90 South Cascade, Suite 1200 P.O. Box 1595 Colorado Springs, CO 80901-1595 719 475 9850 Fax 719 520 0350 September 5, 1996 GRANT THORNTON GRANT THORNTON LLP Accountants and Management Consultants The U.S. Member Firm of Grant Thornton International Securities and Exchange Commission Washington, D.C. 20549 RE: Discovery Technologies, Inc. File No. 0-18606 Dear Sir or Madam: We have read Item 4 of the Form 8- K of Discovery Technologies, Inc. dated August 27, 1996, and agree with the statements contained therein as they pertain to Grant Thornton LLP. Very truly yours, /s/ Grant Thornton LLP