SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 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) November 16, 1998


                              BAY STATE GAS COMPANY
             (Exact Name of Registrant as Specified in its Charter)



     Massachusetts                         1-7479                04-2548120
(State or Other Jurisdiction            (Commission            (IRS Employer
    of Incorporation)                   File Number)         Identification No.)



300 Friberg Parkway, Westborough, MA                            01581-5039
(Address of Principal Executive Offices)                        (Zip Code)

Registrant's telephone number, including area code (508) 836-7000


          (Former Name or Former Address, if Changed Since Last Report)








Item 5.  Other Events.

         The  Amended and  Restated  Agreement  and Plan of Merger (the  "Merger
Agreement") among NIPSCO Industries,  Inc.  ("NIPSCO") and Bay State Gas Company
("Bay State"),  which provides for a strategic business combination of Bay State
and NIPSCO,  was amended as of November 16, 1998.  This  amendment to the Merger
Agreement (the "Amendment") provides for the following changes thereto:

         (i) The cash election process pursuant to which Bay State  shareholders
         may elect to receive cash as  consideration  for their Bay State shares
         in the merger  shall occur  after,  instead of prior to, the  Effective
         Time (as defined in the Merger Agreement).  The Amendment states that a
         Letter  of  Transmittal/Form  of  Election  will be mailed to Bay State
         shareholders  as soon as  practicable  after the Effective Time and, in
         order to make an effective  cash election,  the Bay State  shareholders
         will be required to return the completed Letter of  Transmittal/Form of
         Election (along with appropriate documentation) to the Paying Agent (as
         defined in the Merger Agreement) by a deadline which will be no earlier
         than 10 business days after such mailing;

         (ii) Shares of Bay State  common  stock held in the Bay State  Dividend
         Reinvestment and Stock Purchase Plan shall automatically be transferred
         to the NIPSCO Automatic Dividend  Reinvestment and Share Purchase Plan,
         unless an effective cash election is made for such shares; and

         (iii) Acquisition Gas Company, Inc., a Massachusetts  Corporation and a
         wholly  owed  subsidiary  of  NIPSCO,  has been added as a party to the
         Merger Agreement.

         The  description  of the Merger  Agreement  set forth  herein  does not
purport to be complete and is qualified in its entirety by the provisions of the
Merger  Agreement,  which is attached  hereto as Exhibit 2.1 and is incorporated
herein by reference.


Item 7.  Financial Statements, Pro Forma Financial Information, and Exhibits

The following exhibits are filed herewith:

2.1      First  Amendment  dated as of  November  16,  1998 to the  Amended  and
         Restated  Agreement and Plan of Merger among NIPSCO  Industries,  Inc.,
         Bay State Gas Company and Acquisition Gas Company.












                                    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.

                                          BAY STATE GAS COMPANY


Dated:  November 24, 1998                 By:/s/ Thomas W. Sherman
                                             ---------------------
                                      Name: Thomas W. Sherman
                                      Title:   Executive Vice-President, Chief
                                                Financial Officer and Treasurer







                                  EXHIBIT INDEX



EXHIBIT NUMBER      DESCRIPTION

2.1                 First Amendment dated as of November 16, 1998 to the Amended
                    and Restated Agreement and Plan of Merger among NIPSCO
                    Industries, Inc., Bay State Gas Company and Acquisition Gas
                    Company.