Page:Arrian's Voyage Round the Euxine Sea Translated.djvu/180

Rh common cubit, the royal foot could be only two digits longer than the common foot.

It hould however be remarked, that Pliny, when decribing the extent of the circuit of the Walls of Babylon, lays it down as being ixty miles, which correponds with the 480 Iiadia of Herodotus, reckoning thee at eight to a mile, which is very different from Mr. Barré's calculation.

In like manner the city of Nineveh is decribed in the book of Jonah as being very great, and about three days journey in circuit, ( It i agreed that 20 are the allotted meaure for a day's journey, o that the whole amounts to 60  equal to the 480 tadia aigned by Diodorus for the circumference of that city.

The promontory of Sunimn is, according to Strabo, 330 tadia from Piræus; and, according to Pliny, 42 Roman miles. Now 330 ÷ 8 = 41.25, very near Pliny's calculation, at eight tadia to a mile.

Arrian, in the Periplus of the Euxine ea, ays, that the ditance from the Temple of Jupiter Urius to the river Rhebas is 90 tadia. This meaures on the large map of the Propontis about nine Englih miles; to which if we add ⅛, for the winding of the road, we hall have about 89.87 Olympic tadia, almot exact to Arrian's calcu-