Born at Dorchester in 1843, and therefore ten years senior to his brother, Sir Frederick Treves, Bart (qv). He was educated at St Thomas's Hospital, where he was House Surgeon. He was then appointed Resident Surgeon at the Royal Sea-Bathing Infirmary, Margate, and thus began a long and honourable connection with that town. In 1870 he started in private practice in partnership with William F Hunter and William H Thornton, JP. In 1872 he was made Surgeon to the Royal Sea-Bathing Infirmary and held office until 1901, when he became Consulting Surgeon. He was early appointed District Medical Officer, and later Medical Officer of Health, and held this office for some twenty years. On the termination of his partnership he withdrew almost entirely from general practice and devoted himself to surgery, especially to that of tuberculosis, for which he had special opportunities. In this he was conspicuously successful. The wide reputation enjoyed by Margate as a resort for the tuberculous and as a haven for the convalescent is due in very large measure to Treves. He founded the Margate Cottage Hospital, and was successively its Surgeon, Consulting Surgeon, and President. Treves practised for many years at 32 Dalby Square, latterly in partnership with William Greenwood Sutcliffe, his neighbour, and with his son, Frederick Boileau Treves. After a period of ill health, which caused him to withdraw from his manifold activities, he died on October 14th, 1908, and was buried in Margate Cemetery. Publications:- "The Condition of the Circulation in Scrofula." - *Lancet*, 1871, i, 568. "Excision of Knee-joint, and the Condition of Rest Necessary to be Maintained." - *Ibid*, ii, 463, 508. "Treatment by Excision of Masses of Scrofulous Glands." - *Ibid*, 1888, ii, 105. *On the Diagnosis and Treatment of Scrofulous Glands*, 8vo, London, 1889. *Present Methods of Treating Tuberculosis (Section 5): The Surgical Aspect*, 8vo, London, 1903.