Exhibit 10.08

                          FOURTH LEASE AGREEMENT


  STATE OF TEXAS

  COUNTY OF DALLAS

        This  Fourth Less.  Amendment  (this  "Amendment")  is  made  and
  entered  into by  and  WESTERN ATLAS  INTERNATIONAL, INC.,  a  Delaware
  Corporation  "Landlord". And  CARRINGTON  LABORATORIES, INC.,  a  Texas
  corporation  ("Tenant"),   effective  as  of   August  31,  1999   (the
  "Effective  Date")  Capitalized Terms  used  herein and  not  otherwise
  defined shall  have the meanings  assigned to such  terms In the  Lease
  (hereinafter defined).

                                WITNESSETH:

        WHEREAS. Landlord  and  Tenant entered  into that  certain  Lease
  Agreement dated  effective August 30, 1991  (as amended, the  "Lease"),
  pursuant to which Landlord agreed to lease to Tenant and Tenant  agreed
  to Lease from Landlord  approximately 21.733 square feet of space  (the
  "Premises") In  the building located at  1300 East Rochette  Boulevard,
  Irving, Texas (the "Building"; and

        WHEREAS the Lease  was previously amended  by that certain  First
  Lease  Amendment between  Landlord  and Tenant  dated April  16,  1992,
  Increasing  the area  of the  Premises to  approximately 23,284  square
  feet of space; and

        WHEREAS, the Lease was previously amended by that certain  Second
  Lease Amendment between  Landlord and Tenant dated September 23,  1993,
  increasing  the areas of  the Premises to  approximately 24,146  square
  feet of space: and

        WHEREAS, the Lease was previously  amended by that Certain  Third
  Lease  Amendment between Landlord  and Tenant dated  December 1,  1994,
  extending  the,  term of  the  Lease to  January  31, 2000  and  making
  certain other changes to the original Lease;

        WHEREAS, the  Lease currently contains  an option  to extend  the
  term for  a period of five  (5) calendar years  from February 1,  2000,
  though January 31, 2005 which was recently exercised by Tenant and

        WHEREAS, Landlord and  Tenant have agreed to  amend the Lease  to
  reduce the  length of the renewal term to  eighteen (18) months and  to
  set the amount of Minimum Rent applicable during the renewal term, and

        WHEREA,  Landlord and Tenant have  agreed to make certain  other,
  changes in the terms and provisions of the Lease as hereafter  provided
  and desire to execute  this Amendment to set forth in writing all  such
  changes;
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        NOW, THEREFORE KNOW ALL MEN BY THESE PRESENTS:

        THAT, for and  in consideration of  the premises and  of Ten  and
  No/100 Dollars ($10.00) and other good and valuable consideration  paid
  by Tenant to Landlord,  the receipt and sufficiency of which are hereby
  acknowledged,  Landlord end  tenant  do hereby  covenant and  agree  as
  follow.:

        1.  Notwithstanding anything contained in the Lease or  Tenant's.
  prior election  to extend the Lease Term for  five (5) years, the  Term
  of the  Lease is hereby amended  so that the Lease  Term shall end  on,
  July  31. 2001.   Landlord and Tenant  hereby agree  that Tenant  Shall
  have no  further right to extend the Lease  Term beyond July 31,  2001,
  and Tenant hereby waives any and all such rights.

        2.  Minimum Rent for the Premises during period from February  1,
  2000, through July 31, 2001, shall be Forty Thousand Two Hundred  Forty
  and 33/100 Dollars per month.

        3.  Commencing February 1, 2000, there shall no longer be a "Base
  Year" under  the Lease and  Tenant shall no  longer be responsible  for
  payment of  Operating Costs.   Accordingly, Section 8  of the Lease  is
  hereby  deleted in  its entirety  and the  Lease is  hereby amended  to
  delete all reference therein to a "Base Year" or "Operating Costs."

        4.  Section 30  of the  Lease is hereby  amended by deleting  the
  phrase 15O%  of the monthly rent contained  in the fifth line,  thereof
  and replacing it with the phrase "300% of the monthly rent."

        5.  During the remainder of the Term, Tenant agrees to use  "best
  management  practices'   with  respect  to  the  hazardous  waste   and
  hazardous materials  that it handles in the  Premises, as such term  is
  used and  prescribed by law U.S.  Environmental Protection Agency,  the
  Texas  Natural Resources  Conservation  Commission, the  National  Fire
  Protection  Association and  the U.S.  Occupational Safety  and  Health
  Administration

        As hereby expressly amended, the Lease is ratified and  confirmed
  to be in full force and effect.

        IN WITNESS  WHEREOF,  the parties  have executed  this  Amendment
  effective as of the date first set forth above.

                                       WESTERN ATLAS INTERNATIONAL, INC.



                                       By: /s/
                                           -----------------------------
                                       Name:   C.S. Finley
                                       Title: Vice Presldent


                                       CARRINGTON LABORATORIES, INC.

                                       By: /s/
                                           -----------------------------
                                       Name:  Carlon E. Turner, Ph. D.
                                       Title: President & Chief
                                              Executive Officer