Note 55 — Chapter II
Reading edition
‘The average breadth of the valley from one mountain-range to the other, between Cairo in Lower, and Edfoo in Upper Egypt, is only about seven miles; and that of the cultivable land, whose limits depend on the inundation, scarcely exceeds five and a half.’ Wilkinson's Ancient Egyptians, vol. i. p. 216. According to Gerard, ‘the mean width of the valley between Syene and Cairo is about nine miles.’ Note in Heeren's African Nations, vol. ii. p. 62.