Causes.--These are obscure and not understood. A low state of the system is usually found. PHYSICIANS' TREATMENT for Blister Disease.--General treatment should be given. Arsenic is the best remedy and can be given in the form of Fowler's solution, five drops after meals at the beginning far an adult. This should be increased until some poisonous symptoms, such as bloating in the face is produced. Elixir Quinine, Iron and Strychnine is good as a tonic, one teaspoonful after meals. Regulate the diet, give nourishing and easily digested food. Local Treatment.--Puncture the blisters. Then put on a mild ointment like vaselin; bran and starch baths can be given in some cases. The length of the time of the disease is uncertain. THE ITCH DISEASE. (Psoriasis) (not Common Itch). Definition.--This is a chronic inflammatory disease of the skin, in which there appear upon the skin thick, adherent, overlapping, scales of a shiny, whitish color, and these are situated upon a reddish, slightly raised and sharply outlined (defined) base. Symptoms.--They begin as small reddish spots, sharply defined against the healthy skin. They may be elevated slightly and soon became covered with whitish pearl colored scales. If the scales are picked off, there is left a smooth red surface, and from this, small drops of blood ooze out. No watery or pus-like discharge escapes at any period of this disease. These spots extend at the circumference (periphery), reaching the size of the drops, or of the coins, or they may run together and form ring-shaped, or crooked wavy lines of patches, with a center that is healing up. A few scattered spots may be present, or large areas may be involved. In rare cases the whole skin is affected. These spots or patches may occur an any part of the body, but involve the extending part of the limbs, especially the elbows and knees. There may be slight itching present at times. Course of the Disease.--It is chronic; patches may continue indefinitely or they may disappear in one place, while new crops appear elsewhere. This disease usually appears far the first time between the ages of ten and fifteen; it may then return at various intervals during a lifetime. It is usually worse during the winter. [80 MOTHERS' REMEDIES.] Causes.--Are usually unknown, it may occur in all classes and kinds of people. PHYSICIANS' TREATMENT for Itch Disease.--Remedies for the general symptoms are demanded. The general health must be looked after. Stimulating foods and drinks and the use of tobacco are forbidden. Arsenic in the form of Fowler's solution from three to ten drops three times a day; or the arsenious acid in pills of 1/50 of a grain three times a day. This medicine must not be used in the acute form, but only in chronic cases.