Page:Arrian's Voyage Round the Euxine Sea Translated.djvu/147

denarii, and found the beaded circle impreſſed on them to coincide very nearly with Mr. Greaves's proportion of the digitus.

Dr. Murdoch himſelf cannot diſcover the length of the Roman itinerary foot, as he calls it, from any of his calculations. In the eſtimation of the diſtance between Bologna and Modena, he computes the Roman foot at one-ſixty-fourth, or a quarter of a digit, leſs than the Engliſh : in reckoning the diſtance between London and Verulam, he makes it to be one-thirty-ſecond, or half a digit, leſs; which differs very little^[1] from the proportion aſſigned by Mr. Greaves.

Again, he computes the Roman itinerary foot to be to the Engliſh as forty-five to forty-four, or one-forty-fourth part greater. Such confuſion ariſes from unauthoriſed ſuppoſitions. The Roman itinerary foot, as diſtinguiſhed from the common Roman foot, is to me as viſionary as the pes monetalis of Athens.

Table of the dimensions of the beaded circle on the circumerfernce of ſeveral Roman Coins.

Gold Coins.	Diameter of the beaded circle in decimals of an inch
Veſpafian	.710
Trajan	.740
Trajan	.725
Hadrian	.740
Reverſe	.725
Silver Coins.
Conſular	.695
Conſular	.725
Conſular	.725
Divililius	.72 5
Divus Augutius	.725
Claudius	.695
Domitian	.725
Domitian	.700
Domitian	.690
Domitian	.710
Trajan	.710
Trajan	.710
Hadrian	.710
Hadrian	.705
Marc. Aurelius	.725
Alex. Severus	.71	bad ſilver
Gordian	.775	bad ſilver
Philippus	.820	bad ſilver

1. 967:1000::31:32.005.

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