It invariably follows that, as soon as impregnation takes place, the stomach from that moment takes on an irritable state, and is more susceptible to the action of unfavorable agents. Thus the odor of putrid substances cases nausea or relaxation when the animal is in a state of pregnancy; otherwise, the same odor would not affect it in the least. Professor Curtis says, "The nervous system constitutes the check lines by which the vital spirit governs, as a coachman does his horses, the whole motive apparatus of the animal economy; that every line, or pencil, or ganglion of lines, in it, is antagonistic to some other line or ganglion, so that, whenever the function of one is exalted, that of some other is depressed. It follows, of course, that to equalize the nervous action, and to sustain the equilibrium, is one of the most important duties of the physician." In addition to the causes of abortion already enumerated, we may add violent exercise, jumping dikes or hedges, sudden frights, and blows or bruises. _Treatment._--When a cow has slipped her foetus, and appears in good condition, the quantity of food usually given should be lessened. Give the following drink every night for a week:-- Valerian, (herb,) 1 ounce. Powdered skunk cabbage, 1 tea-spoonful. Steep in half a gallon of boiling water. When cold, strain and administer. Suppose the animal to be in poor condition; then put her on a nourishing diet, and give tonics and stimulants, as follows:-- Powdered gentian, 1 ounce. " sassafras, 1 ounce. Linseed or flaxseed, 1 pound. Mix. Divide into six portions, and give one, night and morning, in the food, which ought to consist of scalded meal and shorts. A sufficient quantity of hay should be allowed; yet grass will be preferable, if the season permits. Suppose the animal to have received an injury; then rest and a scalded diet are all that are necessary. As a means of prevention, see article _Feeding_, page 17. COW-POX. This malady makes its appearance on the cow's teats in the form of small pustules, which, after the inflammatory stage, suppurate. A small quantity of matter then escapes, and forms a crust over the circumference of each pustule. If the crust be suffered to remain until new skin is formed beneath, they will heal without any interference. It often happens, however, that, in the process of milking, the scabs are rubbed off. The following wash must then be resorted to:-- Pyroligneous acid, a wine-glass. Water, 1 pint. Wet the parts two or three times a day; medicine is unnecessary. A few meals of scalded food will complete the cure. MANGE.