hours contain seventy-four invocations of Ra in Amenti, _i.e._ in his concealment. In a similar way the monuments of Edfu exhibit the growth of the sun-god through the twelve hours of the day from a child to a youth and a man, and an old man bowed with age, leaning upon a staff. This last is called in the inscriptions, "The old man who becomes again a child."[40] The monuments exhibit Ra in red, with the sun's orb on his head, a sceptre in one hand, and the symbol of life in the other. The cat, the tawny bull, and the hawk are the chosen creatures of Ra; often he is found on the monuments with the head of a hawk in the place of the human head, or as a hawk carrying the sun's orb. All the entrances of the temple and the pylons display the symbolical form of the deity, the sun's orb, supported by two wings. From the sun-god the kings of Egypt derived their might and power. They generally call themselves "the sons of Ra," and they rule over Egypt as Ra rules over the world. Hence we can assume that to the minds of the priests Ptah was essentially the deity of beginning, the first originator of creation. Ra again was the propagating and sustaining power of the divinity embodied in the sun. At Hermopolis (Ashmunein), besides Thoth, whom the Greeks compared to their Hermes, and the inscriptions name the "Lord of divine truth," the "scribe of truth," to whom the white Ibis with black neck and beak is sacred, the "children of Ptah" were worshipped. These were eight gods in four pairs. Owing to this worship Hermopolis was known to the Egyptians as Pe-sesennu, _i.e._ "the city of reverence." These children of Ptah seem to have been spirits of the elements. In an inscription at Edfu we find, "The eight gods, the very great, who are from the beginning, created before the gods, the children of Ptah, arising through him, begotten of him, to take possession of the south and the north, to create in the Thebaid, and fashion in the land of Memphis. When they arose the stream flowed out from the young waters, the child of the lotus flower rose up in the boat, the beautiful one, making this earth bright by his beams."[41]