DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH

NATIONAL COLLECTION OF INDUSTRIAL BACTERIA
Telephone: MO.Lresey 1380
CHEMICAL RESEARCH LABORATORY

Telegrams : CHEMISTRY, TEDDINGTON

TEDDINGTON
Any reply to this letter to
be addressed to MIDDLESEX
THE DIRECTOR
Our Hef: WSG/66/30/7 5th November, 1956
Dear Sirs,

ve have had a request for your K,12 strain of &, coli, used for the
determination of gluconic acid.

If you would be kind enough to deposit this strain in the National
Gdiection of Industrial Bacteria we should be very grateful.

Yours sincerely,
W.S. GREAVES

E,L. Tatum & Joshua Lederberg,
Dept. of Botany and Microbiology,
Yale University,
New Haven,
Connecticut,
WM U.S.A.