Book 1
2.39
Some writers assert that Jason and his companions sailed high up the Ister, others say he sailed only so far as to be able to gain the Adriatic: the first statement results altogether from ignorance; the second, which supposes there is a second Ister having its source from the larger river of the same name, and discharging its waters into the Adriatic, is neither incredible nor even improbable.The erroneous opinion that one of the mouths of the Danube emptied itself into the Adriatic is very ancient, being spoken of by Aristotle as a well-known fact, and likewise supported by Theopompus, Hipparchus, and many other writers.
