Securities and Exchange Commission

450





Street, N.W.

Judiciary Plaza

Washington, DC 20549



Ladies and Gentlemen:



I hereby authorize Mary E. Bowler, Corporate Secretary and Corporate

Counsel, or any Assistant Secretary, or their respective successors in office, to sign and

file on my behalf SEC Forms 3 , 4 and 5 or any other SEC forms relating to changes in

beneficial ownership of securities of E. I. du Pont de Nemours and Company. This

authorization shall remain in effect as long as I am a director of unless it is

earlier specifically revoked by me.



Very truly yours,



Robert A. Brown

Director