ON BLISTERING.
The Spanish fly in its action is intense, yet superficial. It plentifully raises the cuticle, yet rarely injures the true skin and therefore seldom blemishes. The application of other acrid substances is occasionally followed by deeply seated ulceration; but a blister composed of the Spanish fly alone, while it does its duty, leaves, after a few weeks have passed, scarcely a trace behind. The art of blistering consists in cutting or rather shaving the hair close, then rubbing on the ointment at least ten minutes. As soon as the vesicles have risen, which will be in something like 20 hours, you may relieve the animal by the application of olive or neatsfoot oil. In inflammation of the lungs, &c., it should be made to act sooner. The principle of the blister is, that no intense inflammation can exist in the neighboring parts at the same time. An infusion of 2 ounces of the flies in 1 pint of oil of turpentine, for several days, is frequently used, and with good effect. This is a sure and safe remedy. If in the winter blanket the horse to keep him warm until he is over it; put a blanket over the head also if very cold.