Page:Arrian's Voyage Round the Euxine Sea Translated.djvu/184

Rh This intance then, if it proves any thing, proves the direct contrary to the opinion of Mr. La Nauze.

The ame gentleman again alledges, that Herodotus has etimated a hip's ailing for a day and a night at 1300 tadia; whereas Ptolemy allows 1000 tadia only; which difference he uppoes to be owing to their employing tadia of different lengths. But the voyage of Scylax, whoe date, though not acertained, is confeedly much prior to the age of Ptolemy, allows no more than 1000 tadia; and Herodotus peaks of 700 tadia as a long day's ail; and the Words, which aign 600 tadia as a night's ail, are in many copies wanting altogether.

The ancient writers made a great difference between a long day's ail and one of a common day. Xenophon ays, that a trireme galley could row, in a very long day, from Byzantium to Heraclea; which ditance is, by Arrowmith's chart of the Black ea, 131 Englih miles, or 1144 Olympic tadia. The longet day in that latitude is les than 15 hours, and the complement of this number to 24 would allow time ufficient to complete a voyage of more than 1300 tadia (uppoing them to be Olympic) in a day and night.

The lat intance I mean to cite from Mr. La Nauze does, I think, no credit to his candour. He ays, that Herodotus lays down 200 tadia 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 oldiers; which, he oberves, is jut ten tadia to a mile. But Herodotus exprely refers to the ditance travelled by a foot meenger, not to the march of armies. When the latter