Note 93 — Chapter V
Reading edition
The principal authorities are the following:
M. Niebuhr reckoned between Suez and the Lake of the Pilgrims, situated at 6,9 G. miles E 38 N from Cairo, 28h 40m
M. Volney, 29 —
Dr. Pocock, 29 15
mean 28 58
Add from the Lake to Cairo, as it is usually reckoned, 3 —
or say 32 hours 31 58
But as there are (besides the just mentioned 3 hours, in a direction of about 40° from the general line of direction) 3¼ hours more between Suez and Ajerud, at much the same angle, a considerable reduction of the direct distance must take place, probably about 1¾ hour: whence there remains 30¼. And as Dr. Shaw states the general report of the distance to be 30 hours, it may be conceived that this is the actual distance, by the shortest route, which leaves the Lake and Ajerud to the north. And for these, 59 G. miles direct may be allowed. M. D’Anville allowed 60.