freshly obtained material from another animal is also possible—the case of teeth, for example. The grafting of skin and bone is done to facilitate healing. The surgeon places in the middle of the wound pieces of skin snipped from another animal, or fragments of bone from a victim freshly killed. Hunter's cockspur—possibly you have heard of that—flourished on the bull's neck. And the rhinoceros rats of the Algerian Zouaves are also to be thought of—monsters manufactured by transferring a slip from the tail of an ordinary rat to its snout, and allowing it to heal in that position."
"Monsters manufactured!" said I. "Then you mean to tell me———"
"Yes. These creatures you have seen are animals carven and wrought into new shapes. To that—to the study of the plasticity of living forms—my life has been devoted. I have studied for years, gaining in knowledge as I go. I see you look horrified, yet I am telling you nothing new. It all lay on the surface of practical anatomy years ago, but no one had the temerity to touch it. It's not simply the outward form of an animal I can change. The physiology, the chemical rhythm of the creature may also be made to undergo an enduring modification, of which vaccination and other methods of inoculation with living or dead matter are examples that will no doubt be familiar to you. A similar operation is the transfusion of blood, with which subject indeed I began. These are all familiar cases. Less so, and probably far more extensive, were the operations of those mediæval practitioners who made dwarfs and beggar cripples
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