Securities and Exchange Commission

450 Fifth 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 an officer of  DuPont unless it is earlier specifically revoked by me.





Very truly yours,





/s/ Ellen J. Kullman

Executive Vice President







June 20, 2006