FIRST AMENDMENT TO LOAN AGREEMENT This First Amendment (the "First Amendment") dated and effective as of February 26, 1999 is an amendment to that certain Loan Agreement (the "Agreement") by and between MCO Properties Inc., a Delaware corporation, MCO...

                            FIRST AMENDMENT TO 
                              LOAN AGREEMENT 
                                      

     This First Amendment (the "First Amendment") dated and effective as of 
February 26, 1999 is an amendment to that certain Loan Agreement (the
"Agreement") by and between MCO Properties Inc., a Delaware corporation,
MCO Properties L.P., a Delaware limited partnership, Horizon Corporation, a
Delaware corporation, Horizon Properties Corporation, a Delaware
corporation and Westcliff Development Corporation, a Texas corporation
(collectively, "Borrower"), and Southwest Bank of Texas, N.A., a national
banking association  ("Lender"), dated October 30, 1998, governing the
establishment of a credit facility in the amount of $14,000,000.00, upon
the terms and conditions as set forth in the Agreement.

     For good and valuable consideration, the receipt of which is hereby
acknowledged, the Borrower and Lender agree as follows:

     1.   General

          a.   All terms used in this Amendment shall have the meanings
     ascribed to them in the Agreement unless otherwise indicated herein.

          b.   The Agreement shall be in full force and effect except as
     specifically provided herein.

     2.   Amendment

          a.   Paragraph 5(a) of the Agreement is hereby deleted and
     restated in its entirety as follows:

               As soon as available, and in any event within forty-five
(45) days following the close of  each calendar quarter (beginning March
31, 1999), Borrower shall deliver to Lender an unaudited financial
statement showing the financial condition of Borrower at the close of each
such quarter and the results of operations during such quarter, which
financial statements shall include, but shall not be limited to, a profit
and loss statement, balance sheet, cash flow statement and such other
matters as Lender may reasonably request; all such quarterly financial
statements shall be certified on the face thereof by the chief financial
officer of Borrower, or any person acceptable to Lender, and shall be
forwarded to Lender with a letter of transmittal from him in which he shall
certify that Borrower is in compliance with all of the affirmative
covenants contained in this Paragraph and further stating that no Event of
Default exists in the performance by Borrower of any of the other terms,
conditions and covenants required under this Agreement to be performed by
Borrower;
               

     All other provisions of the Agreement not specifically amended by the
terms of this First Amendment remain unchanged and in full force and
effect.

     IN WITNESS WHEREOF, the parties hereto have executed this Amendment on
the day and year first written above.



BORROWER:                               LENDER:


MCO PROPERTIES INC.,                    SOUTHWEST BANK OF TEXAS, N.A.
a Delaware corporation                  a national banking association


By:  /S/ J. XXXXXXX XXXXXXXXX           By:  /S/ XXXXXXXXXXX X. XXXXXXX
     J. Xxxxxxx Xxxxxxxxx, Vice              Xxxxxxxxxxx X. Xxxxxxx,
          President                               Vice President



MCO PROPERTIES L.P., 
a Delaware limited partnership

By:  MCO PROPERTIES INC.,
     general partner


By:  /S/ J. XXXXXXX XXXXXXXXX
     J. Xxxxxxx Xxxxxxxxx, Vice
          President


HORIZON CORPORATION, 
a Delaware corporation


By:  /S/ J. XXXXXXX XXXXXXXXX
     J. Xxxxxxx Xxxxxxxxx, Vice
          President


HORIZON PROPERTIES CORPORATION,
a Delaware corporation


By:  /S/ J. XXXXXXX XXXXXXXXX
     J. Xxxxxxx Xxxxxxxxx, Vice
          President



WESTCLIFF DEVELOPMENT CORPORATION,
a Texas corporation


By:  /S/ J. XXXXXXX XXXXXXXXX
     J. Xxxxxxx Xxxxxxxxx, Vice
          President