The Histories · 4.86

These measurements I have made as follows:—a ship completes on an average in a long day a distance of seventy thousand fathoms, and in a night sixty thousand. Now we know that to the river Phasis from the mouth of the Sea (for it is here that the Pontus is longest) is a voyage of nine days and eight nights, which amounts to one hundred and eleven myriads of fathoms; and these fathoms are eleven thousand one hundred furlongs. Then from the land of the Sindians to Themiskyra on the river Thermodon (for here is the broadest part of the Pontus) it is a voyage of three days and two nights, which amounts to thirty-three myriads of fathoms or three thousand three hundred furlongs. This Pontus then and also the Bosphorus and the Hellespont have been measured by me thus, and their nature is such as has been said: and this Pontus also has a lake which has its outlet into it, which lake is not…

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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