The second son of William Rendle (qv), Medical Officer of Health for St George the Martyr, Southwark, London, SE, of whom there is an account in the *Dictionary of National Biography*. Richard Rendle studied at Guy's Hospital, where he held the posts of House Surgeon, Surgical Registrar, and Demonstrator of Anatomy. He was afterwards House Surgeon at the Seamen's Hospital, Greenwich, and at the Waterloo Road Royal Infirmary for Women and Children, and then Resident Medical Officer at the Brompton Consumption Hospital. Resigning that post, he was put in medical charge of an emigrant ship to Australia, where he remained. He held several posts there: Resident Medical Officer of the Government Hospital, Fremantle; Medical Officer of the Lying-in Hospital and Hospital for Children; also Health Officer at Brisbane. In later years he practised at Taringa, near Brisbane, and died at Taringa, Queensland, on August 10th, 1907. The mask for the administration of bichloride of methylene was named after him in the instrument-makers' catalogues.