BLAKE, Clarence John, physician, born in Boston, Massachusetts, 23 February 1843. He studied at Lawrence scientific school, and was graduated at the Harvard medical school in 1865, after which he spent some time abroad and received the degree of "obstetrical magistrum" at Vienna in 1867. He began to practice in Boston in 1869, and has devoted his attention principally to diseases of the ear. In 1871 he became aural surgeon in the Massachusetts charitable eye and ear infirmary, and during the same year was appointed instructor in otology in Harvard medical school. He is a member of medical and scientific societies, and was president of the American otological society in 1876-'7. Dr. Blake has invented several surgical instruments for use in the treatment of diseases of the ear, principally the membrana tympani phonautograph. He has published papers on subjects in acoustics and otology, and was the editor of the "American Journal of Otology" in 1879-'82, and also of Rtidinger's "Atlas of the Osseous Anatomy of the Human Ear" (Boston, 1870).