LOUSE, Disease of the Skin Produced by.--This is a disease of the skin produced by an animal parasite, the pediculus or louse. There are the head louse, pediculus capitis; the body louse, pediculus corporis; the pubis, (about the genitals) pediculus pubis. The color of lice is white or gray. They multiply very fast, the young being hatched out in about six days and within eighteen days are capable of propagating their same species. The nits are glued to the hair with a substance which is secreted by the female louse. HEAD LOUSE or Pediculus Capitis. Treatment.--The symptoms are very apparent. Apply pure kerosene, rub it into the hair thoroughly. It can be mixed with an equal part of balsam of peru. It should be left on the scalp for twelve to twenty-four hours and then removed by a shampoo. Other remedies that can be used are, tincture of staphisagria (stavesacre), this can be made into an ointment; or ointment of ammoniated mercury. The dead nits are removed from the hair by dilute acetic acid or vinegar. Cutting the hair is not usually required. An infusion of quassia is good as a wash. Body Louse or Clothes Louse (Pediculus Corporis).--This parasite lives in the clothes. It is apt to be found in the folds or seams, especially where the clothes come in close contact with the skin, as about the neck, shoulders and waist. This creature visits the body for its meal. They may produce different kinds of skin troubles like eczema, boils, etc. PHYSICIANS' TREATMENT for Lice.--Destroy the lice and their eggs (ova) by thoroughly baking or boiling the clothing. The irritated skin can be healed by soothing applications like vaselin, and oxide of zinc. (Pediculus Pubis).--Lice on the hair of the pubis or about the genitals. This is the smallest parasite of the three varieties, and it attaches itself firmly to the hair with its head buried in the follicular openings, and it is removed with great difficulty. PHYSICIANS' TREATMENT for Lice.--1. Ointment of mercury, blue ointment. This is to be used frequently. It is rather unclean and may create a severe inflammation so be careful of it. 2. Solution of corrosive sublimate, from one to four grains to one ounce of water. This is good and can be used once or twice a day; rub thoroughly into the parts. It will cause redness and inflammation may follow if too much is used. It is very effective. Kerosene with an equal quantity of balsam of peru is a good remedy. [SKIN DISEASES 79] BLISTER DISEASE, (Pemphigus).--This is an acute or chronic skin disease in which there are blisters of various sizes and shapes, and these usually occur in crops. Symptoms.--The disease may attack any part of the body. The blisters range from the size of a pea to a large egg. They contain at first a clear fluid, which soon becomes cloudy and looks more or less like pus. They last several days and then dry up. They do not rupture of themselves very often. It is not catching.