This disease is of rare occurrence in cattle. In it, the mucous membrane lining the larynx is in a very irritable condition; the least pressure upon the parts affected causes intensely excruciating pain; the respiration becomes quick, painful, and laborious; the animal often appears to be hungry, yet does not eat much, in consequence of the pain occasioned by the act of swallowing. _Treatment._--Apply to the throat externally strong mustard, mixed, with equal parts of aqua ammonia and water, to a thin paste, every hour, until it produces an effect upon the skin; sponging the parts each time with warm water before applying the mustard. The animal should not be bled. Give upon the tongue, or in drink, half-drachm doses of nitrate of potassa, every three or four hours, until relief is obtained. If suffocation threatens, the operation of tracheotomy is the only resort. [Illustration: AN ABERDEENSHIRE POLLED BULL.] Cloths saturated with cold water, wrapped around the neck so as to cover the larynx, frequently afford relief. A purgative will also be found useful. LICE. Cattle are very subject to lice, particularly when they are neglected, half-starved, and in poor condition. Good care and good feeding--in connection with the treatment recommended in mange, to which the reader is referred--will comprise all that is requisite. MANGE. Mange, or leprosy, is one of the most unpleasant and difficult diseases to manage of all the ailments to which cattle are subject requiring the nicest care and attention to render it easy of cure. An animal badly nursed will not, under the most skillful treatment, quickly recover. Its causes are in the main, due to poor food, which produces a debilitated condition of the system, and in connection with a want of cleanliness, causes a development of the _acari_, or minute insects, exciting very great irritation upon the skin and causing the cow to rub herself against every object with which she comes in contact. The hair falls off; a scurfy appearance of the skin is perceptible; and the animal is poor in condition and in milk. The great trouble in treating this disease springs from its contagious character; for, no sooner is the animal, oftentimes, once free from the _acari_ than it comes in contact with some object against which it has previously been rubbing, when the _acari_ which were left upon that object are again brought in contact with the animal, and the disease is reproduced. If, immediately after the proper applications are made, the animal is removed to other quarters, and not allowed to return to the former ones for six or eight weeks, there is, generally speaking, but little trouble in treating the disease.