Quittor-Bone, in farriery, a malignant tumor which is attended with great pain, inflammation, and a considerable swelling around its basis. It is generally occasioned by long-neglected Punctures (which see), or such as have resisted the usual remedies employed in that afFection of horse's feet.

The method of cure commonly practised in the quittor-bone, consists in perforating the tumor with numerous holes, by means of a hot iron, pointed in a pyramidal form ; after which, small pieces of arsenic, or corrosive sublimate, are introduced into the cavities, where they consume, and at length separate, a mass of mortified flesh, termed by farriers, the core. This practice, however, is extremely dangerous, and does not always effect a cure, so that it becomes necessary to repeat it a second, and even a third time, to the consequent injury of the animal. The most eligible method, therefore, will be a speedy operation; for which purpose, a ligature must first be tied round the fetlock, in order to prevent too great a loss of blood; and then the tumor may be extirpated with a sharp crooked knife.

The wound is now to be dressed with warm digestive, or emollient Poultices (see Horse-medicines, vol. ii. p. 491)} and, when a proper suppuration is effected, the scabby parts may be sprinkled with the following escharotic, namely :-Take three ounces of lime, that is reduced to powder on exposure to the air, and one ounce of Armenian bole; let them be pulverized in a mortar, and passed through a sieve. Next, it will be advisable to cover the orifice with a pledget of dry lint; and, when the surface is nearly equal to the skin, the powder alone will be sufficient. Lastly, if the quittor-bone be attended with very acute pain it will be advisable to resort to the remedies usually employed in inflammatory cases; in order to prevent the humours from flowing to the wounded limb. The animal ought, therefore, to be bled; and a draught, consisting of two ounces of nitre, and a similar quantity of common treacle, dissolved in one quart of water, should be given to him every morning and evening. If the horse, however, be affected with griping pains, or other internal uneasiness, the quantity of water may be increased ; or the same portion of nitre may be allowed him in a mash of bran, twice every day, till the inflammatory symptoms disappear