 Carter became interested in the study of the Coleoptera (beetles and weevils), he joined the Linnean Society of New South Wales and was a member of its council from 1920–1939, and its president in 1925-6.He was joint editor of The Australian Encyclopaedia which was published in 1925-6.He was able to obtain the help of the leading scientists of Australia and their articles formed a large and valuable part of this publication.