The upper half of a face with a skin disease on the forehead; and the lower half of a face with a diseased tongue. Chromolithograph, c. 1888.

Licence: Public Domain Mark

Credit: The upper half of a face with a skin disease on the forehead; and the lower half of a face with a diseased tongue. Chromolithograph, c. 1888. Wellcome Collection. Source: Wellcome Collection.