Born at Bradford, Yorkshire on 23 August 1852, the seventh child and third son of James Douglas, MD, LSA in practice there, and Sarah Herbert Rodgers, his wife, daughter of James Rodgers of Edinburgh and Kilmarnock. He was educated at The Grange, Thorp Ash, and St George's Hospital, London. He qualified in 1873, and after serving as surgeon to the Leicester Provident Dispensary from 1879 to 1886 he was elected in that year surgeon to the Royal Infirmary, Leicester, an office which he held till 1911, when he retired as consulting surgeon. He had taken the Fellowship in 1888. During the war of 1914-18 Douglas returned to hospital duty, serving with the rank of lieutenant-colonel, RAMC(T) at the 5th Northern General Hospital, Leicester. Douglas was a referee under the Workmen's Compensation Act. He was president of the Midland branch of the British Medical Association in 1901, and vice- president of the section of surgery at the Association's annual meeting of 1905 at Leicester. After retiring from practice Douglas lived at Silchester, East Cowes, Isle of Wight, and latterly at 15 Marston Ferry Road, Oxford, where his son was professor of general metabolism. Douglas married in 1878 Louisa Bolitho Peregrine, daughter of Thomas Peregrine, MD, MRCP, of Halfmoon Street, London, W. Mrs Douglas survived him with a daughter and a son, Professor Claude Gordon Douglas, CMG, MC, FRS, DM, Fellow of St John's College, Oxford. Their elder son, James Sholto Cameron Douglas, DM Oxford, professor of pathology in the University of Sheffield, died in 1931 (*Brit med J*. 1931, 2, 923; *Lancet*, 1931, 2, 1047). Douglas died on 9 June 1945, ten weeks before his ninety-third birthday. A successor in the surgeoncy at Leicester Royal Infirmary, R S Lawson, had died on 27 May. Mrs Douglas died on 6 July 1950 at Oxford, in her ninety-fourth year.