(8) That part of Atlantis facing the sea was described as lofty and precipitous, but about the central city was a plain sheltered by mountains renowned for their size, number, and beauty. The plain yielded two crops each year,, in the winter being watered by rains and in the summer by immense irrigation canals, which were also used for transportation. The plain was divided into sections, and in time of war each section supplied its quota of fighting men and chariots.

(13) "But afterwards there occurred violent earthquakes and floods; and in a single day and night of rain all your warlike men in a body sank into the earth, and the island of Atlantis in like manner disappeared, and was sunk beneath the sea. And that is the reason why the sea in those parts is impassable and impenetrable, because there is such a quantity of shallow mud in the way; and this was caused by the subsidence of the island."

(4) The description of the Atlantean civilization given by Plato in the Critias may be summarized as follows. In the first ages the gods divided the earth among themselves, proportioning it according to their respective dignities. Each became the peculiar deity of his own allotment and established therein temples to himself, ordained a priestcraft, and instituted a system of sacrifice. To Poseidon was given the sea and the island continent of Atlantis. In the midst of the island was a mountain which was the dwelling place of three earth-born primitive human beings--Evenor; his wife, Leucipe; and their only daughter, Cleito. The maiden was very beautiful, and after the sudden death of her parents she was wooed by Poseidon, who begat by her five pairs of male children. Poseidon apportioned his continent among these ten, and Atlas, the eldest, he made overlord of the other nine. Poseidon further called the country Atlantis and the surrounding sea the Atlantic in honor of Atlas. Before the birth of his ten sons, Poseidon divided the continent and the coastwise sea into concentric zones of land and water, which were as perfect as though turned upon a lathe. Two zones of land and three of water surrounded the central island, which Poseidon caused to be irrigated with two springs of water--one warm and the other cold.