[EXHIBIT 4d TO COLONIAL GAS COMPANY
         FORM 10-K FOR YEAR ENDED DECEMBER 31, 1995]


      THIS  AMENDMENT TO SECOND SUPPLEMENTAL INDENTURE, dated
as  of  August  1,  1995 (hereinafter  referred  to  as  this
"Amendment" or this "Instrument"), made and entered  into  by
and   between  Colonial  Gas  Company,  a  corporation   duly
organized and existing under the laws of The Commonwealth  of
Massachusetts, having its principal place of business  at  40
Market Street, Lowell, Massachusetts (hereinafter referred to
as  the "Company"), and The First National Bank of Boston,  a
corporation duly organized and existing under the laws of The
Commonwealth of Massachusetts, having its principal place  of
business  at  100  Federal Street, Boston, Massachusetts,  as
successor Trustee (hereinafter referred to, together with its
successors  hereunder,  as the "Trustee")  under  the  Second
Amended  and  restated First Mortgage Indenture dated  as  of
June  15,  1992,  as  supplemented by the First  Supplemental
Indenture   dated  as  of  June  15,  1992  and  the   Second
Supplemental Indenture (the "Second Supplement") dated as  of
August   1,  1995  (as  amended  and  so  supplemented,   the
"Indenture").

      WHEREAS,  the Company has heretofore duly executed  and
delivered to the Trustee the Second Supplement, to  issue  up
to   $75,000,000  in  aggregate  principal  amount  of  First
Mortgage Bonds designated Secured Medium Term Notes, Series A
(herein  referred  to  as the "Series  A  Notes")  under  the
Indenture,  which Series A Notes are to be further designated
and  described,  as  to  dates, maturities,  interest  rates,
sinking   funds,  denominations  and  redemption   and   call
provisions,  in  such Series A Notes which  the  Company  may
issue  from  time  to time, each in the form hereinafter  set
forth   (and  the  Trustee  hereby  confirms  its   approval,
previously  given prior to the certification of any  of  said
additional  Series  A  Notes, of  the  form  and  designation
thereof so specified); and

      WHEREAS,  the  Company  desires  to  amend  the  Second
Supplemental  to confirm its ability to fix interest  payment
dates as it may determine;

      NOW, THEREFORE, THIS INSTRUMENT (BEING THE AMENDMENT TO
SECOND  SUPPLEMENT  TO  THE INDENTURE)  WITNESSETH  that,  in
consideration  of  the premises, and of  the  acceptance  and
purchase of the Series A Notes by the holders thereof, and of
the sum of $1.00 duly paid by the Trustee to the Company, and
of  other  good  and valuable consideration, the  receipt  of
which  is  hereby  acknowledged, and in confirmation  of  and
supplementing  and amending the Indenture and in  performance
of  and  compliance with the provisions thereof, the  Company
and the Trustee agree as follows:

                          ARTICLE I
                              
                       Series A Notes

      Section 1.01.  Amendment of the Second Supplement.  The
Second Supplement is hereby amended as follows:

      (a)   The  first paragraph of the Form of the Series  A
Note  in  the last recital is amended by deleting  the  words
"February 15 and August 15" and replacing them with "April 14
& October 14."

      (b)   The  first  paragraph of Section 1.01  is  hereby
amended  by  adding the phrase, "or such other dates  as  set
forth  in the form of such Notes," after the phrase "February
15 and August 15 in each year."

     IN WITNESS WHEREOF, Colonial Gas Company has caused this
Amendment to be executed, and its corporate seal to be hereto
affixed, by its officers thereunto duly authorized,  and  The
First National Bank of Boston has caused this Amendment to be
executed, and its corporate seal to be hereto affixed, by its
officers  thereunto duly authorized, all as of  the  day  and
year  first  above written but actually on the  12th  day  of
October, 1995.

                              COLONIAL GAS COMPANY

[SEAL]                        By   Dennis W. Carroll
                                   Vice President

                              BY   Dennis W. Carroll
                                   Treasurer

Attest:

    Timothy A. Clark
    Assistant Clerk

                              THE FIRST NATIONAL BANK OF
                              BOSTON, as Trustee

[SEAL]                        By      Terence A. McGiunnis
                                      Authorized Officer
  

Attest:

      Michael R. Garfield
      Assistant Secretary


Commonwealth of Massachusetts )
                              )  ss.:
County of Middlesex           )


      On  this 12th day of October, 1995 before me personally
appeared  Dennis  W.  Carroll and Timothy  A.  Clark,  to  me
personally known, who, being by me duly sworn, did  say  that
they  are  the Vice President and Treasurer and the Assistant
Clerk,  respectively, of Colonial Gas Company, that the  seal
affixed to the foregoing instrument is the corporate seal  of
said  corporation, and that said instrument  was  signed  and
sealed by them on behalf of said corporation by authority  of
its  Board  of Directors; and the said Dennis W. Carroll  and
Timothy A. Clark, acknowledged said instrument to be the free
act and deed of said corporation.

                                                  [Seal]


                                   June T. Abreu
                                   Notary Public
                                   My  Commission  Expires:
                                        2/19/99


Commonwealth of Massachusetts )
                              )  ss.:
County of Middlesex           )


      On  this 23rd day of October, 1995 before me personally
appeared Terence  A. McGiunnis, to me personally known, who, being  by
me  duly  sworn, did say that he is an Authorized Officer  of
The  First National Bank of Boston, that the seal affixed  to
the  foregoing instrument is the corporate seal of said bank,
and  that  said instrument was signed and sealed  by  him  on
behalf  of said bank, by authority of its Board of Directors;
and   the   said  Terence  A.  McGiunnis  acknowledged   said
instrument  to be the free act and deed of said  company,  as
trustee.

                                              [Seal]

                                   Michael R. Garfield
                                   Notary Public
                                   My   Commission   Expires:
                                    January 31, 1997


                    COLONIAL GAS COMPANY
         Amendment to Second Supplemental Indenture
            Dated as of August 1, 1995 to Second
        Amended and Restated First Mortgage Indenture


     The above Amendment to Second Supplemental Indenture was
filed for recordation in Massachusetts as follows:


Location                 Date        Reference

Secretary of the         10/26/95    Document Nos.
Commonwealth                         374252 and 347251

Barnstable County        10/27/95    Instrument No.54662
                                     Book 9903 Page 289

Barnstable County, Land  10/27/95    Document No. 650917
Registration                         Certificates of Title
Division			     Nos. 46050 (131302)
                                     59716 (178392), and
                                     84810 (278220)

Middlesex County,        10/30/95    Instrument No.49470
North Division                       Book ______, Page______

Middlesex County,        10/26/95    Instrument No. 699
South Division                       Book ______, Page ______

Plymouth                 11/3/95     Instrument No.96562
                                     Book 13940, Page 16


              [EXHIBIT 4d TO COLONIAL GAS COMPANY
         FORM 10-K FOR YEAR ENDED DECEMBER 31, 1995]