This inſtance then, if it proves any thing, proves the direct contrary to the opinion of Mr. La Nauze.
The ſame gentleman again alledges, that Herodotus has eſtimated a ſhip's ſailing for a day and a night at 1300 ſtadia; whereas Ptolemy allows 1000 ſtadia only; which difference he ſuppoſes to be owing to their employing ſtadia of different lengths. But the voyage of Scylax, whoſe date, though not aſcertained, is confeſſedly much prior to the age of Ptolemy, allows no more than 1000 ſtadia; and Herodotus ſpeaks of 700 ſtadia as a long day's ſail; μακρημερίν and the Words, which aſſign 600 ſtadia as a night's ſail, are in many copies wanting altogether.
The ancient writers made a great difference between a long day's ſail and one of a common day. Xenophon ſays, that a trireme galley could row, in a very long day, (Ἡμέρας μάλα μακρὰς πλοῦς,) from Byzantium to Heraclea; which diſtance is, by Arrowſmith's chart of the Black ſea, 131 Engliſh miles, or 1144 Olympic ſtadia. The longeſt day in that latitude is leſs than 15 hours, and the complement of this number to 24 would allow time ſufficient to complete a voyage of more than 1300 ſtadia (ſuppoſing them to be Olympic) in a day and night.
The laſt inſtance I mean to cite from Mr. La Nauze does, I think, no credit to his candour. He ſays, that Herodotus lays down 200 ſtadia as the extent of a day's journey of a foot traveller; and that Vegetuis had mentioned 20 miles as the day's march of the Roman ſoldiers; which, he obſerves, is juſt ten ſtadia to a mile. But Herodotus expreſſly refers to the diſtance travelled by a foot meſſenger, not to the march of armies. When the
