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called after the river, through the dominions of the Silæans, who again are called after the river and the fountain; the water of the river manifests this singular property—that there is nothing which it can buoy up, nor anything which can swim or float in it, but everything sinks down to the bottom, so that there is nothing in the world so thin and unsubstantial as this water.[1] But to proceed. Rain falls in India during the summer, especially on the mountains Parapamisos and Emodos and the range of Imaos, and the rivers which issue from these are large and muddy. Rain during the same season falls also on the plains of India, so that much of the country is submerged: and indeed the army of Alexander was obliged at the time of midsummer to retreat in haste from the Akesinês, because its waters overflowed the adjacent plains. So we may by analogy infer from these facts that as the Nile is subject to similar inundations, it is probable that rain falls during the summer on the mountains of Ethiopia, and that the Nile swollen with these rains overflows its banks and inundates Egypt. We find, at any rate, that this river, like those we have mentioned, flows at the same season of the year with a muddy current, which could not be the case if it flowed from melting snows, nor yet if its waters were driven back from its
- ↑ See note, p. 65.
