49/78 At Kummeh and Semneh, in Nubia, where the Nile rushes over the rocks of the second cataract, the engineering arrangements are very ingenious, and display much real skill. had fixed on this pass as the frontier of Egypt, and the fortresses which he there constructed were intended to bar the water-way against the vessels of the neighbouring negro tribes. At Kummeh, on the right bank, the position was naturally strong (fig. 34). |