
ordering  the  redemption  of all of the Rights,  the Trust shall give notice of
such  redemption to the holders of the then  outstanding  Rights by mailing such
notice to all such  holders  at their last  addresses  as they  appear  upon the
registry  books of the Rights Agent or, prior to the  Distribution  Date, on the
registry books of each transfer agent for the Common Stock.  Any notice which is
mailed in the manner herein  provided shall be deemed given,  whether or not the
holder  receives  the  notice.  Each such notice of  redemption  shall state the
method by which the payment of the Redemption Price shall be made.

Section 24.  Exchange.

         (a) The Board, by majority vote of the Trustees then in office, may, at
its option, at any time after any Person becomes an Acquiring  Person,  exchange
all or part of the then outstanding and exercisable  Rights for shares of Common
Stock at an exchange ratio of one share of Common Stock per Right, appropriately
adjusted  to reflect any stock  split,  stock  dividend  or similar  transaction
occurring  after  the  date  hereof  (such  exchange  ratio,  as the same may be
adjusted  from time to time,  being  hereinafter  referred  to as the  "Exchange
Ratio").  Notwithstanding  the  foregoing,  the Board shall not be  empowered to
effect  such  exchange  at any time after any Person  (other than (i) the Trust,
(ii) any Subsidiary of the Trust,  (iii) any employee  benefit plan of the Trust
or any such Subsidiary,  or (iv) any entity holding Common Stock for or pursuant
to the terms of any such plan),  together  with all  Affiliates  of such Person,
becomes  the  Beneficial  Owner  of  50%  or  more  of  the  Common  Stock  then
outstanding.

         (b)  Immediately  upon the action of the Board ordering the exchange of
any Rights pursuant to subsection (a) of this Section 24 and without any further
action and without any notice, the right to exercise such Rights shall terminate
and the only right  thereafter  of a holder of such  Rights  shall be to receive
that number of shares of Common Stock equal to the number of such Rights held by
such holder  multiplied  by the Exchange  Ratio.  The Trust shall  promptly give

<PAGE>

public notice of any such exchange; provided, however, that the failure to give,
or any defect in, such notice  shall not affect the  validity of such  exchange.
The  Trust  promptly  shall  mail a notice  of any such  exchange  to all of the
holders of such Rights at their last  addresses as they appear upon the registry
books of the  Rights  Agent.  Any notice  which is mailed in the  manner  herein
provided shall be deemed given,  whether or not the holder  receives the notice.
Each such notice of exchange shall state the method by which the exchange of the
Common  Stock for Rights  shall be  effected  and,  in the event of any  partial
exchange,  the number of Rights which will be  exchanged.  Any partial  exchange
shall be  effected  pro rata based on the number of Rights  (other  than  Rights
which have become void  pursuant to the  provisions of Section 7(e) hereof) held
by each holder of Rights.

         (c) In the event that there  shall not be  sufficient  shares of Common
Stock  issued but not  outstanding  or  authorized  but  unissued  to permit any
exchange of Rights as contemplated in accordance with this Section 24, the Trust
shall take all such action as may be necessary to  authorize  additional  Common
Stock for issuance upon exchange of the Rights.

         (d) The Trust  shall not be required  to issue  fractions  of shares of
Common Stock or to distribute  certificates which evidence  fractional shares of
Common Stock. In lieu of such fractional shares of Common Stock, the Trust shall
pay to each  registered  holder of a Right  Certificate  with  regard to which a
fractional  share of Common Stock would  otherwise be issuable an amount in cash
equal to the same  fraction  of the  current  market  value of a whole  share of
Common Stock.  For the purposes of this  paragraph (d), the current market value
of a whole share of Common Stock shall be the Closing Price of a share of Common
Stock (as  determined  pursuant  to Section  11(d)  hereof)  for the Trading Day
immediately prior to the date of exchange pursuant to this Section 24.

Section 25.  Notice of Proposed Actions.

         In case the Trust shall after the Distribution  Date propose (a) to pay
any  dividend  payable in shares of  beneficial  interest  or other stock of any
class to the holders of its Common  Stock or to make any other  distribution  to
the holders of its Common Stock  (other than a cash  dividend out of earnings or
the  retained  earnings  of the  Trust),  or (b) to offer to the  holders of its
Common Stock rights or warrants to subscribe  for or to purchase any  additional
shares  of  Common  Stock or  shares  of stock of any  other  class or any other
securities,  rights, or options,  or (c) to effect any  reclassification  of the
Common Stock (other than a  reclassification  involving only the  subdivision of
outstanding  shares of Common  Stock),  or (d) to effect  any  consolidation  or
merger into or with,  or to effect any sale or other  transfer (or to permit one
or more of its  Subsidiaries  to  effect  any  sale or other  transfer),  in one
transaction  or a series of  related  transactions,  of more than 25% of (i) the
assets of the Trust and its Subsidiaries  (taken at net asset value as stated on
the books of the Trust and determined on a consolidated basis in accordance with
generally  accepted  accounting  principles  consistently  applied)  or (ii) the
earning power of the Trust and its  Subsidiaries  (determined  on a consolidated
basis in accordance with generally accepted accounting  principles  consistently
applied)  to any other  Person or  Persons,  or (e) to effect  the  liquidation,

<PAGE>

dissolution or winding up of the Trust, then, in each such case, the Trust shall
give to the Rights Agent and each holder of a Right,  in accordance with Section
26 hereof, a notice of such proposed action, which shall specify the record date
for the purposes of such stock dividend,  distribution of rights or warrants, or
the date on which such reclassification,  consolidation, merger, sale, transfer,
liquidation,  dissolution,  or  winding  up is to take  place  and  the  date of
participation  therein by the holders of Common Stock, if any such date is to be
fixed,  and such notice  shall be so given in the case of any action  covered by
clause  (a) or (b)  above at least  twenty  days  prior to the  record  date for
determining  holders of the Common Stock for purposes of such action, and in the
case of any such other  action,  at least  twenty  days prior to the date of the
taking of such  proposed  action  or the date of  participation  therein  by the
holders of Common  Stock  whichever  shall be the  earlier.  The failure to give
notice  required by this Section 25 or any defect  therein  shall not affect the
legality or validity of the action  taken by the Trust or the vote upon any such
action.

         In case any Common Stock Event  described in Section  11(a)(ii)  hereof
shall  occur,  then,  in any such case,  the Trust shall as soon as  practicable
thereafter give to the Rights Agent and each holder of a Rights Certificate,  in
accordance  with Section 26 hereof,  a notice of the  occurrence  of such Common
Stock Event, which shall specify such event and the consequences of the event to
holders of Rights under Section 11(a)(ii) hereof.

         Notwithstanding  anything in this  Agreement to the contrary,  prior to
the  Distribution  Date a filing by the Trust with the  Securities  and Exchange
Commission  shall constitute  sufficient  notice to the holders of securities of
the Trust,  including  the Rights,  for purposes of this  Agreement and no other
notice need be given.

Notices.26.  Notices

         Notices or demands  authorized by this Agreement to be given or made by
the Rights Agent or by the holder of any Rights  Certificate  to the Trust shall
be  sufficiently  given or made if sent by first-class  mail,  postage  prepaid,
addressed  (until another  address is filed in writing with the Rights Agent) as
follows:

                  Eastern Enterprises
                  9 Riverside Road
                  Weston, MA  02193
                  Attn:  General Counsel

                  Copy to:          Ropes & Gray
                                    One International Place
                                    Boston, MA  02110-2624
                                    Attn: Truman S. Casner
         Subject to the  provisions of Sections 19 and 21 hereof,  any notice or
demand  authorized by this  Agreement to be given or made by the Trust or by the

<PAGE>

holder of any Rights Certificate to or on the Rights Agent shall be sufficiently
given or made if sent by first-class  mail,  postage  prepaid,  addressed (until
another address is filed in writing with the Trust) as follows:

                  BankBoston, N.A.
                  c/o Boston EquiServe, L.P.
                  150 Royall Street
                  Canton, MA 02021
                  Attn: Client Administration
                  (Eastern Enterprises Rights Agreement)

         Notices or demands  authorized by this Agreement to be given or made by
the Trust or the Rights Agent to the holder of any Rights  Certificate  shall be
sufficiently  given  or  made  if sent by  first-class  mail,  postage  prepaid,
addressed  to such holder at the address of such holder as shown on the registry
books of the Trust.

Section 27.  Supplements and Amendments.

         Prior to the Distribution  Date, the Trust, upon the vote of a majority
of the Board  then in  office,  may from time to time  supplement  or amend this
Agreement without the approval of any holders of the Rights.  From and after the
Distribution  Date, the Trust may, upon the vote of a majority of the Board then
in office,  from time to time amend this  Agreement  without the approval of any
holders  of the  Rights in order (i) to cure any  ambiguity,  (ii) to correct or
supplement any provision contained herein which may be defective or inconsistent
with any other  provisions  herein,  (iii) to change any time  period  governing
redemption  of the  Rights  or any other  time  period or (iv) to make any other
provisions in regard to matters or questions  arising hereunder which the Trust,
upon the vote of a majority of the Board then in office,  may deem  necessary or
desirable and which shall not  adversely  affect the interests of the holders of
the Rights (other than any Acquiring  Person or  Disqualified  Transferee or any
Affiliate of an Acquiring Person or Disqualified  Transferee).  The Rights Agent
shall join with the Trust in the execution  and delivery of any such  supplement
or amendment,  unless such  supplement  or amendment  affects any of the rights,
duties,  or obligations of the Rights Agent hereunder,  in which case the Rights
Agent may, but shall not be required to, join in such execution and delivery.

Section 28.  Successors. 

         All  the  covenants  and  provisions  of this  Agreement  by or for the
benefit of the Trust or the Rights  Agent shall bind and inure to the benefit of
their respective successors and assigns hereunder.

Section 29.  Determinations and Actions by the Board; etc.

         The Board shall have the  exclusive  power and  authority to administer
this Agreement and to exercise all rights and powers specifically granted to the

<PAGE>

Board,   or  to  the  Trust,  or  as  may  be  necessary  or  advisable  in  the
administration of this Agreement,  including,  without limitation, the right and
power to (i)  interpret  the  provisions  of this  Agreement  and (ii)  make all
determinations  deemed  necessary or advisable  for the  administration  of this
Agreement.  All such actions,  calculations,  interpretations and determinations
(including,  for purposes of clause (y) below all omissions  with respect to the
foregoing)  which  are  done or made by the  Board  in good  faith  and with the
concurrence  of a  majority  of the  Board  then in  office  shall (x) be final,
conclusive and binding on the Trust, the Rights Agent, the holders of the Rights
and all other  parties and (y) not subject any Trustee to any  liability  to the
holders of the Rights.

Section 30.  Benefits of this Agreement.

         Nothing  in this  Agreement  shall be  construed  to give to any Person
other than the Trust, the Rights Agent, and the registered holders of the Rights
Certificates  (and,  prior to the  Distribution  Date, the associated  shares of
Common  Stock)  any  legal or  equitable  right,  remedy,  or claim  under  this
Agreement or the Rights;  but this Agreement shall be for the sole and exclusive
benefit of the Trust, the Rights Agent, and the registered holders of the Rights
(and, prior to the Distribution Date, the associated Common Stock).

Section 31.  Severability.

         The  invalidity  or  unenforceability  of any term or provision  hereof
shall not affect the validity or  enforceability  of any other term or provision
hereof.  If any term,  provision,  covenant or  restriction of this Agreement is
held by a court of competent jurisdiction or other authority to be invalid, void
or  unenforceable,  the  remainder  of  the  terms,  provisions,  covenants  and
restrictions  of this Agreement  shall remain in full force and effect and shall
in no  way  be  affected,  impaired  or  invalidated;  provided,  however,  that
notwithstanding  anything in this  Agreement to the contrary,  if any such term,
provision,  covenant or  restriction  is held by such court or  authority  to be
invalid,  void or  unenforceable  and the  Board  determines  in its good  faith
judgment that severing the invalid  language from this Agreement would adversely
affect the  purpose or effect of this  Agreement,  the right of  redemption  set
forth in Section 23 hereof  shall be  reinstated  and shall not expire until the
Close of Business on the tenth day following the date of such  determination  by
the Board.

Section 32.  Governing Law.

         This Agreement and each Rights Certificate issued hereunder shall be
deemed to be a contract made under the laws of The Commonwealth of Massachusetts
and for all purposes shall be governed by and construed in accordance with the
laws of said Commonwealth applicable to contracts to be made and performed
entirely within said Commonwealth.

Section 33.  Counterparts.

         This Agreement may be executed in any number of  counterparts  and each
of such counterparts shall for all purposes be deemed to be an original, and all

<PAGE>

such counterparts shall together constitute but one and the same instrument.

Section 34.  Descriptive Headings.

         Descriptive  headings of the several  Sections  of this  Agreement  are
inserted  for  convenience  only and shall not  control or affect the meaning or
construction of any of the provisions hereof.

Section 35.  The Trust.

         Reference is hereby made to the declaration of trust  establishing  the
Trust dated July 18, 1929, as amended,  a copy of which is on file in the office
of the  Secretary  of  State  of The  Commonwealth  of  Massachusetts.  The name
"Eastern  Enterprises" refers to the trustees under such declaration as trustees
and not personally. No trustee, shareholder, officer or agent of the Trust shall
be held to any personal  liability in  connection  with the affairs of the Trust
and only the trust estate may be liable.


<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and set their  respective  hands and seals,  all as of the day and
year first above written.

                                            EASTERN ENTERPRISES


                                            By:     /s/ Jean A. Scholtens
                                                  -----------------------------
                                            Title: Vice President and Treasurer

Attest:



By:    /s/ L. William Law, Jr.
       -----------------------
Title: Secretary
                                            BANKBOSTON, N.A., AS RIGHTS AGENT



                                            By:  /s/ Margaret Prentice
                                                -------------------------
Attest:                                     Title: Administrative Manager


By:    /s/ Joshua McGinn
       -------------------
Title: Senior Account Manager


<PAGE>

                                                                    EXHIBIT A

                           FORM OF RIGHTS CERTIFICATE

Certificate No. R-                                             _______ Rights

         NOT  EXERCISABLE  AFTER JULY 22, 2008 OR EARLIER IF ORDER OF REDEMPTION
         IS GIVEN.  THE RIGHTS ARE SUBJECT TO  REDEMPTION,  AT THE OPTION OF THE
         TRUST,  AT  $.01  PER  RIGHT  ON THE  TERMS  SET  FORTH  IN THE  RIGHTS
         AGREEMENT. UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN
         ACQUIRING  PERSON  OR  AN  AFFILIATE  (WHICH  INCLUDES  AFFILIATES  AND
         ASSOCIATES) OF AN ACQUIRING PERSON (AS EACH SUCH TERM IS DEFINED IN THE
         RIGHTS  AGREEMENT) AND ANY SUBSEQUENT  HOLDER OF SUCH RIGHTS MAY BECOME
         NULL AND VOID. THE RIGHTS SHALL NOT BE  EXERCISABLE,  AND SHALL BE VOID
         SO LONG AS HELD,  BY A HOLDER IN ANY  JURISDICTION  WHERE THE REQUISITE
         QUALIFICATION  TO THE ISSUANCE TO SUCH HOLDER,  OR THE EXERCISE BY SUCH
         HOLDER, OF THE RIGHTS IN SUCH JURISDICTION SHALL NOT HAVE BEEN OBTAINED
         OR BE OBTAINABLE.  [THE RIGHTS  REPRESENTED BY THIS  CERTIFICATE ARE OR
         WERE  BENEFICIALLY  OWNED BY A PERSON  WHO WAS OR BECAME  AN  ACQUIRING
         PERSON OR AN AFFILIATE (WHICH INCLUDES AFFILIATES AND ASSOCIATES) OF AN
         ACQUIRING   PERSON  (AS  EACH  SUCH  TERM  IS  DEFINED  IN  THE  RIGHTS
         AGREEMENT).   ACCORDINGLY,  THIS  RIGHTS  CERTIFICATE  AND  THE  RIGHTS
         REPRESENTED  HEREBY  MAY  BECOME  NULL  AND  VOID IN THE  CIRCUMSTANCES
         SPECIFIED IN SECTION 7(e) OF THE RIGHTS AGREEMENT.]*

                               Rights Certificate

                              EASTERN ENTERPRISES



         This certifies that                         , or registered
assigns,  is the registered owner of the number of Rights set forth above,  each
of which  entitles  the owner  thereof,  subject to the terms,  provisions,  and
conditions  of the  Rights  Agreement  dated as of July 22,  1998  (the  "Rights
Agreement") between Eastern Enterprises (the "Trust"), and BankBoston, N.A. (the
"Rights  Agent"),  to purchase from the Trust at any time after the Distribution

<PAGE>

Date (as such term is defined in the  Rights  Agreement)  and prior to 5:00 p.m.
(Boston,  Massachusetts  time) on July 22, 2008 (the  "Expiration  Date") at the
office of the Rights Agent  designated  for such purpose,  or its  successors as
Rights Agent, one share of the Common Stock, with a par value of $1.00 per share
("Common Stock"),  of the Trust per each Right represented hereby, at a purchase
price of $160 per share (the "Purchase  Price") upon  presentation and surrender
of this Rights  Certificate  with the Form of Election to Purchase  set forth on
the reverse side hereof and the certificate contained therein duly completed and
executed,  accompanied by a signature  guarantee and such other documentation as
the Rights Agent may reasonably request.  The number of Rights evidenced by this
Rights  Certificate  (and the  number of  shares  which  may be  purchased  upon
exercise  thereof) set forth above,  and the Purchase  Price per share set forth
above, are the number and Purchase Price as of July 22, 1998 based on the shares
of Common Stock of the Trust as constituted at such date.

         As more fully set forth in the Rights Agreement, upon the occurrence of
a Common Stock Event (as such term is defined in the Rights  Agreement),  if the
Rights  evidenced by this Rights  Certificate are  beneficially  owned by (i) an
Acquiring  Person or an Affiliate  of an Acquiring  Person (as each such term is
defined in the Rights  Agreement) or (ii) a Disqualified  Transferee (as defined
in the Rights Agreement),  such Rights shall automatically  become null and void
and no holder  hereof  shall have any right with respect to such Rights from and
after the occurrence of such Common Stock Event.

         The  Rights  evidenced  by  this  Rights   Certificate   shall  not  be
exercisable,  and shall be void so long as held, by a holder in any jurisdiction
where  the  requisite  qualification  to the  issuance  to such  holder,  or the
exercise by such holder, of the Rights in such jurisdiction  shall not have been
obtained or be obtainable.

         As provided in the Rights Agreement,  the Purchase Price and the number
and type of  securities  which may be purchased  upon the exercise of the Rights
evidenced by this Rights  Certificate are subject to modification and adjustment
upon the happening of certain events.

         In the  circumstances  described in Section 13 of the Rights Agreement,
the securities  issuable upon the exercise of the Rights  evidenced hereby shall
be the common  stock or similar  equity  securities  or equity  interests  of an
entity other than the Trust.

         This Rights Certificate is subject to all of the terms, provisions, and
conditions of the Rights Agreement,  which terms, provisions, and conditions are
hereby  incorporated  herein by  reference  and made a part  hereof and to which
Rights Agreement  reference is hereby made for a full description of the rights,
limitations of rights,  obligations,  duties,  and  immunities  hereunder of the
Rights  Agent,  the Trust,  and the  holders of the Rights  Certificates,  which
limitations of rights include the temporary  suspension of the exercisability of
such Rights under the specific  circumstances set forth in the Rights Agreement.
Copies of the Rights  Agreement  are on file at the  office of the Rights  Agent
designated for such purpose and may be obtained by the holder of any Rights upon
written request to the Rights Agent.


<PAGE>

         This Rights  Certificate,  with or without  other Rights  Certificates,
upon  surrender at the office of the Rights Agent  designated  for such purpose,
accompanied by a signature  guarantee and such other documentation as the Rights
Agent designated for such purpose may reasonably  request,  may be exchanged for
another  Rights  Certificate  or  Rights  Certificates  of like  tenor  and date
evidencing  Rights  entitling the holder to purchase a like aggregate  number of
shares of Common  Stock (or  other  consideration,  as the case may be),  as the
Rights evidenced by the Rights  Certificate or Rights  Certificates  surrendered
shall have entitled such holder to purchase. If this Rights Certificate shall be
exercised  in part,  the holder  shall be entitled to  receive,  upon  surrender
hereof,  another  Rights  Certificate or Rights  Certificates  for the number of
whole Rights not exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this  Certificate  may be  redeemed  by the Trust by a  majority  vote of the
Trustees  then  in  office,  at any  time  prior  to  the  earlier  of  (i)  the
Distribution  Date or (ii) the close of business on the  Expiration  Date,  at a
redemption  price of $.01 per Right (which  amount is subject to  adjustment  as
provided in the Rights Agreement).  In addition, in certain  circumstances,  the
Rights  may be  exchanged,  in whole or in part,  for  shares of  Common  Stock.
Immediately upon the action of the Board ordering the exchange of any Rights and
without any further  action and without any notice,  the right to exercise  such
Rights will  terminate and the only right  thereafter of a holder of such Rights
will be to  receive  that  number of shares of Common  Stock  issuable  upon the
exchange.

         The  Trust is not  obligated  to issue  whole or  fractional  shares of
Common  Stock (or other  securities)  upon the  exercise  of any Right or Rights
evidenced hereby, but in lieu thereof a cash payment may be made at the election
of the Trust, as provided in the Rights Agreement.

         No holder of this  Rights  Certificate,  as such,  shall be entitled to
vote or  receive  dividends  or be deemed for any  purpose  the holder of Common
Stock or of any other  securities of the Trust which may at any time be issuable
on the exercise hereof,  nor shall anything contained in the Rights Agreement or
herein be construed to confer upon the holder hereof, as such, any of the rights
of a shareholder  of the Trust or any right to vote for the election of trustees
or upon any matter submitted to shareholders at any meeting thereof,  or to give
or withhold consent to any action by the Trust, or to receive notice of meetings
or other  actions  affecting  shareholders  (except  as  provided  in the Rights
Agreement), or to receive dividends or subscription rights, or otherwise,  until
the  Right or  Rights  evidenced  by this  Rights  Certificate  shall  have been
exercised as provided in the Rights Agreement.

         Reference is hereby made to the declaration of trust  establishing  the
Trust dated July 18, 1929, as amended,  a copy of which is on file in the office
of the  Secretary  of  State  of The  Commonwealth  of  Massachusetts.  The name
"Eastern  Enterprises" refers to the trustees under such declaration as trustees
and not personally. No trustee, shareholder, officer or agent of the Trust shall
be held to any personal  liability in  connection  with the affairs of the Trust
and only the trust estate may be liable.

<PAGE>

         This  Rights  Certificate  shall  not be  valid or  obligatory  for any
purpose until it shall have been countersigned by the Rights Agent.


<PAGE>



        WITNESS the facsimile signature of the proper officers and the seal
of the Trust.  Dated as of _________  --, ----.

                                       EASTERN ENTERPRISES


                                       By_____________________________________
                                       Title:

ATTEST:


- --------------------------------
Title:




Countersigned:

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




By_____________________________
   Authorized Signatory

  Date of Countersignature:


<PAGE>


                  [Form of Reverse Side of Rights Certificate]

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
               holder desires to transfer the Rights Certificate)

     FOR VALUE RECEIVED ________________________ hereby sells, assigns and

     transfers unto ----------------------


- ----------------------------------------------------------------------------
                 (Please print name and address of transferee)

_____________________________________________________________________     whose
social security or tax  identification  number,  is:  ______________  the Rights
evidenced  by this  Rights  Certificate,  together  with all  right,  title  and
interest   herein,   and  does  hereby   irrevocably   constitute   and  appoint
____________________  Attorney, to transfer the within Rights Certificate on the
books of the within-named Trust, with full power of substitution.

Dated: _________________________, ____.

                                                     -------------------------
                                                     Signature

Signature Guaranteed:*


<PAGE>

                                  Certificate


         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

         (1) the Rights evidenced by this Rights Certificate [ ] are [ ] are not
being sold,  assigned and  transferred by or on behalf of a Person who is or was
an Acquiring Person or an Affiliate of an Acquiring Person (as each such term is
defined in the Rights Agreement);

         (2) after due inquiry and to the best knowledge of the undersigned,  it
[ ] did [ ] did not acquire  the Rights  evidenced  by this  Rights  Certificate
after the  occurrence  of a Common  Stock  Event  from any Person who is, was or
subsequently became an Acquiring Person or an Affiliate of an Acquiring Person.

Dated:____________________          ______________________________________
                                                  Signature

Signature Guaranteed:*


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


                                     NOTICE

         The  signature  to  the  foregoing   Assignment  and  Certificate  must
correspond  to the name as written upon the face of this Rights  Certificate  in
every particular, without alteration or enlargement or any change whatsoever.


<PAGE>

                          FORM OF ELECTION TO PURCHASE

            (To be executed if holder desires to exercise the Rights
                                  Certificate)



To Eastern Enterprises

         The undersigned hereby irrevocably elects to exercise _________________
Rights  represented by this Rights  Certificate to purchase the number of shares
of Common Stock (or other securities)  issuable upon the exercise of such Rights
and requests that certificates for such shares be issued in the name of:

Please insert social security
or other identifying number ________________________________________

               --------------------------------------------------------------
                        (Please print name and address)

If such number of Rights  shall not be all the Rights  evidenced  by this Rights
Certificate,  a new Rights  Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security
or other identifying number ________________________________________

               --------------------------------------------------------------
                        (Please print name and address)

Dated: _______________________, ____


                                ------------------------------
                                Signature

                                (Signature must conform in all respects to name
                                of holder as specified on the face of this
                                Rights Certificate)

Signature Guaranteed:**


** Signature must be guaranteed by an "Eligible Guarantor Institution" (with
membership in an approved signature guarantee medallion program) pursuant to
Rule 17Ad-15 of the Securities Exchange Act of 1934.


<PAGE>

                                  Certificate



         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

         (1) the Rights evidenced by this Rights Certificate [ ] are [ ] are not
being exercised by or on behalf of a Person who is or was an Acquiring Person or
an Affiliate of any such  Acquiring  Person (as each such term is defined in the
Rights Agreement); and

         (2) after due inquiry and to the best knowledge of the undersigned,  it
[ ] did [ ] did not acquire  the Rights  evidenced  by this  Rights  Certificate
after the  occurrence  of a Common  Stock  Event (as such term is defined in the
Rights  Agreement)  from any  Person  who is,  was,  or  subsequently  became an
Acquiring Person or an Affiliate of an Acquiring Person.


Dated: _________________, ____              _________________________
                                                   Signature



Signature Guaranteed:***



- ------------------------
** Signature must be guaranteed by an "Eligible Guarantor Institution" (with
membership in an approved signature guarantee medallion program) pursuant to
Rule 17Ad-15 of the Securities Exchange Act of 1934.



<PAGE>

                                                                     EXHIBIT B



                              EASTERN ENTERPRISES

                           SUMMARY OF PURCHASE RIGHTS

         On July 22,  1998,  the Board of  Trustees  (the  "Board")  of  Eastern
Enterprises (the "Trust")  declared a dividend of one purchase right (a "Right")
for every  outstanding  share of the Trust's  common stock,  $1.00 par value per
share (the  "Common  Stock").  The Rights  will be  distributed  at the close of
business upon the earlier to occur of (i) the date of redemption by the Trust of
the Trust's  outstanding  Rights  pursuant to the Common Stock Rights  Agreement
dated as of February  22, 1990,  as amended,  and (ii)  February  18,  2000,  to
shareholders  of record as of the close of business on such date (the  "Dividend
Record Date"). The terms of the Rights are set forth in a Rights Agreement dated
as of July 22, 1998 (the "Rights  Agreement")  between the Trust and BankBoston,
N.A. (the "Rights Agent"). The Rights Agreement provides for the issuance of one
Right for every share of Common  Stock  issued and  outstanding  on the Dividend
Record  Date and for each  share of Common  Stock  which is issued or sold after
that date and prior to the "Distribution Date" (as defined below).

         Each Right  entitles the holder to purchase from the Trust one share of
Common  Stock at a price of $160 per share,  subject to  adjustment.  The Rights
will  expire  on July 22,  2008 (the  "Expiration  Date"),  or upon the  earlier
redemption of the Rights, and are not exercisable until the Distribution Date.

         No separate  Rights  certificates  will be issued at the present  time.
Until the Distribution Date (or earlier redemption or expiration of the Rights),
(i) the Rights will be evidenced by the Common  Stock  certificates  and will be
transferred with and only with such Common Stock  certificates,  (ii) new Common
Stock  certificates  issued after the Dividend  Record Date upon transfer or new
issuance of the Trust's Common Stock will contain a notation  incorporating  the
Rights Agreement by reference and (iii) the surrender for transfer of any of the
Trust's  Common  Stock  certificates  will also  constitute  the transfer of the
Rights associated with the Common Stock represented by such certificate.

         The Rights will separate from the Common Stock and Rights  certificates
will be  issued on the  Distribution  Date.  Unless  otherwise  determined  by a
majority of the Board then in office,  the  Distribution  Date will occur on the
date which is after the  Dividend  Record  Date and the earlier of (i) the tenth
business day  following  the later of the date of a public  announcement  that a
person,  including  affiliates  and  associates  of such  person (an  "Acquiring
Person"),  except as  described  below,  has  acquired or obtained  the right to
acquire, beneficial ownership of 10% or more of the outstanding shares of Common
Stock  or the date on  which  an  executive  officer  of the  Trust  has  actual
knowledge  that an  Acquiring  Person  became  such  (later  being,  the  "Stock
Acquisition  Date") or (ii) the tenth business day following  commencement  of a
tender offer or exchange offer that would result in any person together with its
affiliates and associates owning 10% or more of the Trust's  outstanding  Common

<PAGE>

Stock.  In any event,  the Board of Trustees may delay the  distribution  of the
certificates.  After the Distribution Date, separate certificates evidencing the
Rights  ("Rights  Certificates")  will be  mailed  to  holders  of record of the
Trust's  Common Stock as of the close of business on the  Distribution  Date and
thereafter such separate Rights Certificates alone will evidence the Rights.

         If, at any time after the Dividend  Record Date, any person or group of
affiliated or associated persons (other than the Trust and its affiliates) shall
become  an  Acquiring  Person,  each  holder  of a Right  will have the right to
receive shares of the Trust's Common Stock (or, in certain circumstances,  cash,
property or other  securities  of the Trust)  having a market value of two times
the exercise price of the Right. For example, if the exercise price is $160, the
holder of each Right would be entitled  to receive  $320 in market  value of the
Trust's  Common  Stock for $160.  Also,  in the event that at any time after the
Stock  Acquisition  Date the Trust was  acquired  in a merger or other  business
combination,  or more than 25% of its  assets or  earning  power was sold,  each
holder  of a Right  would  have the right to  exercise  such  Right and  thereby
receive  common stock of the acquiring  company with a market value of two times
the exercise price of the Right. Thus, if the exercise price is $160, the holder
of each Right would be entitled to receive $320 in market value of the acquiring
company's common stock upon payment of the $160. Following the occurrence of any
of the  events  described  in this  paragraph,  any Rights  that are,  or (under
certain  circumstances  specified in the Rights  Agreement)  were,  beneficially
owned by any  Acquiring  Person or  Disqualified  Transferee  shall  immediately
become null and void.

         The Board may, at its option,  at any time after any person  becomes an
Acquiring  Person,  exchange all or part of the then outstanding and exercisable
Rights for shares of Common  Stock at an  exchange  ratio of one share of Common
Stock per Right,  appropriately  adjusted  to  reflect  any stock  split,  stock
dividend or similar  transaction  occurring after the date of declaration of the
Rights  (such  exchange  ratio being  hereinafter  referred to as the  "Exchange
Ratio").  The Board,  however,  may not effect an exchange at any time after any
person (other than (i) the Trust,  (ii) any  subsidiary of the Trust,  (iii) any
employee  benefit plan of the Trust or any such subsidiary or any entity holding
Common Stock for or pursuant to the terms of any such plan),  together  with all
affiliates of such person,  becomes the  beneficial  owner of 50% or more of the
Common Stock then outstanding. Immediately upon the action of the Board ordering
the  exchange  of any Rights and  without  any  further  action and  without any
notice,  the right to exercise  such Rights  will  terminate  and the only right
thereafter  of a holder of such Rights will be to receive  that number of shares
of Common Stock equal to the number of such Rights held by the holder multiplied
by the Exchange Ratio.

         The  exercise  price of the Rights,  and the number of shares of Common
Stock or other  securities or property  issuable upon exercise of the Rights are

<PAGE>

subject to adjustment from time to time to prevent  dilution (i) in the event of
a stock dividend on, or a subdivision,  combination or reclassification  of, the
Common  Stock,  (ii) upon the grant to holders  of the  Common  Stock of certain
rights or warrants to subscribe  for shares of the Common  Stock or  convertible
securities  at less than the current  market  price of the Common Stock or (iii)
upon  the   distribution  to  holders  of  the  Common  Stock  of  evidences  of
indebtedness  or assets  (excluding  cash  dividends paid out of the earnings or
retained  earnings  of  the  Trust  and  certain  other   distributions)  or  of
subscription rights or warrants (other than those referred to above).

         With certain  exceptions,  no  adjustments in the exercise price of the
Rights will be required until cumulative  adjustments  equal at least 1% in such
price.

         At any time prior to the earlier of (i) the  Distribution  Date or (ii)
the close of business on the Expiration  Date, the Trust,  by a majority vote of
the Board then in office,  may redeem the Rights at a  redemption  price of $.01
per Right (the  "Redemption  Price"),  as  described  in the  Rights  Agreement.
Immediately  upon the action of the Board  electing  to redeem the  Rights,  the
right to exercise the Rights will terminate and the only right of the holders of
Rights will be to receive the Redemption Price.

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a shareholder of the Trust, including,  without limitation,  the right
to vote or to receive dividends.

         Neither the distribution of the Rights nor the subsequent separation of
the Rights on the Distribution Date will be a taxable event for the Trust or its
shareholders. Holders of Rights may, depending upon the circumstances, recognize
taxable income upon the occurrence of certain Rights triggering events including
a  tender  offer  for 10% or more of the  Common  Stock  or a  person  or  group
attaining beneficial ownership of 10% or more of the Common Stock (collectively,
"Common Stock Events").  In addition,  holders of Rights may have taxable income
as a result of (i) an exchange by the Trust of shares of Common Stock for Rights
as described above or (ii) certain  anti-dilution  adjustments made to the terms
of the Rights after the Distribution Date. A redemption of the Rights would be a
taxable event to holders.

         The Rights  Agreement  may be amended by the Board at any time prior to
the  Distribution  Date without the approval of the holders of the Rights.  From
and after the  Distribution  Date,  the Rights  Agreement  may be amended by the
Board  without  the  approval  of the holders of the Rights in order to cure any
ambiguity,  to correct any defective or inconsistent  provisions,  to change any
time period for  redemption or any other time period under the Rights  Agreement
or to make any other changes that do not  adversely  affect the interests of the
holders of the Rights (other than any  Acquiring  Person or its  affiliates,  or
associates or their transferees).
         Reference is hereby made to the declaration of trust  establishing  the
Trust dated July 18, 1929, as amended,  a copy of which is on file in the office
of the  Secretary  of  State  of The  Commonwealth  of  Massachusetts.  The name
"Eastern  Enterprises" refers to the trustees under such declaration as trustees

<PAGE>

and not personally. No trustee, shareholder, officer or agent of the Trust shall
be held to any personal  liability in  connection  with the affairs of the Trust
and only the trust estate may be liable.

         A copy of the Rights  Agreement  will be filed with the  Securities and
Exchange  Commission  as an  Exhibit  to  the  Trust's  Form  8-A.  registration
statement  with  respect  to the  Rights.  A copy  of the  Rights  Agreement  is
available free of charge from the Rights Agent, at the following address:

                  BankBoston, N.A.
                  c/o Boston EquiServe, L.P.
                  150 Royall Street
                  Canton, MA 02021
                  Attn: Client Administration
                  (Eastern Enterprises Rights Agreement)

This  summary  description  of the Rights does not purport to be complete and is
qualified  in its  entirety  by  reference  to the  Rights  Agreement,  which is
incorporated herein by reference.



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