ittle advantage to them for the whole region to have become navigable; Sesostris is said to have been the first of the ancient kings to try), but he found that the sea was higher than the land. So he first, and Darius afterwards, stopped making the canal, lest the sea should mix with the river water and spoil it. So it is clear that all this part was once unbroken sea. For the same reason Libya-the country of Ammon-is, Scarpe Hogan Interactive Uomo e Donna strangely enough, lower and hollower than the land to the seaward of it. For it is clear that Chicago Blackhawks Drakter a barrier of silt was formed and after it lakes and dry land, but in course of time the water that was left behind in the lakes dried up and is now all gone. Again the silting up of the lake Maeotis by the rivers has advanced so much that the limit to the size of the ships which can now sail into it to trade is much lower than it was sixty years ago. Hence it is easy to infer that it, too, like most lakes, was originally produced by the rivers and that it must end by drying up entirely.
Again, this process of silting up causes a continuous current through the Bosporus; and in this case we can directly observe the nature of the process. Whenever the current from the Asiatic shore threw up a sandbank, there first formed a small lake behind it. Later it dried up and a second sandbank formed in front of the first and a second lake. This process went on uniformly and without interruption. Now when this has been repeated often enough, in the course of time the strait must become like a river, and in the end the river itself must dry up.
So it is clear, since there will be no end to time and the world is eternal, that neither the Tanais nor the Nile has always been flowing, but that the region whence they flow was once dry: for their effect may be fulfilled, but time cannot. And this will be equally true of all other rivers. But if rivers come into existence and perish and the same parts of the Halpa Moncler Takit Miehet earth were not always moist, the sea must needs change correspondingly. And if the sea is always advancing in one place and receding in Tennessee Titans Hattar another it is clear that the same parts of the whole earth are not always either sea or land, but that all this changes in course of time.
So we have explained Maillot Croatie Pas CHer that the same parts of the earth are not always land or sea and why that is so: and also why some rivers are perennial and others not.
Book II
1
LET us explain the nature of the sea and the reason why Maillot Uruguay Pas CHer such a large mass of water is salt and the way in which it originally came to be.
The old writers who invented theogonies say that the sea has springs, for they want earth and sea to have foundations and roots of their own. Presumably they thought that this view was grander and more impressive as implying that our earth was an important part of the universe. For they believed that the whole world had been built up round our earth and for its Halpa North Face Pants sake, and that the earth was the most important and primary part of it. Others, wiser in human knowledge, give an account of its origin. At first, they say, the earth was surrounded by moistur |
