If a foot came to the farrier in a perfectly normal condition, never having been subjected to the destructive process of common shoeing, the directions for putting on the Goodenough shoe would be simply, to dress the foot by paring or rasping the wall until a shoe of proper size laid upon the prepared crust would give an even bearing with the frog all over the foot; then, as the calk wore away, the pressure would come more and more upon the frog and the foot would retain its natural state during the life-time of the horse. A colt thus shod could not have a corn, for a corn is an ulcer caused by the wings of the coffin-bone pressing upon a hard, unelastic substance. When the horse raises his foot the coffin-bone is lifted upward by the action of the flexor tendon; when his foot touches the earth the weight of the animal is thrown upon the same bone, and, if unsupported by the natural cushion of the foot, the action of the bone pressing the sensitive sole upon iron causes the bruise which, for lack of another name, is called a corn. The horse thus shod would never have a quarter crack, for that is the immediate effect of contraction caused by the absence of the expanding action of the frog and the consequent dead condition of the hoof from want of circulation and proper secretions. The horse would be equally free from "drop" and "pumiced" sole, seedy toe, thrush, and kindred complaints. INCIPIENT UNSOUNDNESS. [Illustration: FOOT, SHOWING SHOE AND FROG.] It is almost impossible to find a horse perfectly sound in his feet, unless one looks (strange as it may seem) into the stables of the Third Avenue Railroad Company, or those of Adams' Express, or Dodd's Transfer Company, or into some of the other stables where our shoe and system are in faithful use; we will therefore call attention to such a case as will be generally presented at the forge: A good young horse, shod for several years upon the common plan, and in the early stages of contraction. We find he has on wide-web shoes, weighing about twenty ounces each; these may be smooth in front and calked behind; they bear upon the sole and heel. In place of a frog, we discover a point of hard, shrunken, cracked substance, neither frog nor sole. We cut the clenches and take off the relic of ignorance and barbarism, throwing it with hearty good-will into the only place fit to receive it--the pile of scrap-iron. We examine carefully to see that no stub of nail is left in. The heels will be found long and hard. Our object being _frog-pressure_, to get the vivifying action of this tactile organ upon the ground, we pare down the whole wall; we soon come to signs of a corn--perhaps a drop of blood starts; but as we do not intend to put the weight upon the heels, we are not alarmed. Having cut all we can from the heels and still finding that the frog, when the shoe is laid on, can not touch the ground, _we knock down the last two calks and draw the heel of the shoe