One point in the Theban ritual—the application of the skin to the image of the god—deserves special attention. If the god was at first the living ram, his representation by an image must have originated later. But how did it originate? The answer to this question is perhaps furnished by the practice of preserving the skin of the animal which is slain as divine. The Californians, as we have seen, preserved the skin of the buzzard; and the skin of the goat, which is killed on the harvest-field as a representative of the corn-spirit, is kept for various superstitious purposes.(307) The skin in fact was kept as a token or memorial of the god, or rather as containing in it a part of the divine life, and it had only to be stuffed or stretched upon a frame to become a regular image of him. At first an image of this kind would be renewed annually,(308) the new image being provided by the skin of the slain animal. But from annual images to permanent images the transition is easy. We have seen that the older custom of cutting a new May-tree every year was superseded by the practice of maintaining a permanent May-pole, which was, however, annually decked with fresh leaves and flowers and even surmounted each year by a fresh young tree.(309) Similarly when the stuffed skin, as a representative of the god, was replaced by a permanent image of him in wood, stone, or metal, the permanent image was annually clad in the fresh skin of the slain animal. When this stage had been reached, the custom of killing the ram came naturally to be interpreted as a sacrifice offered to the image, and was explained by a story like that of Ammon and Hercules. West Africa furnishes another example of the annual killing of a sacred animal and the preservation of its skin. The negroes of Issapoo, in the island of Fernando Po, regard the cobra-capella as their guardian deity, who can do them good or ill, bestow riches or inflict disease and death. The skin of one of these reptiles is hung tail downwards from a branch of the highest tree in the public square, and the placing of it on the tree is an annual ceremony. As soon as the ceremony is over, all children born within the past year are carried out and their hands made to touch the tail of the serpent’s skin.(310) The latter custom is clearly a way of placing the infants under the protection of the tribal god. Similarly in Senegambia a python is expected to visit every child of the Python clan within eight days after birth;(311) and the Psylli, a Snake clan of ancient Africa, used to expose their infants to snakes in the belief that the snakes would not harm true-born children of the clan.(312)