Hassell Thacher Trall, an American physician, born in Vernon, Tolland co., Conn., Aug. 5, 1812. His parents removed to western New York in his childhood. He studied medicine, and for some time practised the profession in accordance with the standard system. In 1840 he removed to New York, where in 1843 he opened a water-cure establishment; and in 1853 he established a medical school for pupils of both sexes, called the "New York Hygeio-Therapeutic College," since removed to Florence, N. J. He has edited the " Hydropathic Review " and other periodicals devoted to hydropathy and temperance, and has published "Hydropathic Encvclopasdia " (New York, 1852); "Hydropathic Cook Book" (1854); "Prize Essay on Tobacco" (1854); "Uterine Diseases and Displacements" (1855); "Home Treatment for Sexual Abuses;" " The Alcoholic Controversy;" "The Complete Gymnasium" (1857); "Diseases of the Throat and Lungs" (1861); "Handbook of Hygienic Practice" (1865); "The True Temperance Platform" (1864); "Sexual Physiology" (1866); "Water Cure for the Million " (1867); " Digestion and Dyspepsia " (1874); " The Human Voice " (1874); and "Popular Physiology" (1875).