The _Memoir_ further indicates the route by which Alexander, after starting from Patala to return homewards, reached the Arabis or Arabios—now the Purâli river, which flows through Lus Bela, and discharges into Sonmiyâni Bay. The eastern frontier of the Arabios lay near Krokala, and was very probably formed by the river called the Malîr. Alexander, according to Curtius, reached this frontier in a nine-days’ march from Patala, and the western frontier, which was about 65 miles distant from the other, in five days more. Our author, assuming that Alexander would not have marched his army across the comparatively waterless plain of the Kohistân, but would keep, if possible, within easy reach of the river or one of its branches, thinks it obvious that the earlier part of the route would follow the branch which ran westward—the branch, namely, of which the Kalrî and Ghâro formed the lower portion. From the position which he assigns to Patala, the distance traversed in the nine-days’ march would be 117 miles, while the point on the Malîr where Alexander encamped would be, he thinks, 7 or 8 miles east by north from Karâchî cantonments. The distance between the Malîr and the Purâli, it must be pointed out, is much greater now than it was in Alexander’s time, for, like the Indus, the Purâli has shifted its course far westward. The coast-line, moreover, at Sonmiyâni has advanced 20 miles, if not more, since then. Our author, therefore, placing the mouth of the river rather to the north of the latitude of Liâri, suggests that the point where the army reached the Arabios was about 10 miles east by north from Liâri, and 20 miles north or north by east from Sonmiyâni. The last Appendix in the _Memoir_ is devoted to a review of the narrative of the voyage by which Nearchos in six days reached the mouth of the Arabios or Purâli from Alexander’s Haven. It states in the outset that the discovery of the great advance of the coast about the head of Sonmiyâni Bay serves to explain some difficulties in the account of the voyage which have hitherto defied solution. We here abridge that account:—