OTIS, Fessenden Nott, physician, born in Ballston, New York, 6 May, 1825. He was educated at the academies of Fairfield and Amsterdam, New York, and studied medicine in the University of the city of New York and in New York medical college, where he was graduated in 1852. He was a surgeon on the United States mail and Pacific mail steamers till 1861, and then a police surgeon in New York city till 1872, serving as president of the medical board of the police department in 1870-'2. From 1862 till 1870 he was attending physician to the Demilt dispensary, he was clinical lecturer at the College of physicians and surgeons from 1862 tilt 1871, and since 1871 has been clinical professor of genitourinary diseases. He was president of the medical board of Strangers' hospital in 1871-'3, has been visiting surgeon to Charity hospital since 1874, and twice president of the medical board, and is consulting surgeon to various hospitals. He was president of the American dermatological society in 1872. Dr. Otis invented in 1871 the urethrometer, and the dilating urethrotome, which he perfected in 1872 and 1875, respectively, he is the inventor also of the dilating catheter introduced in 1874, the prostatic catheter and prostatic guide, the cold-water coil, the ready aspirator, which was introduced in 1875, and a simplified evacuator for removing stone from the bladder after lithotrity, introduced in 1883 and perfected in 1888. He has published "Lessons in Drawing, Studies of Animals and Landscape "(2 vols., New York, 1849-'50) ; "Tropical Journeyings" (1856) ; and "History of the Panama Railroad and its Commercial Connections " (1860). His contributions to medical literature comprise, besides numerous articles and pamphlets, " Stricture of the Male Urethra, its Radical Cure" (New York, 1878; 2d ed., New York and London, 1882) ; " Physiology of Syphilitic Infection" (1881); and "Genito-Urinary Diseases and Syphilis " (1883; students' ed., 1886).