Born, 1849; educated Trinity College, Toronto, University of Toronto, 1868-1870, McGill University, Montreal, 1870-1872, University College London, 1872-1873; Professor of the Institutes of Medicine, McGill University, 1874-1884; Professor of Medicine, University of Pennsylvania, 1884-1889; Professor of Medicine, Johns Hopkins University, Baltimore, 1889-1904; Professor of Medicine, University of Oxford, 1904-1919; elected to the Royal College of Physicians, 1884, and to the Royal Society, 1898; died, 1919.
Publications: The cerebral palsies of children (London, 1889) The principles and practice of medicine (Edinburgh, 1891); On Chorea and choreiform affections (London, 1894); Lectures on Angina Pectoris and allied states (New York, 1897); Cancer of the stomach. A clinical study (London, 1900); Aequanimitas. With other addresses to medical students, nurses and practitioners of medicine (London, 1904); The student life. A farewell address to Canadian and American medical students (Oxford, 1905); Counsels and ideals from the writings of William Osler (Oxford, 1905); The growth of truth, as illustrated in the discovery of the circulation of the blood (London, 1906); Science and immortality (London, 1906); An Alabama student, and other biographical essays (Oxford, 1908); Thomas Linacre (Cambridge, 1908); The treatment of disease (London, 1909); Incunabula medica. A study of the earlier printed medical books, 1467-1480 (London, 1923); The tuberculous soldier (London, 1961).