Exhibit 23.1



                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTS


As independent public accountants, we hereby consent to the incorporation of our
reports incorporated by reference in this Form 10-K, into the Company's 
previously filed Registration Statement on Form S-8 dated September 9, 1993 and 
September 13, 1993, and Form S-3 dated February 13, 1995.

ARTHUR ANDERSEN LLP



The Woodlands, Texas
March 26, 1997