Lobo knows nothing of the Nile in the rest of its passage, except that it receives great increase from many other rivers, has several cataracts like that already described, and that few fish are to be found in it: that scarcity is to be attributed to the river-horse, and the crocodile, which destroy the weaker inhabitants of the river. Something, likewise, must be imputed to the cataracts, where fish cannot fall without being killed. Lobo adds, that neither he, nor any with whom he conversed about the crocodile, ever saw him weep; and, therefore, all that hath been said about his tears, must be ranked among the fables, invented for the amusement of children. "As to the causes of the inundations of the Nile, Lobo observes, that many an idle hypothesis has been framed. Some theorists ascribe it to the high winds, that stop the current, and force the water above its banks. Others pretend a subterraneous communication between the ocean and the Nile, and that the sea, when violently agitated, swells the river. Many are of opinion, that this mighty flood proceeds from the melting of the snow on the mountains of Aethiopia; but so much snow and such prodigious heat are never met with in the same region. Lobo never saw snow in Abyssinia, except on mount Semen, in the kingdom of Tigre, very remote from the Nile; and on Namara, which is, indeed, nor far distant, but where there never falls snow enough to wet, when dissolved, the foot of the mountain. To the immense labours of the Portuguese mankind is indebted for the knowledge of the real cause of these inundations, so great and so regular. By them we are informed, that Abyssinia, where the Nile rises, is full of mountains, and, in its natural situation, is much higher than Aegypt; that in the winter, from June to September, no day is without rain; that the Nile receives in its course, all the rivers, brooks, and torrents, that fall from those mountains, and, by necessary consequence, swelling above its banks, fills the plains of Aegypt with inundations, which come regularly about the month of July, or three weeks after the beginning of the rainy season in Aethiopia. The different degrees of this flood are such certain indications of the fruitfulness or sterility of the ensuing year, that it is publickly proclaimed at Cairo how much the water hath gained during the night."