Letter from Howard Walter Florey to R V Christie Cannot attend meeting (of Penicillin Trials Committee) - has asked to be excused from attendance - asks Christie to raise his (Florey's) memo on methods of applying penicillin to wounds - wants cellophane tubes - Colonel Jeffrey will try out these.On verso is a letter from Christie to Florey, 11 December 1943 - gives arrangements for the next meeting of the Working Sub-Committee of the Penicillin Trials Committee 14 December 1943