Major Abbott attempts to follow the march and operations of Alexander, from Alexandria ad Caucasum to the rock of Aornos (p. 311 _seq._). He shows highly probable reason for believing that the Aornos described by Arrian is the Mount Mahabunn, near the right bank of the Indus (lat. 34° 20´), about sixty miles above its confluence with the Kabool river. “The whole account of Arrian of the rock Aornos is a faithful picture of the Mahabunn. It was the most remarkable feature of the country. It was the refuge of all the neighboring tribes. It was covered with forest. It had good soil sufficient for a thousand ploughs, and pure springs of water everywhere abounded. It was 4125 feet above the plain, and fourteen miles in circuit. The summit was a plain where cavalry could act. It would be difficult to offer a more faithful description of the Mahabunn. The side on which Alexander scaled the main summit had certainly the character of a rock. But the whole description of Arrian indicates a table mountain” (p. 341). The Mahabunn “is a mountain table, scarped on the east by tremendous precipices, from which descends one large spur down upon the Indus between Sitana and Umb” (p. 340). To this similarity in so many local features, is to be added the remarkable coincidence of name, between the town Embolima, where Arrian states that Alexander established his camp for the purpose of attacking Aornos—and the modern names Umb and Balimah (between the Mahabunn and the Indus)—“the one in the river valley, the other on the mountain immediately above it” (p. 344). Mount Mahabunn is the natural refuge for the people of the neighborhood from a conqueror, and was among the places taken by Nadir Shah (p. 338). A strong case of identity is thus made out between this mountain and the Aornos _described by Arrian_. But undoubtedly it does not coincide with the Aornos _described by Curtius_, who compares Aornos to a Meta (the conical goal of the stadium), and says that the Indus washed its base,—that at the first assault several Macedonian soldiers were hurled down into the river. This close juxtaposition of the Indus has been the principal feature looked for by travellers who have sought for Aornos; but no place has yet been found answering the conditions required. We have here to make our election between Arrian and Curtius. Now there is a general presumption in Arrian’s favor, in the description of military operations, where he makes a positive statement; but in this case, the presumption is peculiarly strong, because Ptolemy was in the most conspicuous and difficult command for the capture of Aornos, and was therefore likely to be particular in the description of a scene where he had reaped much glory. [536] Arrian, iv. 30, 13. ἡ στρατιὰ αὐτῷ ὡδοποίει τὸ πρόσω ἰοῦσα, ἄπορα ἄλλως ὄντα τὰ ταύτῃ χωρία, etc.