APPENDIX.
THE learned Biſhop of St. Aſaph, Dr. Horfley, in a note annexed to Dr. Vincent's Account of the Voyage of Nearchus, has expreſſed himſelf to be of a different opinion, reſpecting the length of the ſtadium, from the one above ſpecified. I ſhall take the liberty of examining briefly his Lordſhip's arguments; and muſt requeit the reader's patience, if I repeat ſome part of what has been urged in the foregoing Diſſertation.
He begins with obſerving, that the circumference of the earth amounted, according to Eratoſthenes's calculation, to 252,000 ſtadia; and, according to Ariſtotle, to 400,000 ſtadia; and infers from thence that the Radium of Ariſtotle was to the ſtadium of Eratoſthenes as 252 is to 400, or very nearly as five to eight.
But this propoſition takes it for granted that Ariſiotle and Eratoſthenes agreed in opinion reſpecting the dimenſions of the earth, and differed only in reſpect to their eſtimations of the meaſure which each of them reſpectively employed; a poſition which can by no means be admitted.
It
