Note 548 — Chapter XCIV · MILITARY OPERATIONS AND CONQUESTS OF ALEXANDER, AFTER HIS WINTER-QUARTERS IN PERSIS, DOWN TO HIS DEATH AT BABYLON.

In the speech which Arrian (v. 25, 26) puts into the mouth of Alexander, the most curious point is, the geographical views which he promulgates. “We have not much farther now to march (he was standing on the western bank of the Sutledge) to the river Ganges, and the great Eastern Sea which surrounds the whole earth. The Hyrkanian (Caspian) Sea joins on to this great sea on one side, the Persian Gulf on the other; after we have subdued all those nations which lie before us eastward towards the Great Sea, and northward towards the Hyrkanian Sea, we shall then sail by water first to the Persian Gulf, next round Libya to the pillars of Herakles; from thence we shall march back all through Libya, and add it to all Asia as parts of our empire.” (I here abridge rather than translate).

It is remarkable, that while Alexander made so prodigious an error in narrowing the eastern limits of Asia, the Ptolemaic geography, recognized in the time of Columbus, made an error not less in the opposite direction, stretching it too far to the East. It was upon the faith of this last mistake, that Columbus projected his voyage of circumnavigation from Western Europe, expecting to come to the eastern coast of Asia from the West, after no great length of voyage.