Every now and again these hairy growths are noticed to present themselves on some portion of the eyeball of a horse.

For the most part they are congenital formations, but very rarely they do not appear until some time after birth.

In those cases which are congenital this growth presents itself as an aberration of development. That is, a germ of skin appears in some part of the eyeball where skin does not and should not occur.

Fig. 255. - Cutaneous-Piliferous Growth from the Cornea.

They cause the animal a good deal of annoyance and suffering as a result of their presence, and it is only by removing them with the knife that this can be remedied.

For some reason or other these cutaneous growths are most often seen in oxen and in dogs, and they are less frequently noticed in the horse, in sheep, and in the human subject.

A case is recorded as occurring in a bullock in the Veterinary Record, vol. xxi, p. 235, and other cases are referred to in the Journal of Anatomy and Physiology, vol. xiv, p. 143, and also in the Veterinarian, vol. xxvi, p. 777.