Strabo, Geography
H.C. Hamilton, Esq., W. Falconer, M.A., Ed.

That Bithynia was a colony of the Mysians, first Scylax of Caryanda will testify, who says that Phrygians and Mysians dwell around the Ascanian lake. The next witness is Dionysius, who composed a work on ‘the foundation of cities.’ He says that the straits at Chalcedon, and Byzantium, which are now called the Thracian, were formerly called the Mysian Bosporus. Some person might allege this as a proof that the Mysians were Thracians; and Euphorio says, “ by the waters of the Mysian Ascanius;

” and thus also Alexander the Ætolian, “‘who have their dwellings near the Ascanian waters, on the margin of the Ascanian lake, where Dolion dwelt, the son of Silenus and of Melia.’” These authors testify the same thing, because the Ascanian lake is found in no other siuation but this.