 His paper on British marine mollusca, his presidential address, was the most cited of his many writings, which were mainly on British and Indian mollusca.He became a member of the Malacological Society of London in 1919, later becoming its editor, and serving as President (1939–1942).He was a member of the Linnean Society from 1935 onwards, serving on the council from 1943 and as Vice President (1945–1947).