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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                 SCHEDULE 13G


                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                             (AMENDMENT NO.   )*




                               KIRBY CORPORATION
                   -----------------------------------------                   
                               (Name of Issuer)

                                  COMMON STOCK
                   -----------------------------------------
                         (Title of Class of Securities)

                                   497266106
                   -----------------------------------------
                               (CUSIP Number)





         Check the following box if a fee is being paid with this statement [ ].
         (A fee is not required only if the filing person: (1) has a previous
         statement on file reporting beneficial ownership of more than five
         percent of the class of securities described in Item 1; and (2) has
         filed no amendment subsequent thereto reporting beneficial ownership of
         five percent or less of such class.)  (See Rule 13d-7.)

         *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 ("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).


                 
                               Page 1 of 5 pages


<PAGE>   2


CUSIP NO. 497266106                 13G                   PAGE  2  OF 5  PAGES


1    NAME OF REPORTING PERSON
     S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
  
          GEOCAPITAL LLC
          13-3964629


2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 
                                                       
                                                         (a) [      ]
                                                         (b) [      ]
  
  
3    SEC USE ONLY
  
  
  
  
4    CITIZENSHIP OR PLACE OF ORGANIZATION
  
          DELAWARE
  
                    5    SOLE VOTING POWER
                        
                             NONE                   
                        
                        
   NUMBER OF        6    SHARED VOTING POWER
    SHARES              
 BENEFICIALLY                NONE
   OWNED BY             
     EACH               
   REPORTING        7    SOLE DISPOSITIVE POWER
    PERSON              
     WITH                    2,024,130

                        
                    8    SHARED DISPOSITIVE POWER
                        
                             NONE
                        
  
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
          2,024,130
  
  
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
  
         
  
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
  
          8.32%   
  
  
12   TYPE OF REPORTING PERSON*
  
          IA


                      *SEE INSTRUCTION BEFORE FILLING OUT!


                               Page 2 of 5 pages

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                         INSTRUCTIONS FOR SCHEDULE 13G

INSTRUCTIONS FOR COVER PAGE

(1)  Names and Social Security Numbers of Reporting Persons--Furnish the full
     legal name of each person for whom the report is filed--i.e., each person
     required to sign the schedule itself--including each member of a group. Do
     not include the name of a person required to be identified in the report
     but who is not a reporting person. Reporting persons are also requested to
     furnish their Social Security or I.R.S. identification numbers, although
     disclosure of such numbers is voluntary, not mandatory (see "SPECIAL
     INSTRUCTIONS FOR COMPLYING WITH SCHEDULE 13G," below).

(2)  If any of the shares beneficially owned by a reporting person are held as a
     member of a group and such membership is expressly affirmed, please check
     row 2(a). If the membership in a group is disclaimed or the reporting
     person describes a relationship with other persons but does not affirm the
     existence of a group, please check row 2(b) [unless a joint filing pursuant
     to Rule 13d-1(e)(1) in which case it may not be necessary to check row
     2(b)].

(3)  The third row is for SEC internal use; please leave blank.

(4)  Citizenship or Place of Organization--Furnish citizenship if the named
     reporting person is a natural person. Otherwise, furnish place of
     organization.

(5)-(9), (11) Aggregate Amount Beneficially Owned by Each Reporting Person,
     Etc.--Rows (5) through (9) inclusive, and (11) are to be completed in
     accordance with the provisions of Item 4 of Schedule 13G. All percentages
     are to be rounded off to the nearest tenth (one place after decimal point).

(10) Check if the aggregate amount reported as beneficially owned in row (9)
     does not include shares as to which beneficial ownership is disclaimed
     pursuant to Rule 13d-4 [17 CFR 240.13d-4] under the Securities Exchange
     Act of 1934.

(12) Types of Reporting Person--Please classify each "reporting person"
     according to the following breakdown (see Item 3 of Schedule 13G) and place
     the appropriate symbol on the form:

                          Category                     Symbol
               Broker-Dealer                             BD
               Bank                                      BK
               Insurance Company                         IC
               Investment Company                        IV
               Investment Adviser                        IA
               Employee Benefit Plan, Pension Fund,
                or Endowment Fund                        EP
               Parent Holding Company                    HC 
               Corporation                               CO
               Partnership                               PN
               Individual                                IN
               Other                                     OO

Notes:

   Attach as many copies of the second part of the cover page as are needed,
one reporting person per page.

   Filing persons may, in order to avoid unnecessary duplication, answer
items on the schedules (Schedule 13D, 13G or 14D-1) by appropriate cross
references to an item or items on the cover page(s). This approach may only be
used where the cover page item or items provide all the disclosure required by
the schedule item. Moreover, such a use of a cover page item will result in
the item becoming a part of the schedule and accordingly being considered as 
"filed" for purposes of Section 18 of the Securities Exchange Act or otherwise
subject to the liabilities of that section of the Act.

   Reporting persons may comply with their cover page filing requirements by
filing either completed copies of the blank forms available from the
Commission, printed or typed facsimiles, or computer printed facsimiles,
provided the documents filed have identical formats to the forms prescribed in
the Commission's regulations and meet existing Securities Exchange Act rules as
to such matters as clarity and size (Securities Exchange Act Rule 12b-12).

              SPECIAL INSTRUCTIONS FOR COMPLYING WITH SCHEDULE 13G

   Under Sections 13(d), 13(g), and 23 of the Securities Exchange Act of 1934
and the rules and regulations thereunder, the Commission is authorized to
solicit the information required to be supplied by this schedule by certain
security holders of certain issuers.

   Disclosure of the information specified in this schedule is mandatory,
except for Social Security or I.R.S. identification numbers, disclosure of
which is voluntary. The information will be used for the primary purpose of
determining and disclosing the holdings of certain beneficial owners of certain
equity securities. This statement will be made a matter of public record.
Therefore, any information given will be available for inspection by any member
of the public.

                               Page 3 of 5 pages

<PAGE>   4
     Because of the public nature of the information, the Commission can
utilize it for a variety of purposes, including referral to other governmental
authorities or securities self-regulatory organizations for investigatory
purposes or in connection with litigation involving the Federal securities laws
or other civil, criminal or regulatory  statutes or provisions. Social Security
or I.R.S. identification numbers, if furnished, will assist the Commission in
identifying security holders and, therefore, in promptly processing statements
of beneficial ownership of securities.

     Failure to disclose the information requested by this schedule, except for
Social Security or I.R.S. identification numbers, may result in civil or
criminal action against the persons involved for violation of the Federal
securities laws and rules promulgated thereunder.

                              GENERAL INSTRUCTIONS

A. Statements containing the information required by this schedule shall be
   filed not later than February 14 following the calendar year covered by the
   statement or within the time specified in Rule 13d-1(b)(2), if applicable.

B. Information contained in a form which is required to be filed by rules under
   section 13(f)(15 U.S.C. 78m(f)) for the same calendar year as that covered by
   a statement on this schedule may be incorporated by reference in response to
   any of the items of this schedule. If such information is incorporated by
   reference in this schedule, copies of the relevant pages of such form shall
   be filed as an exhibit to this schedule.

C. The item numbers and captions of the items shall be included but the text of
   the items is to be omitted. The answers to the items shall be so prepared as
   to indicate clearly the coverage of the items without referring to the text
   of the items. Answer every item. If an item is inapplicable or the answer is
   in the negative, so state.

ITEM 1.

     (a) Name of Issuer  KIRBY CORPORATION

     (b) Address of Issuer's Principal Executive Offices
                         1775 ST. JAMES PLACE-SUITE 200-HOUSTON, TX 77251-1745


ITEM 2.

     (a) Name of Person Filing  GEOCAPITAL LLC

     (b) Address of Principal Business Office or, if none, Residence
                         767 FIFTH AVENUE-45TH FLOOR-NY, NY 10153-4590

     (c) Citizenship  DELAWARE

     (d) Title of Class of Securities  COMMON STOCK

     (e) CUSIP Number  497266106

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b), OR 13d-2(b),
        CHECK WHETHER THE PERSON FILING IS A:

     (a) / / Broker or Dealer registered under Section 15 of the Act

     (b) / / Bank as defined in section 3(a)(6) of the Act

     (c) / / Insurance Company as defined in section 3(a)(19) of the Act

     (d) / / Investment Company registered under section 8 of the Investment
             Company Act

     (e) /X/ Investment Adviser registered under section 203 of the
             Investment Advisers Act of 1940

     (f) / / Employee Benefit Plan, Pension Fund which is subject to the
             provisions of the Employee Retirement Income Security Act of 
             1974 or Endowment Fund; see section 240.13d-1(b)(1)(ii)(F) 

     (g) / / Parent Holding Company, in accordance with section
             240.13d-1(b)(ii)(G) (Note: See Item 7)

     (h) / / Group, in accordance with section 240.13d-1(b)(1)(ii)(H)

ITEM 4. OWNERSHIP

     If the percent of the class owned, as of December 31 of the year covered by
the statement, or as of the last day of any month described in Rule
13d-1(b)(2), if applicable, exceeds five percent, provide the following
information as of that date and identify those shares which there is a right to
acquire.

     (a) Amount Beneficially Owned  2,024,130

     (b) Percent of Class  8.32%



                               Page 4 of 5 pages

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(c)  Number of shares as to which such person has:

    (i) sole power to vote or to direct the vote                 NONE

   (ii) shared power to vote or to direct the vote               NONE

  (iii) sole power to dispose or to direct the disposition of    2,024,130

   (iv) shared power to dispose or to direct the disposition of  NONE

Instruction: For computations regarding securities which represent a right to
             acquire an underlying security see Rule 13d-3(d)(1).

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 / /.

Instruction: Dissolution of a group requires a response to this item.

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

     If any other person is known to have the right to receive or the power
to direct the receipt of dividends from, or the proceeds from the sale of, such
securities, a statement to that effect should be included in response to this
item and, if such interest relates to more than five percent of the class, such
person should be identified.  A listing of the shareholders of an investment
company registered under the Investment Company Act of 1940 or the
beneficiaries of employee benefit plan, pension fund or endowment fund is not
required.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
        THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY

     If a parent holding company has filed this schedule, pursuant to Rule
13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the
identity and the Item 3 classification of the relevant subsidiary. If a parent
holding company has filed this schedule pursuant to Rule 13d-1(c), attach an
exhibit stating the identification of the relevant subsidiary.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

     If a group has filed this schedule pursuant to Rule 13d-1(b)(ii)(H), so
indicate under Item 3(h) and attach an exhibit stating the identity and Item 3
classification of each member of the group. If a group has filed this
schedule pursuant to Rule 13d-1(c), attach an exhibit stating the identity of
each member of the group.

ITEM 9. NOTICE OF DISSOLUTION OF GROUP

     Notice of dissolution of a group may be furnished as an exhibit stating
the date of the dissolution and that all further filings with respect to
transactions in the security reported on will be filed, if required, by members
of the group, in their individual capacity. See Item 5.

ITEM 10. CERTIFICATION

     The following certification shall be included if the statement is filed
pursuant to Rule 13d-1(b):

     By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were acquired in the ordinary course of
business and were not acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such securities and were
not acquired in connection with or as a participant in any transaction having
such purposes or effect.

                                   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.


                                                   FEBRUARY 13, 1998
                                         --------------------------------------
                                                          Date
  
                                            /s/       IRWIN LIEBER
                                         --------------------------------------
                                                        Signature
                                                            
                                             IRWIN LIEBER         CHAIRMAN
                                         --------------------------------------
                                                        Name/Title


                               Page 5 of 5 pages