THEOPHILUS, an eminent physician, born at Geneva, March 15th 1622. He took his degree in physic in 1643, after he had gone through most of the famous universities, and was for some time physician to the duke of Longueville. Meanwhile his skill in his profession got him considerable practice; but being seized with deafness, it obliged him to retire from business, which gave him leisure to collect all the observa- tions he had made during a practice of 40 years. He wrote, 1. Polyathes, sive Thesaurus Medico-practicus, 3 vols. folio. 2. Labyrinthi Medici extricati. 3. Medicinae Septentrionalis Collatio; and other works.