SECURITIES AND EXCHANGE
                                   COMMISSION
                             Washington, D.C. 20549



                                 SCHEDULE 13G/A
                                 (Rule 13d-102)


             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                          PURSUANT TO RULE 13d-2(b)(1)


                               Carbo Ceramics Inc.
                               -------------------
                                (Name of Issuer)

                     Common Stock, par value $.01 per share
                     --------------------------------------
                         (Title of Class of Securities)

                                    140781108
                                    ---------
                                 (CUSIP Number)

                                December 31, 2004
                                -----------------
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
                                   is filed:

                                [ ] Rule 13d-1(b)
                                [ ] Rule 13d-1(c)
                                [X] Rule 13d-1(d)

        (1) 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 the disclosures provided in a prior cover page.

        The information required in 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 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).



CUSIP No. 140781108                   13G                      Page 2 of 5 Pages

1.   NAME OF REPORTING PERSON
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

     William C. Morris


2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                      (a) [ ]
                                                                      (b) [ ]

3.   SEC USE ONLY



4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     United States

                      5.   SOLE VOTING POWER

                           2,131,500
      NUMBER OF
       SHARES         6.   SHARED VOTING POWER
    BENEFICIALLY
      OWNED BY             55,116 (Beneficial ownership disclaimed; See Item 4)
        EACH
      REPORTING       7.   SOLE DISPOSITIVE POWER
       PERSON
        WITH               2,131,500

                      8.   SHARED DISPOSITIVE POWER

                           55,116 (Beneficial ownership disclaimed; See Item 4)

9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     2,186,616 (See Item 4)

10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*  [ ]


11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     13.7% (See Item 4)

12.  TYPE OF REPORTING PERSON*

     IN


                      *SEE INSTRUCTIONS BEFORE FILLING OUT!




Item 1(a).    Name of Issuer:
              Carbo Ceramics Inc.

Item 1(b).    Address of Issuer's Principal Executive Offices:
              6565 MacArthur Blvd.
              Suite 1050
              Irving, Texas 75039

Item 2(a).    Name of Person Filing:
              William C. Morris

Item 2(b).    Address of Principal Business Office or, if none, Residence:
              William C. Morris's principal business office is located at J. &
              W. Seligman & Co. Incorporated, 100 Park Avenue, New York, New
              York 10017.

Item 2(c).    Citizenship:
              William C. Morris is a citizen of the United States.

Item 2(d).    Title of Class of Securities:
              Common Stock, par value $.01 per share.

Item 2(e).    CUSIP Number:
              The CUSIP number for the Common Stock is 140781108.

Item 3.       If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b)
              or (c), Check Whether the Person Filing is a:


              (a)    [ ] Broker or dealer registered under Section 15 of the
                     Exchange Act.

              (b)    [ ] Bank as defined in Section 3(a)(6) of the Exchange
                     Act.

              (c)    [ ] Insurance company as defined in Section 3(a)(19) of
                     the Exchange Act.

              (d)    [ ] Investment company registered under Section 8 of
                     the Investment Company Act.

              (e)    [ ] An investment adviser in accordance with Rule
                     13d-1(b)(1)(ii)(E).

              (f)    [ ] An employee benefit plan or endowment fund in
                     accordance with Rule 13d-1(b)(1)(ii)(F).

              (g)    [ ] A parent holding company or control person in
                     accordance with Rule 13d-1(b)(1)(ii)(G).

              (h)    [ ] A savings association as defined in Section 3(b) of
                     the Federal Deposit Insurance Act.

              (i)    [ ] A church plan that is excluded from the definition
                     of an investment company under Section 3(c)(14) of the
                     Investment Company Act.

              (j)    [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.       Ownership.

              (a) - (b)

              Mr. Morris may be deemed to be the beneficial owner of 2,186,616
shares, which constitutes approximately 13.7% of the shares outstanding. Mr.
Morris disclaims beneficial ownership of an aggregate of 55,116 shares owned by
the William C. and Susan F. Morris Foundation and the Cove Point Foundation.

              (c)

              Mr. Morris has sole power to vote or to direct the vote and to
dispose or to direct the disposition of 2,131,500 shares. Mr. Morris may be
deemed to share power to vote or to direct the vote and share power to dispose
or to direct the disposition of an additional 55,116 shares, as to which Mr.
Morris disclaims beneficial ownership.

Item 5.       Ownership of Five Percent or Less of a Class.

              If this statement is being filed to report the fact that as of the
              date hereof the reporting person has ceased to be the beneficial
              owner of more than five percent of the class of securities, check
              the following [ ].

Item 6.       Ownership of More than Five Percent on Behalf of Another Person.

              Not Applicable.

Item 7.       Identification and Classification of the Subsidiary Which Acquired
              the Security Being Reported on by the Parent Holding Company.

              Not Applicable.

Item 8.       Identification and Classification of Members of the Group.

              Not Applicable.

Item 9.       Notice of Dissolution of Group.

              Not Applicable.

Item 10.      Certifications.

              Not Applicable.



                                    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.


Dated:  February 10, 2005
                                        By: /s/ William C. Morris1
                                            ----------------------------------
                                             Name: William C. Morris