Tarsus is situated in a plain. It was founded by Argives, who accompanied Triptolemus in his search after Io. The Cydnus flows through the middle of it, close by the gymnasium of the young men. As the source is not far distant, and the stream passing through a deep valley, then flows immediately into the city, the water is cold and rapid in its course; hence it is of advantage to men and beasts affected with swellings of the sinews, fluxions, and gout.257