Ricketts has succeeded in grafting the skin of a frog to that of a tortoise, and also grafting frog skin to human skin.

Ricketts remarks that the prepuce of a boy is remarkably good material for grafting.

Sponge-grafts are often used to hasten cicatrization of integumental wounds.

There is recorded an instance in which the breast of a crow and the back of a rat were grafted together and grew fast.

The crow dragged the rat along, and the two did not seem to care to part company.
Relative to skin-grafting proper, Bartens succeeded in grafting the skin of a dead man of seventy on a boy of fourteen.