"Head and skull of malformed infants...," from Joseph Maclise's "Surgical Anatomy," 1856

"Head and skull of malformed infants; conjoined twins, bilateral cleft lip and holoprosencephaly," from Joseph Maclise's book Surgical Anatomy, published in London in 1856.

Just one of the many, many treasures to be found at the University of Toronto's wonderful online exhibit "Anatomia: Anatomical Plates from the Thomas Fisher Rare Book Library."