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                                 UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                            Washington, D. C.  20549



                                  SCHEDULE 13D


                   Under the Securities Exchange Act of 1934
                               (Amendment No. 6)




                        American Oil and Gas Corporation
                        --------------------------------
                                (Name of Issuer)

                          Common Stock, $.04 par value
                         ------------------------------
                         (Title of Class of Securities)

                                   028711109   
                                 -------------
                                 (CUSIP Number)


                                Robert Rothberg
                       Vice President and General Counsel
                               Cabot Corporation
                                75 State Street
                             Boston, MA 02109-1806
                                 (617-345-0100)
                       ----------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)




                                 July 13, 1994   
                                 -------------
            (Date of Event which Requires filing of this Statement)



If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
Schedule because of Rule 13d-1(b)(3) or (4), check the following box: /_/

Check the following box if a fee is being
paid with this statement: /_/
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CUSIP No. 028711109                                         Page 2 of 4 Pages
- -------------------                                         ------------------


_______________________________________________________________________________

(1)   Name of Reporting Person
      S.S. or I.R.S. Identification
      No. of Above Person                                   Cabot Corporation
                                                                  04-2271897
_______________________________________________________________________________
(2)   Check the Appropriate Box if a Member of
      a Group                                               (a)______________
                                                            (b)      x       
                                                               ______________
_______________________________________________________________________________
(3)   SEC Use Only
_______________________________________________________________________________
(4)   Source of funds

      00                                                                  
_______________________________________________________________________________
(5)   Check Box if Disclosure of Legal Proceedings is Required     ------
      Pursuant to Items 2(d) or 2(e)                               ------
______________________________________________________________________________
(6)   Citizenship or Place of Organization                 Delaware
______________________________________________________________________________
(7)   Sole Voting Power                                        0
______________________________________________________________________________
(8)   Shared Voting Power                                      0
______________________________________________________________________________
(9)   Sole Dispositive Power                                   0
______________________________________________________________________________
(10)  Shared Dispositive Power                                 0
______________________________________________________________________________
(11)  Aggregate Amount Beneficially Owned by Each
      Reporting Person                                         0
______________________________________________________________________________
(12)  Check Box if the Aggregate Amount in Row (11)                 ------
      Excludes Certain Shares (See Instructions)                    ------
_______________________________________________________________________________
(13)  Percent of Class Represented by Amount
      in Row 11                                        0%
______________________________________________________________________________
(14)  Type of Reporting Person (See Instructions)      CO
_______________________________________________________________________________
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CUSIP No. 028711109                                         Page 3 of 4 Pages
- -------------------                                         -----------------



     This Amendment No. 6 amends and terminates the Schedule 13D filed
with the Commission on November 24, 1989, and as amended on February 6, 1990,
July 19, 1991, July 8, 1992, February 19, 1993  and March 24, 1994,  by Cabot
Corporation ("Cabot").  This Schedule 13D as originally filed with the
Commission was also filed on behalf of Cabot Energy Corporation ("Energy") and
Cabot Transmission Corporation ("Transmission").  The Schedule 13D is hereby
amended to add the following:


ITEM 4.    PURPOSE OF TRANSACTION.
           
           See Item 5 below.

ITEM 5.    INTEREST IN SECURITIES OF THE ISSUER.

           On July 13, 1994, Cabot ceased to be the beneficial owner of any
class of securities of American as a result of the merger (the "Merger") of
American into a wholly-owned subsidiary of K N Energy, Inc., a Kansas
corporation ("K N").

ITEM 6.    CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS
           WITH RESPECT TO SECURITIES OF THE ISSUER.

           Certain of the provisions of the Standstill Agreement between
American and Cabot (described in Item 4 of earlier Amendments to this Schedule
13D) were terminated by American on July 13, 1994, in connection with the
Merger.  Registration rights provided under the Standstill Agreement and under
a Warrant Shares Registration Rights Agreement between American and Cabot were
not terminated and were assumed by K N in connection with the Merger.

ITEM 7.    MATERIAL TO BE FILED AS EXHIBITS.

Exhibit 1.    Letter from American Oil and Gas Corporation to Cabot Corporation
              dated July 13, 1994, terminating certain provisions of the
              Standstill Agreement.



                                   SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I 
certify that the information set forth in this statement is true, complete and
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CUSIP No. 028711109                                         Page 4 of 4 Pages
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correct.
                                                  CABOT CORPORATION
                                                  By: /s/ Robert Rothberg 
                                                      -------------------
                                                      Robert Rothberg
                                                      Vice President



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       CUSIP No. 028711109                                      Exhibit 1
       -------------------
                                     
                                        July 12, 1994





Cabot Corporation
75 State Street
Boston, Massachusetts 02109

Attention: Mr. Robert Rothberg

Ladies and Gentlemen:

        Reference is made to that certain Standstill and Registration Rights
Agreement dated as of November 13, 1989 between American Oil And Gas
Corporation, a Delaware corporation ("AOG"), and Cabot Corporation, a Delaware
Corporation ("Cabot") (the "Standstill Agreement").  Pursuant to Section 8(a)
of the Standstill Agreement, AOG hereby terminates the Standstill Agreement
upon the effectiveness of the merger of AOG with KNE Acquisition Corporation, a
wholly-owned subsidiary of K N Energy, Inc., except that Section 7 of the
Standstill Agreement shall remain in full force and effect to the extent the
obligations under Section 7 have been assumed by K N Energy, Inc. by letter
agreement addressed to you of even date herewith.


                                Very truly yours,

                                AMERICAN OIL AND GAS
                                CORPORATION

                        

                                By: /s/ David M. Carmichael
                                    ---------------------------------
                                    David M. Carmichael, Chairman of the
                                    Board and Chief Executive Officer