CORN. The seat of this disease is one of the heels of the sole of the foot, most commonly the inner heel; because, that being the one which moves the most in action, is more likely to strike against the heel of the shoe, and be bruised, than the outer one. It is very erroneous to suppose that a corn in a horse bears any analogy to a corn in a man's foot: it is quite a different thing; it consists in a bruise of the sensitive parts at the heels, by which their blood-vessels become ruptured and blood exudes, which, by penetration, stains the horn with a red or pinkish spot. The remedy for corn consists in preventing the possibility of contact between the bruised part and the shoe; and in poulticing the foot, should there be inflammation existing; if not, in simply stopping it with clay or any other moist substance, the object being to soften the horn. It is very important, however, to remember that, be fore this is done, the corn should be pared as thin as possible.
Quirron is the name for an ulcer upon some part of the circle where the hoof and skin unite, leading to a sinus which runs downward between the hoof and the sensitive foot. Commonly, this takes place in the inner quarter, in consequence of that being a part frequently bruised by the shoe of the fellow foot; and also in consequence of the inner side be ing the more frequent seat of corn, of which this disease is occasionally the offset. The cure should first be attempted with caustics; and one of the best is corrosive sublimate, with the powder of which the sinus should be filled, and afterwards the foot poulticed. Should this fail, the actual cautery may be employed : with a smooth cylindrical blunt pointed iron, heated to redness, cauterize the sinus down to its bottom, and on every side, and after wards fill it with corrosive sublimate. Should these
means fail, our only resource is to take away part of the quarter of the hoof, and excise the diseased portion of cartilage.
Fnusn.—This is so common a disease, and one that is so commonly unattended with any sort of suffering, or at least sufficient to occasion lameness, that many people look upon a frush as no disease at all. It consists in a foetid issue from the cleft of the frog; which gradually rots away the horn in the immediate vicinity, until the whole of the cleft, whose cavity becomes at the same time enlarged, acquires the softness of cheese and turns into a mass of corruption of the most malignant and noi some description. In recent cases, simple astrin gents are all that is required. Equal parts of pow dered alum and charcoal, or, of the former and double its quantity of Armenian bole: pare out the cleft, and introduce some of the powder upon a piece of tow, and renew the dressing every day. In worse cases, a small proportion of powdered blue vitriol must be added; about one part in six. Vitriol water (made by mixing one ounce of vitriol with a pint of water) is also a very good applica tion. After the dressing is applied, in wet weather it is good practice to pour melted tar over the sur face of the frog, to prevent the dirt and wet from penetrating into the cleft.