Among the races of animals which, according to Egyptian belief, shared in the nature of the deities to which they were sacred, were certain pre-eminent specimens. These were recognised by certain signs by the priests, and passed for a special incarnation of the deity. They were brought into his temple, and there worshipped and prayed to as his manifestation. The most sacred among these selected animals was Apis, the bull, in the temple of Ptah, at Memphis. According to the account of Herodotus, the Egyptians believed that a ray of light from heaven had impregnated the cow, which brought forth an Apis: by Plutarch, the impregnation is said to take place by a ray of the moon.[95] The priests recognized Apis in a black bull, which had a triangular white spot on the forehead, a fleshy growth under the tongue in the form of the sacred beetle of Ptah, white spots on his back in the shape of an eagle, and bi-coloured hairs in the tail.[96] When an Apis was found, he was, says Diodorus, in the first place brought for forty successive days to the meadow of the "city of the Nile" (Nilopolis), where women were shown to him, who were afterwards excluded from the sight of the Apis. Then he was conveyed on a boat in a golden shrine like a god to the temple of Ptah, at Memphis. There he was bathed in the holy place, and anointed, and the most precious frankincense was constantly burned before him. He received the most beautiful garments, the richest bedding-places, and the most handsome cows as his "bed-fellows"; the most distinguished men provided him with the best food at a very great expense. When the Apis died of old age he was honoured with a splendid funeral. "When, on the death of Alexander, Ptolemy, the son of Lagus, made himself master of Egypt, it happened that the Apis died, and the person entrusted with his care not only spent his own large fortune upon his burial, but borrowed, in addition, fifty talents from Ptolemy. Even in my own times certain feeders of the sacred animals have spent not less than one hundred talents on a single funeral."[97]