ALOPECIA CONGENITA. CONGENITAL BALDNESS.
Cases of this kind have been met with in foals and calves, which were born entirely bald or with only a few thin delicate hairs scattered over the surface. In a calf observed by the author, and which lived for several months, the body was almost absolutely bald, and the mouth remained edentulous, a coincidence which has been observed in other cases. The teeth belong to the same class of embryonic tissues as the epidermis, and a failure in the development of the one is likely to entail a corresponding failure of the other. Schneidemühl observed that the few hairs present in such cases were especially delicate and brittle.