Founder of Edinburgh Medical School, born of Scotch parentage in London; studied there, and at Paris and Leyden, and was appointed lecturer on Anatomy by the Surgeons' Company at Edinburgh in 1719; two years later he became professor, and in 1725 was admitted to the University; he was a principal promoter and early clinical lecturer in the Royal Infirmary, and continued his clinical work after resigning his chair to his son Alexander; he wrote several medical works, and was a Fellow of the Royal Society; he was called primus, to distinguish him from his son and grandson, who were called respectively secundus and tertius, and were professors of Anatomy in Edinburgh like himself (1697-1767).