Photo by Fr. Opitz, Moscow, Russia, 1890s 6.5 х 10.7 cm Autographed on back Ivan Mikhailovich SECHENOV (1829 —1905) was Russian physician, biologist, chemist, educator, one of the founders of Russian psychiatry and the founder of a school of physiology. Sechenov was the author of a classic, Reflexes of the Brain. SECHENOV, I. M. (Сеченов И.М.)