CANNIFF, William, Canadian physician, born near Belleville, Ontario, in 1830. He was educated at Victoria College, Cobourg, studied medicine at the Toronto school of medicine, and at New York University, and in London, England, and took the degree of M. R. C.S. In 1856 he passed the army medical board, and was on duty for a time during the Crimean war in the royal artillery. Then he returned to Canada., and was called to the chair of general pathology in Victoria College, and afterward became professor of surgery in the same institution. During the civil war in the United States he visited the hospitals at Washington, and was for a time with the Army of the Potomac. After his return to Canada he resumed the practice of his profession at Belleville, but finally removed to Toronto. Dr. Canniff was one of the originators of the " Canada First" movement, has been president of the medical section of the Canadian institute, was invited by the medical faculty of Paris to attend the International medical congress as a delegate to that City in 1867, and, with others, formed the Canadian medical association of Quebec in October, 1867. He has written for medi-cad and other periodicals, and is the author of the " Principles of Surgery" and the " Settlement of Upper Canada."