Pioneer Hi-Bred International, Inc. Letterhead] January 21, 1998 Mr. Roger Arrington E. I. du Pont de Nemours and Company Barley Mill Plaza P.O. Box 00011 Wilmington, DE 19880-0011 Dear Roger: We hereby consent to the purchase of 100 shares each by...

             [Pioneer Hi-Bred International, Inc. Letterhead]


                                          January 21, 1998



Xx. Xxxxx Xxxxxxxxx
E. I. du Pont de Nemours and Company
Barley Mill Plaza
P.O. Box 00011
Wilmington, DE  19880-0011

Dear Xxxxx:

               We hereby consent to the purchase of 100 shares each by
Xxxx Xxxxxxxx and Xxxx Xxxx. Such shares will not count in the Ownership
Cap for purposes of Section 6.6 of the Investment Agreement dated as of
August 6, 1997, between E. I. du Pont de Nemours and Company and Pioneer
Hi-Bred International, Inc.

                                            Sincerely,


                                            /s/ Xxxx XxXxxxxxxxxx
                                            Xxxx XxXxxxxxxxxx