L 511 ] 
And as the cube of the Paris foot, is to the cube of 
the Roman foot, fo are 80784 Paris grains, to 61725! 
fuch grains, the weight of the fpring- water contained 
in the cube of half the Roman foot, . 
But 617251 Paris grains, are equal to 50634, 
T roy ; therefore the Roman Pound, according to this 
calculation, fliould weigh 5063* Troy grains, ex- 
ceeding that derived from the coins, but by 23^ fuch. 
grains. 
If, on the other hand, we take Fabretti’s Pound of 
5500 Troy grains (equal to 67045 Paris) and reckon 
the weight of a cubic Paris inch of fpring-water 374.; 
Paris grains (as before), a Congius of ten fuch Pounds 
will require a Roman foot of 1 001 fuch parts as the- 
Paris foot contains 106544 which exceeds any pro- 
bable meafure of that foot. 
Thus thefe heavy weights neither agree wjth the- 
Roman money nor with the Congius which is a- 
circumftance not eafily to be accounted for,, as the 
authorities for the larger Pound are indifputable, and’ 
we do not know that the Romans ufed two weights 
like our Troy and Averdepoids. 
The Denarius continued to be the current filver 
money of the Empire,, till Cjuftantine fubftituted the: 
Miliarenhs in its dead. 
The price of gold had been increafing a confider- 
able time before his reign, which made a new regu- 
lation of the money, necelfary. For this purpofe,, 
Conftantine divided the Pound of gold into feventy— 
two Solid! (3), which was a more commodious. 
(3) See the Theod, and Juftiaian Codes quoted in p. 504. 
' numbes^' 
