Arthur then studied Natural History (under his own father) at Aberdeen University, graduating MA in 1911.
In the First World War he served as a Lt Colonel in the Argyll and Sutherland Highlanders . He received a Military OBE for his services.
After the war (from 1919) he became a medical researcher and remained in this role until retiral in 1957. He was created a Commander of the Order of the Bath for this work in 1933 by King George VI and knighted by Queen Elizabeth II for this work in 1953.[5] In 1962 the Royal Society 's Buchanan Medal for services to medicine.[6]
In 1938 he was elected a Fellow of the Royal Society of Edinburgh . His proposers were James Ritchie , Sir David Wilkie (surgeon) , Charles Henry O'Donoghue and William Kalman .[7]
He was president of the British Ornithologists' Union (BOU) from 1948 to 1955. He was President of the Zoological Society 1946 to 1950. He was Chairman of the British Trust for Ornithology (BTO) from 1941 to 1947 and won the Trust's Bernard Tucker Medal in 1957. In 1959 he was awarded the BOU's Godman-Salvin Medal .
He died at Queen Mary's Hospital in Roehampton on 9 June 1977.
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