HYPERPLASIA OF THE SKIN.

Productive inflammations and tumors of the skin are common in domestic animals but as they are essentially surgical lesions, they will be better considered under that head. We may name papilloma, warts, fibroma, melanoma, epithelioma, sarcoma, adenoma, carcinoma, dermoid cysts. Parasitic and microbian diseases of the skin will be found under their respective headings.