The family of the Gregorys has been perhaps equally celebrated with the Monros in connection with university life in Scotland, and has certainly furnished it with a larger number of eminent professors. James Gregory, the celebrated inventor of the reflecting telescope, was the first great man of the family, and his publication of a work on optics in 1663 marked an era in that science. His early death in 1675, at the age of 37, deprived science of many brilliant discoveries in prospect. His only son, James, became Professor of Medicine in King’s College, Aberdeen, and died in 1731. His younger son, JOHN GREGORY, the first of the medical Gregorys who became associated with the fame of Edinburgh, was only seven years old when his father died in 1731. After being educated at Aberdeen, under the care of his elder brother, who had succeeded his father, and also under the influence of his cousin, Thomas Reid, the well-known metaphysician, young Gregory entered at Edinburgh in 1741, and studied under the elder Monro, Sinclair, and Rutherford; and at the Medical Society commenced a warm friendship with Mark Akenside, author of the “Pleasures of Imagination.” In 1745-6 he studied at Leyden under Albinus, and having received the M.D. degree from Aberdeen during his absence, he was elected to the chair of philosophy there on his return, and lectured there for three years on mathematics, and moral and natural philosophy. In 1749 he resigned this chair in order to devote himself to medicine, and in 1752 he married Elizabeth, daughter of Lord Forbes, who had beauty, intellect, and wit, and brought him a fortune.