...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 ...