October 6, 1951.

Dear Benham

Culture T-1205 from a recent shipment of F. coli proves to be
interfertile with our testers. Could you dig up any f@urther relevant
information on 1t?

The two urease~producing strains could not, unfortunately, be
satisfactorily tested owing to their high level of resistance to
streptomycin. I have however preserved them with our stock oumbers
W~1161 and 1162 for future biochemical study, or to return them to
you if you should wish.

Yours with thanks,

J. Ledarbarg