* The classic writers themselves knew that, according to Egyptian belief, the Nile flowed down from heaven. The legend of the Nile having its source in the ocean stream was but a Greek transposition of the Egyptian doctrine, which represented it as an arm of the celestial river whereon the sun sailed round the earth. Before they passed beyond the defiles of Gebel Silsileh, they thought that the spot whence the celestial waters left the sky was situate between Elephantine and Philae, and that they descended in an immense waterfall whose last leaps were at Syene. It may be that the tales about the first cataract told by classic writers are but a far-off echo of this tradition of a barbarous age. Conquests carried into the heart of Africa forced the Egyptians to recognize their error, but did not weaken their faith in the supernatural origin of the river. They only placed its source further south, and surrounded it with greater marvels. They told how, by going up the stream, sailors at length reached an undetermined country, a kind of borderland between this world and the next, a "Land of Shades," whose inhabitants were dwarfs, monsters, or spirits. Thence they passed into a sea sprinkled with mysterious islands, like those enchanted archipelagoes which Portuguese and Breton mariners were wont to see at times when on their voyages, and which vanished at their approach. These islands were inhabited by serpents with human voices, sometimes friendly and sometimes cruel to the shipwrecked. He who went forth from the islands could never more re-enter them: they were resolved into the waters and lost within the bosom of the waves. A modern geographer can hardly comprehend such fancies; those of Greek and Roman times were perfectly familiar with them. They believed that the Nile communicated with the Red Sea near Suakin, by means of the Astaboras, and this was certainly the route which the Egyptians of old had imagined for their navigators. The supposed communication was gradually transferred farther and farther south; and we have only to glance over certain maps of the sixteenth and seventeenth centuries, to see clearly drawn what the Egyptians had imagined--the centre of Africa as a great lake, whence issued the Congo, the Zambesi, and the Nile. Arab merchants of the Middle Ages believed that a resolute man could pass from Alexandria or Cairo to the land of the Zindjes and the Indian Ocean by rising from river to river.[*] * Joinville has given a special chapter to the description of the sources and wonders of the Nile, in which he believed as firmly as in an article of his creed. As late as the beginning of the seventeenth century, Wendelinus devoted part of his _Admiranda Nili_ to proving that the river did not rise in the earthly Paradise. At Gurnah, forty years ago, Rhind picked up a legend which stated that the Nile flows down from the sky.