However some of the Hellenes who desired to gain distinction for cleverness have given an account of this water in three different ways: two of these I do not think it worth while even to speak of except only to indicate their nature; of which the one says that the Etesian Winds are the cause that makes the river rise, by preventing the Nile from flowing out into the sea. But often the Etesian Winds fail and yet the Nile does the same work as it is wont to do; and moreover, if these were the cause, all the other rivers also which flow in a direction opposed to the Etesian Winds ought to have been affected in the same way as the Nile, and even more, in as much as they are smaller and present to them a feebler flow of stream: but there are many of these rivers in Syria and many also in Libya, and they are affected in no such manner as the Nile. 21. The second way shows more ignorance than that which has been mentioned, and it is more marvellous to tell; 262 for it says that the river produces these effects because it flows from the Ocean, and that the Ocean flows round the whole earth. 22.