SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 3)*

                            Tejas Gas Corporation                              
                                (Name of Issuer)

                     Common Stock, par value $.25 per share 
                         (Title of Class of Securities)

                                  879075-10-9           
                                 (CUSIP Number)

                            Thomas R. Stephens, Esq.
                      Bartlit Beck Herman Palenchar & Scott
                         511 Sixteenth Street, Suite 700
                             Denver, Colorado  80202
                                  (303) 592-3100                           
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                               January 12, 1998           
             (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     [ ].

Note:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are to
be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                        (Continued on following page(s))


CUSIP No. 879075-10-9
                                  SCHEDULE 13D
Page 1 of 5


                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION..
      
    1      NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)
           FREDERIC C. HAMILTON

    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                            (a)     
                                                           
                                                            (b)  X

    3      SEC USE ONLY


    4      SOURCE OF FUNDS*
           PF

    5      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO 
           ITEMS 2(D) OR 2(E)                                 [ ]  
                   
           
    6      CITIZENSHIP OR PLACE OF ORGANIZATION
           U.S.A.

          NUMBER OF          7    SOLE VOTING POWER
           SHARES
                                  0

          BENEFICIALLY       8    SHARED VOTING POWER

         OWNED BY
           EACH
         REPORTING           9    SOLE DISPOSITIVE POWER
          
          PERSON                  0
                                
          WITH              10    SHARED DISPOSITIVE POWER



    11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
           0
    12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES*                                                     [ ]

    13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           0%
    14     TYPE OF REPORTING PERSON*

           IN





                                Page 2 of 4 Pages

                  Amendment No. 3 to Statement on Schedule 13D

            This amended statement on Schedule 13D relates to the shares of
Common Stock, par value $.25 per share (the "Shares") of Tejas Gas Corporation,
a Delaware corporation (the "Company").  Item 5 of this statement, previously
filed by Frederic C. Hamilton (the "Reporting Person"), is hereby amended as set
forth below.
      
      Item 5.     Interest in Securities of the Issuer:

      As previously disclosed in this statement, the Company, Shell Oil
      Company ("Shell") and certain other companies formed by Shell
      entered into a merger agreement dated September 23, 1997, pursuant
      to which the Company merged with a special purpose subsidiary of
      Shell.  The merger was effected on January 12, 1998.  As a result of
      the merger, all of the outstanding Shares, including all Shares held
      by the Reporting Person, were acquired by Sierra Capital Acquisition
      Corp., a company formed by Shell.  As result, the Reporting Person
      ceased to be a beneficial owner of any Shares or any options to
      acquire Shares.


                
       
                                    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 correct.



Date:  January 20, 1998                   /s/ Frederic C. Hamilton
                                          Frederic C. Hamilton