KEEN, WILLIAM WILLIAMS American surgeon, was born at Philadelphia (Pa.), Jan. 19, 1837. He grad uated at Brown university (1859), and Jefferson medical college (1862) ; was made assistant surgeon of the 5th Massachusetts Regiment in 1861 and was acting assistant surgeon U.S. Army (1862-64). After two years' study abroad, he started practice in Philadelphia and conducted the Philadelphia School of Anatomy (1866-75). He was a lecturer on pathological anatomy at Jeffer son medical college (1866-75), professor of surgery at Woman's medical college (1884-89), professor of surgery at Jefferson medi cal college (1889-1907) and professor emeritus (1907). In 1909 he was made 1st lieutenant of the Medical Reserve Corps, U.S. Army, and major in 1917. A specialist in the surgery of the brain and the nervous system, he was a pioneer in performing success fully new and difficult operations in this field. He wrote several surgical and other works, and was editor of many well-known works including Gray's Anatomy and Keen's Surgery.
He wrote Reflex Paralysis and Gunshot Wounds and Other Injuries of Nerves (with Weir Mitchell and Morehouse) (1864) ; Keen's Clinical Charts (187o) ; History of the Philadelphia School of Anatomy (1874) ; Early History of Practical Anatomy (187o) ; Surgical Opera tions of President Cleveland (1893) ; Bicentenary History of the First Baptist Church of Philadelphia (1898) ; Surgical Complications and Sequels of Typhoid Fever (1898) ; Addresses and Other Papers (19o5) ; Animal Experimentation and Medical Progress (1914) ; The Early Years of Brown University, (1914) ; Ether Day Address (1916) ; Treatment of War Wounds (1917) ; Colver Lectures at Brown University on Medical Research and Human Welfare (1917) ; Selected Papers and Addresses (1922).