ACCESS RESTRICTED. During the Second World War, Dixon's research was largely concerned with the biochemistry of chemical warfare agents. He directed an 'extramural research team' under the Chemical Defence Research section of the Ministry of Supply which studied lachrymators, dialkyl fluorophosphonates, Lewisite and mustard gas and related compounds. His team included at various times: D.M.M. Needham, K. Bailey, R. Hill, J.F. Danielli, P.D. Mitchell, E.C. Webb, G.D. Greville, J.A. Cohen, R. van Heyningen, C. Lutwak-Mann, and J.F. Mackworth. The results of the research were presented to the Ministry in 33 reports, an almost complete sequence of which is presented here. Much of the work, 'classified' at the time, was published after the war and contributed greatly to the postwar development of the chemical study of enzymes. See memoir by R.N. Perham, 'Biographical Memoirs of Fellows of the Royal Society', 34 (1988), 111, 122-123.