The fifth son of Robert Collum, MD, of the HEIC, who had been Staff Surgeon to Sir Charles Napier, and who afterwards practised as a physician in London. He retired first to Harmondsworth in Middlesex and then to Surbiton. A T Collum was educated at Epsom College, and entered Charing Cross Hospital as Scholar in 1885. He had a brilliant career as a student and was appointed Assistant Demonstrator of Anatomy in his second year. He served as House Surgeon and House Physician, and was elected Medical Registrar in 1892 and Assistant Surgeon in 1894, acting as Joint Demonstrator of Anatomy and Surgical Tutor. He died of septicaemia after a fortnight's illness in Charing Cross Hospital on February 12th, 1896, and was buried in Kensal Green Cemetery. Collum was a sound and practical teacher, with a gift for imparting his knowledge. He was genial, friendly, and scrupulously straightforward both on the football field and elsewhere. He was Treasurer of the Students' Club, and after his death there was a proposal to form an athletic ground in his memory. At the time of his death he held a commission as Surgeon Lieutenant in the Queen's Westminster Corps of Volunteers. Publications: "Malformation of the Alimentary Canal: Atresia at the Middle of the Duodenum." -*Trans. Pathol. Soc.*, 1895, xlvi, 60, 61. "Extrameningeal or Subcranial Haemorrhage, with Report of a Successful Operation." -*Lancet*, 1893, ii, 684.