The only means of real benefit lies in the treatment of the hoof and in the mode of shoeing. For the last, select what is denominated a "dish" shoe; that is, a bar shoe, having the web hollowed out like to the sides of a pie-dish. The only part of this shoe which touches the ground is the rim of the inner circle. This kind of shoe will protect the bulging sole, and if shod with leather, the protection will be greater, though the shoe will, in that case, be more difficult to retain. The flat surface at the posterior part of the shoe presents a point for the bearing of the frog, which can afford almost any amount of pressure. The many nail holes made around the shoe denote the difficulty the smith encounters when fixing a protection of this sort upon the pumiced hoof. The crust of the foot is always brittle, and the weight of iron employed being greater than usual requires an extra number of nails to fasten it securely. The smith consequently, in such cases, has no choice. He must drive a nail wherever he can find the horn which will sustain one. With regard to the horn, keep that continually dressed with equal parts of animal glycerin and tar. Moisten the hoof with this mixture twice a day. No improvement may be remarked in a week; but in two or three months the crust will have become perceptibly less brittle, and the labor of the smith will be rendered far less perplexing. For the abnormal condition of the foot--that is permanent and nothing can be done beyond employing such artifices as are calculated to relieve the affliction. SANDCRACK. Any cause which weakens the body of the horse by interfering with the health of its secretions may induce =sandcrack=. Treading for any length of time upon ground from which all moisture is absent, by rendering the horn hard or dry, may cause the hoof to be brittle and give rise to sandcrack. However, this last provocative seldom operates in this country; when sandcrack occurs in an English horse, it is generally generated by debility, which leads to the secretion of faulty horn. So far, however, is this from being the prevailing opinion, and so little sympathy does the horse receive in its diseases, that the endeavor, indeed the custom, of all veterinary surgeons is to continue at work the horse having a division running completely through the hoof. Sandcracks are of two sorts. Quarter crack, which chiefly happens among the lighter breed of animals; toe crack, which occurs principally with cart-horses, and mostly with those which work between the shafts. Quarter sandcrack is of the least importance of the two. It is oftenest seen upon the inner quarter of the hoof, where the horn, being thinnest, is most subjected to motion. Usually it commences at the coronet, extending to the sole, and also to the sensitive laminæ.