Scotch neurologist, born at Aberdeen, in 1843; graduated at the university of that city, with high honors, in 1863; gained, the same year, the Fergusson scholarship in classics and philosophy, open to students of the four Scottish universities. He studied philosophy in Heidelberg; and medicine in Edinburgh, graduating in 1870. In 1872 he was appointed professor of forensic medicine in King’s College, London; and, in 1889, was inducted into the chair of neuropathology, which had been specially provided for him by the governing body of the college. He received many medals for his researches on the brain. Dr. Ferrier’s researches have increased our knowledge of the brain perhaps more than those of any other investigator. A prominent advocate of vivisection, he incurred the special hostility of the anti-vivisectionists in connection with his operations on living animals, including apes. His original researches were mostly conducted, at first, at the West Riding Asylum (see Sir James Crichton-Browne). Dr. Ferrier is one of the editors of Brain, and has published The Functions of the Brain (1876); The Localization of Cerebral Diseases (1878); Lesions of the Regions of the Cerebral Hemispheres (1885).