'The Oedipus for this king of the Sphinxes is yet wanting. Whoever would drain the immeasurable sand-flood which buries the tombs themselves, and lay open the base of the Sphinx, the ancient temple-path, and the surrounding hills, could easily decide it. But with the enigmas of history there are joined many riddles and wonders of nature, which I must not leave quite unnoticed. The newest of all, at least, I must describe. 'I had descended with Abeken into a mummy-pit, to open some newly discovered sarcophagi, and was not a little astonished, upon descending, to find myself in a regular snow-drift of locusts, which, almost darkening the heavens, flew over our heads from the south-west from the desert in hundreds of thousands to the valley. I took it for a single flight, and called my companions from the tombs, where they were busy, that they might see this Egyptian wonder ere it was over. But the flight continued; indeed the work-people said it had begun an hour before. Then we first observed that the whole region, near and far, was covered with locusts. I sent an attendant into the desert to discover the breadth of the flock. He ran for the distance of a quarter of an hour, then returned and told us that, as far as he could see, there was no end to them. I rode home in the midst of the locust shower. At the edge of the fruitful plain they fell down in showers; and so it went on the whole day until the evening, and so the next day from morning till evening, and the third; in short to the sixth day, indeed in weaker flights much longer. Yesterday it did seem that a storm of rain in the desert had knocked down and destroyed the last of them. The Arabs are now lighting great smoke-fires in the fields, and clattering and making loud noises all day long to preserve their crops from the unexpected invasion. It will, however, do little good. Like a new animated vegetation, these millions of winged spoilers cover even the neighbouring sand-hills, so that scarcely anything is to be seen of the ground; and when they rise from one place they immediately fall down somewhere in the neighbourhood; they are tired with their long journey, and seem to have lost all fear of their natural enemies, men, animals, smoke, and noise, in their furious wish to fill their stomachs, and in the feeding of their immense number. The most wonderful thing, in my estimation, is their flight over the naked wilderness, and the instinct which has guided them from some oasis over the inhospitable desert to the fat soil of the Nile vale. Fourteen years ago, it seems, this Egyptian plague last visited Egypt with the same force. The popular idea is that they are sent by the comet which we have observed for twelve days in the South-west, and which, as it is now no longer obscured by the rays of the moon, stretches forth its stately tail across the heavens in the hours of the night. The Zodiacal light, too, so seldom seen in the north,