HKB
with it every kind of timber, soil, and stones, and making such huge moraines, that at times the appearance of a locality becomes in a brief period difficult to recognise.[222]
+42.+ This should prevent any surprise that rivers of such magnitude and rapidity, flowing perpetually instead of intermittently, should produce these effects and end by filling up the Pontus. For it is not a mere probability, but a logical certainty, that this must happen. And a proof of what is going to take place is this, that in the same proportion as the Maeotic lake is less salt than the Pontus, the Pontus is less so than the Mediterranean. From which it is manifest that, when the time which it has taken for the Maeotic lake to fill up shall have been extended in proportion to the excess of the Pontic over the Maeotic basin, then the Pontus will also become like a marsh and lake, and filled with fresh water like the Maeotic lake: nay, we must suppose that the process will be somewhat more rapid, insomuch as the rivers falling into it are more numerous and more rapid. I have said thus much in answer to the incredulity of those who cannot believe that the Pontus is actually being silted up, and will some day be filled; and that so vast a sea will ever become a lake or marsh. But I have another and higher object also in thus speaking: which is to prevent our ignorance from forcing us to give a childish credence to every traveller’s tale and marvel related by voyagers; and that, by possessing certain indications of the truth, we may be enabled by them to test the truth or falsehood of anything alleged by this or that person.
[Sidenote: Site of Byzantium.]
[Sidenote: B.C. 512.]
+43.+ I must now return to the discussion of the excellence of the site of Byzantium. The length of the channel connecting the Pontus and Propontis being, as I have said, a hundred and twenty stades, and Hieron marking its termination towards the Pontus, and the Strait of Byzantium that towards the Propontis,—half-way between these, on the European side, stands Hermaeum, on a headland jutting out into the channel, about five stades from the Asiatic coast, just at the narrowest point of the whole channel; where Darius is said to have made his bridge of ships across the strait, when he crossed to invade Scythia. In the rest of the channel the running of the current from the Pontus is much the same, owing to the similarity of the coast formation on either side of it; but when it reaches Hermaeum on the European side, which I said was the narrowest point, the stream flowing from the Pontus, and being thus confined, strikes the European coast with great violence, and then, as though by a rebound from a blow, dashes against the opposite Asiatic coast, and thence again sweeps back and strikes the European shore near some headlands called the Hearths: thence it runs rapidly once more to the spot on the Asiatic side called the Cow, the place on which the myth declares Io to have first stood after swimming the channel. Finally the current runs from the Cow right up to Byzantium, and dividing into two streams on either side of the city, the lesser part of it forms the gulf called the Horn, while the greater part swerves once more across. But it has no longer sufficient way on it to reach the opposite shore on which Calchedon stands: for after its several counter-blows the current, finding at this point a wider channel, slackens; and no longer makes short rebounds at right angles from one shore to the other, but more and more at an obtuse angle, and accordingly, falling short of Calchedon, runs down the middle of the channel.
[Sidenote: B.C. 410.]