NESTUS or NESSUS(Νέστος, Scyl. pp. 8, 29; Scymn. 672; Pomp. Mela, 2.2. §§ 2, 9; Plin. 4.11, 8.16; Νέσσος, Hesiod. Theog. 341; Ptol. 3.12.2, 3.13.7; Μέστος, Zonar. 9.28: Nesto, Turkish Karasú), the river which constituted the boundary of Thrace and Macedonia in the time of Philip and Alexander, an arrangement which the Romans continued on their conquest of the latter country. (Strab. 7. p. 331; Liv. 45.29.) Thucydides (Thuc. 2.96) states that it took its rise in Mt. Scomius, whence the Hebrus descended; being, in fact, that cluster of great summits between Ghiustendíland Sófia, which sends tributaries to all the great rivers of the N. of European Turkey. It discharged itself into the sea near Abdera. (Hdt. 7.109; comp. Theophrast. H. P. 3.2; Leake, Northern Greece, vol. 3. p. 215.)
[E.B.J]