Note 691 — Chapter IV
W. (William) Falconer translation
This is an error into which Strabo fell with most of the ancient geographers. The course of the Don certainly begins from the north, but afterwards it turns eastward, and then suddenly shifts to the west. So that its entire course as known in the time of Strabo, differed from the Palus Mæotis and Sea of Azof by about 9 degrees of longitude. Polybius is here more exact than Strabo.