In the geography of Ptolemy (6.14
; comp. Menand. Hist.
p. 301, ed. Bonn), this river, which he describes as flowing into the Caspian, is the second river from the Rha (Volga
) towards the Jaxartes, the Rhymnus intervening; but there must be some mistake (comp. Rennell, Geog. Herod.
vol. i. p. 180), as there can be no doubt that the Daix is represented by the Jaik
(Humboldt, Asie Centrale,
vol. ii. p. 186), which forms part of the E. limit of Europe, rising in the Ural
mountains, and falling into the Caspian, after a course of about 900 English miles.
This river is the W. boundary to the vast steppes over which the hordes of the Kirghiz-Kazaks
roam. (Levchine, Hordes et Steppes des Kirghiz-Kazaks,