years, more or less, he lost the outside toes of the fore feet, thus leaving him ready to go on developing the middle toe into the foot and hoof of the horse while the outside toes disappeared. In proof of this he offered the fact that horses of this day have splint bones on each side of the leg, under the knee, and these bones are the remnants of the outside toes. This was the explanation which the learned professor gave in disposing of the outside toes when there were but three toes on each foot, but he failed to explain what had become of the outside toes when there were five on each foot, and there his whole explanation toppled to the ground. In the American Museum of Natural History, in this city, there is a very fine representative of this particular type of petrefactions. It is about fifteen inches high, with a head that is disproportionately large, and a tail that is long and slender, suggesting that of a leopard. On each fore foot this animal has four toes, or claws, as we might call them, and on each hind foot three claws. With these claws this little animal might dig in the ground, or he might climb a tree when necessary for either safety or food. Each one of these toes has its own distinct column of joints and bone extending to the knee, and there is no material difference in the size and strength of these different columns. Now, with three toes and three columns only, we can accept or reject, as we please, Professor Huxley’s method of getting the two superfluous ones out of sight by pointing to the splint bones on the leg of a modern horse and saying these are the remnants of the outside toes. But, in the meantime, neither Mr. Huxley nor anybody else has told us what became of the outside toes and their columns in cases where there were five toes. It will not do to chuck these out of sight and say nothing about them; they must be accounted for or the theory fails. In the specimen now under examination the fore feet are each supplied with four toes, and each toe is supported by its own distinct column of bone. Here we meet with the same difficulty as in the case of five toes, for we have more material than the Huxley theory is able to provide for. This theory has been generally accepted among specialists, in this line of investigation, and they all point to the splint bones, as already stated, as the remnants of the two toes, adhering to the main column. This leaves the one superfluous toe wholly unprovided for, and thus the theory discredits itself and leaves the question in a shape that is entirely unsatisfactory and unacceptable to the understanding.