Note 7 — Chapter VII · Barrenness.

‘The dale (in the Desert) was wild and monotonous, nothing but sandstone rock, the surfaces of which were burned as black as coals, but turned into burning golden yellow at every crack, and every ravine, whence a number of sand-rivulets, like fire-streams from black dross, ran and filled the valleys. No tree, no tuft of grass had we yet seen, also no animals, except a few vultures and crows feeding on the carcase of the latest fallen camel.... Over a wild and broken path, and cutting stones, we came deeper and deeper into the gorge. The first wide basins were empty, we therefore left the camels and donkeys behind, climbed up the smooth granite wall, and thus proceeded amidst these grand rocks from one basin to another; they were all empty. Behind there, in the farthest ravine, the guide said there must be water, for it was never empty; but there proved to be not a single drop. We were obliged to return dry.... We saw the most beautiful mirages very early in the day; they most minutely resemble seas and lakes, in which mountains, rocks, and everything in their vicinity, are reflected as in the clearest water. They form a remarkable contrast with the staring dry desert, and have probably deceived many a poor wanderer, as the legend goes. If one be not aware that no water is there, it is quite impossible to distinguish the appearance from the reality. A few days ago I felt quite sure that I perceived an overflowing of the Nile, or a branch near El Mechêref, and rode towards it, but only found Bahr Sheitan, Satan’s water, as the Arabs call it.’7