Entered King’s College, Aberdeen, in 1810; apprenticed to his uncle in Elgin in 1812, then became a clinical pupil at the Aberdeen Infirmary. He entered Guy’s and St Thomas’s Hospitals in 1815 and studied anatomy and surgery under Joshua Brookes at the Blenheim Street School, and midwifery under Merriman at the Middlesex Hospital. In 1816 he gained the second prize in anatomy and surgery at a viva voce examination by Sir Astley Cooper. After qualifying MRCS he joined the Hon East India Company’s service on the Bombay side, and on reaching India in August, 1818, found himself in the midst of a great cholera epidemic. His detailed observations as he travelled from Nagpore to Poonah and Tanneh were published in the *London Journal of Medicine* in 1849. He served with the 7th Regiment in Bengal in 1819 and noted the prevalent forms of tropical fever, serving through the Kaira campaign and being present at the siege of Kittore. He was diligent in acquiring the local vernacular and so came to act as vaccinator. He published “Observations on Guinea Worm” in the *Calcutta Medical Transactions*, i. In 1826 Mount Stuart Elphinstone appointed him Residency Surgeon at Saltara, which gave him leisure to pursue studies in Persian, from which he translated the *Political and Statistical History of Gujerat*, published by the Oriental Translation Fund in 1835. In 1832 on his way home he visited Egypt, including Nubia, and Syria, where he was received by Lady Hester Stanhope at Joorie. In 1834 he gave evidence before the Parliamentary Committee on Communications with India in which he supported Waghorn’s recommendation of the route by Egypt and the Red Sea as better than that overland by Aleppo and the Euphrates. On his return he acted as Surgeon to both the European and Native Hospitals in Bombay, and was Chief Medical Attendant of the Commander-in-Chief, Lord Keane. Later he was promoted to be Surgeon of a Division of Madras troops, and then Physician General with a seat on the Medical Board. On his retirement in 1847 he settled in London at 1 Brook Street, as the chief authority upon the diseases of Europeans in hot climates, and was an active member of the Medical Societies. He became President of the Harveian Society, Foreign Secretary for India of the Epidemiological Society, a Lecturer on Military Surgery and Tropical Medicine at St Mary’s Hospital, also senior Vice-President, Treasurer, and in 1863 Lettsomian Lecturer at the Medical Society. He died on July 10th, 1864, at Gerrard’s Cross; his wife predeceased him, leaving two children. In Bird’s *Contributions to the Pathology of Cholera*, 1849, there is no mention of infection through drinking water. In his Introductory Address to the Epidemiological Society in 1854 under the title “The Laws of Epidemics and Contagious Diseases” he quotes from Caius: “For as hereafter I will shew, and Galen confirmeth, our bodies cannot suffer anything or hurt by corrupt and infectious causes, except there lie in them a certain matter prepared apt and like to receive it.” And in a debate, “and though he was not prepared to deny altogether the truth of Dr Snow’s views that it could be multiplied through the medium of water, impregnated with the poisonous dejecta of cholera patients, he could not believe that such medium of communication had more than a partial effect.” – *Lond. Jour. of Med.*, 1849, i, 1082. His most serviceable address was: “The Military Medical Instruction of England compared with that of France, and its insufficiency for training Army Medical Officers” – being the introductory lecture to a Course of Military Surgery delivered in the School of St Mary’s Hospital, 1855.