Homs

These may be sebaceous in origin; usually, however, they are made up of hypertrophied papillae, each containing one or more vessels and being covered by epidermis; on section they have a granular texture pierced with small orifices, and when dry, numerous concentric cracks. These orifices are the sections of little blood-vessels; a clear amber-colored circular area surrounding each of the vessels, which are separated by the general granular structure of the mass, incapable in the compact part of the horn of being reduced to in ultimate original elements. The central parts of the horn, are more compact and less vascular than the outside.