Underside view of a plaster cast of Laura Bridgman's brain with a metal stem protruding from the back. At the time of Bridgman's death phrenology was still an accepted science, and of great interest to Samuel Gridley Howe. See also Anatomical observations on the brain and several sense-organs of the blind deaf-mute, Laura Dewey Bridgman, by Henry H. Donaldson, 1890
