Book 2
4.3
In addition to this, the perpendicularSpoken of by Polybius. is not correct, supposing it true that Narbonne lies under almost the same parallel as Marseilles, and that this latter place is under the same parallel as Byzantium; which is the opinion of Hipparchus. Now the line drawn across the sea lies under the same parallel as the Strait [of the Pillars] and Rhodes; and the distance from Rhodes to Byzantium, which both lie under the same meridian, is estimated at about 5000 stadia; to which the above-mentioned perpendicular ought to be equal. But since they say that from the recess of the Galatic Gulf, the greatest distance across the sea from Europe to Libya is 5000 stadia, it seems to me that either there is some error in this statement, or that at this point Libya must incline very much to the north, and so come under the same parallel as the Pillars. Polybius is likewise mistaken in telling us that this said perpendicular terminates close to Sardinia; for instead of being lose to Sardinia, it is far west thereof, having almost the whole of the sea of LiguriaThe Gulf of Genoa. between it and that island. Besides this he makes the length of the sea-coast too great; but this [error] is not so considerable [as the two preceding].
