Page:Arrian's Voyage Round the Euxine Sea Translated.djvu/152

Rh that map now before me, and this ditance meaures upon it 990 Olympic tadia, or 123 Greek miles and ¼. If we add to this ⅛, or 15 miles and ½, for the winding of the road, it will make up 139 miles and ¼, equal to 1114 tadia of 600 to a degree. Say then, 1114:600::1485:700.8, or almot 800 to a degree.,

Let us now ee what the number of tadia to a degree would be by Mr. Rennel's own numbers: 118. x 8. = 944:600::1485:943.850, both calculations very different from that of Mr. Rennel.

But the road which we may preume was uually travelled is as follows:

Add⅛%, or 131 tadia, for; winding of the road, and the numbers will he 1180 tadia. Say then 1180:600::1485:755.08, a number not very different from the one aigned by Mr. Rennel, but not deducible from thoe calculations which he has, pecified. The