John Coivolly, an English physician and author, born at Market Rasen, Lincolnshire, in 1795, died at Han well, March 5, 1866. He graduated at the university of Edinburgh in 1821; was professor of medicine in the university of London from 1828 to 1831, and consulting physician to the lunatic asylum at Hanwell from 1839 to 1843, and to that for idiots at Earlswood. He acquired distinction by his adoption of the system of non-restraint in the treatment of the insane. He invited Dr. Guggenbiihl to England, and after examining the institution for cretins near Interlaken and the schools of Seguin and Voisin in Paris, he procured the establishment of the temporary school for idiots at Colchester and of the royal asylum at Surrey, of both of which he became an active manager. Besides contributions to current medical literature, he published "Inquiry concerning the Indications of Insanity " (1830), "Construction and Government of Lunatic Asylums" (1847), "Treatment of the Insane" (1856), and "Study of Hamlet" (1863).