Hugh Cairns, Military Hospital, St Hugh's, Oxford to L T Poole, Hyde Park Gate Says that Florey has shown him the draft memo of instructions for the use of penicillin in severe war wounds as a prophylactic against gas gangrene and sepsis - understands it is likely to be modified - says it might be liable to serious misinterpretation in present form - gives detailed criticisms, emphasizing need for proper surgery. 25 May 1944