When it is necessary to lessen the whole quantity of blood in the system, open the jugular or neck vein. If the inflammation is local, bleed where it can be conveniently done, either from the part affected, or in its vicinity, as by opening the plate vein, superficial vein of the thigh, or temporal arteries. In fevers of all kinds, and when inflammation attacks any important organ, as the brain, eyes, lungs, stomach, intestines, liver, kidneys, bladder, &c. bleeding is of the greatest use. It diminishes the quantity of blood in the body; and by this means prevents the ill effects of inflammation. The quantity of blood to be taken varies according to the age, size, condition, and constitution of the horse, and urgency of the symptoms. From a large or strong horse, four or six quarts will be requisite, and may be repeated in smaller quantities if symptoms demand it. The blood, in these diseases, must flow from a large orifice made in the vein. A horse should _never be suffered to bleed upon the ground, but into a measure_, in order that the proper quantity may be taken. Young horses, also, while shedding their teeth, have sometimes much constitutional irritation, which bleeding relieves. But in these affections it is very rarely necessary to bleed to the same extent as in fevers, &c.; two or three quarts generally suffice to be taken away. _Fulness of Blood._ Moderate bleeding, from two to three or four quarts, is also used to remove fulness of habit, or plethora, attended with slight inflammatory symptoms. In this case the eyes appear heavy, dull, red or inflamed, frequently closed as if asleep; the pulse small and oppressed; the heat of the body somewhat increased; the legs swell; and the hairs rub off. Horses that are removed from grass to a warm stable, and full fed on hay and corn, and not sufficiently exercised, are very subject to one or more of these symptoms. Regulating the quantity of food given to him, proper exercise and occasional laxatives, as the following powder, will be commonly found sufficient after the first bleeding, and operation of an aloetic purge. In slight affections of this kind, a brisk purge will often alone be sufficient. _Laxative and Diaphoretic Powder._ Take of crocus of antimony, finely levigated, nitre, cream of tartar, and flour of sulphur, of each, 4 ounces: Powder and mix them well together for use. One table-spoonful of this mixture may be given every night and morning, in a mash of scalded bran, or a feed of corn moistened with water, that the powders may adhere thereto. This powder will be found excellent for such horses as are kept on dry meat, whether they be in the stable, or travel on the road; also for stallions in the spring of the year, as they not only keep the body cool and open, but cause them to cast their coat, and make the skin appear as bright as silk. PURGING.