Head and skull of malformed infants; conjoined twins, bilateral cleft lip and holoprosencephaly, shown in isolation in 10 numbered illustrations. Each condition is shown with intact infant heads, and with skull, shown in isolation. 2 examples of conjoined twins, fused in the midline of the head. 2 examples of bilateral cleft lip. 1 example of holoprosencephaly. Anterior views.