With regard then to the rearing of the children they related so much as I have said: and I heard also other things at Memphis when I had speech with the priests of Hephaistos. Moreover I visited both Thebes and Heliopolis for this very cause, namely because I wished to know whether the priests at these places would agree in their accounts with those at Memphis; for the men of Heliopolis are said to be the most learned in records of the Egyptians. Those of their narrations which I heard with regard to the gods I am not earnest to relate in full, but I shall name them only because I consider that all men are equally ignorant of these matters: and whatever things of them I may record I shall record only because I am compelled by the course of the story. But as to those matters which concern men, the priests agreed with one another in saying that the Egyptians were the first of all men on earth to find out the course of the year, having divided the seasons into twelve parts to make up the whole; and this they said they found out from the stars: and they reckon to this extent more wisely than the Hellenes, as it seems to me, inasmuch as the Hellenes throw in an intercalated month every other year, to make the seasons right, whereas the Egyptians, reckoning the twelve months at thirty days each, bring in also every year five days beyond number, and thus the circle of their season is completed and comes round to the same point whence it set out. They said moreover that the Egyptians were the first who brought into use appellations for the twelve gods and the Hellenes took up the use from them; and that they were the first who assigned altars and images and temples to the gods, and who engraved figures on stones; and with regard to the greater number of these things they showed me by actual facts that they had happened so. They said also that the first man who became king of Egypt was Min; and that in his time all Egypt except the district of Thebes was a swamp, and none of the regions were then above water which now lie below the lake of Moiris, to which lake it is a voyage of seven days up the river from the sea: and I thought that they said well about the land; for it is manifest in truth even to a person who has not heard it beforehand but has only seen, at least if he have understanding, that the Egypt to which the Hellenes come in ships is a land which has been won by the Egyptians as an addition, and that it is a gift of the river: moreover the regions which lie above this lake also for a distance of three days' sail, about which they did not go on to say anything of this kind, are nevertheless another instance of the same thing: for the nature of the land of Egypt is as follows:--First when you are still approaching it in a ship and are distant a day's run from the land, if you let down a sounding-line you will bring up mud and you will find yourself in eleven fathoms. This then so far shows that there is a silting forward of the land.