Fables likewise bear testimony to the antiquity of this dialect. For in these it is said that Nereus married Doris the daughter of Ocean; by whom he had fifty daughters, one of which was the mother of Achilles. Metrodorus also says, that according to some, Hellen was the offspring of Deucalion, who was the son of Prometheus and Pyrrha the daughter of Epimetheus; and that from him came Dorus, and Æolus. He farther observes, that he learnt from the sacred rites of the Babylonians, that Hellen was the offspring of Jupiter, and that the sons of Hellen were Dorus, Xuthus, and Æolus; with which narrations Herodotus also accords. It is difficult, however, for those in more recent times to know accurately, in particulars so ancient, which of these narrations is to be preferred. But it may be collected from each of these histories, that the Doric dialect is acknowledged to be the most ancient; that the Æolic is next to this, which received its name from Æolus; and that the Ionic ranks as the third, which derived its appellation from Ion the son of Xuthus. The Attic is the fourth, which was denominated from Creusa, the daughter of Erectheus, and is posterior to the former dialects by three generations, as it existed about the time of the Thracians, and the rape of Orithyia, as is evident from the testimony of most histories. Orpheus also, who is the most ancient of the poets, used the Doric dialect. Of medicine, however, they especially embraced the diætetic species, and in the exercise of this were most accurate. And in the first place, indeed, they endeavoured to learn the indications of symmetry, of labor, food, and repose. In the next place, with respect to the preparation of food, they were nearly the first who attempted to employ themselves in it, and to define the mode in which it should be performed. The Pythagoreans likewise employed cataplasms, more frequently than their predecessors; but they in a less degree approved of medicated ointments. These, however, they principally used in the cure of ulcerations. But incisions and burnings they admitted the least of all things. Some diseases also they cured by incantations. But they are said to have objected to those who expose disciplines to sale; who open their souls like the gates of an inn to every man that approaches to them; and who, if they do not thus find buyers, diffuse themselves through cities, and, in short, hire gymnasia and require a reward from young men for those things which are without price. Pythagoras, however, concealed the meaning of much that was said by him, in order that those who were genuinely instructed might clearly be partakers of it; but that others, as Homer says of Tantalus, might be pained in the midst of what they heard, in consequence of receiving no delight from thence.