[ 55 5 3 
Again : The {ingle Averdupois Standard Tound 
weighed, on a Medium of Two Experiments, coun- 
terchanging the Weights, as before, 14 Troy Ounces , 
11 Tenny-weight, 16 j- Grains : Or was equal to 
7000.5, and the Ounce to 437-5 3 Troy Grains. 
Again : This Standard Averdupois Tound , at a 
Medium as before, outweighed the Royal Society’s 
Averdupois Tound , by Two Grains and One-eighth ; 
And the Troy Standards of Eight and Four Ounces , 
taken together, outweighed the Royal Society's 
Engle Troy Tound Weight, by Two Grains and One- 
eighth, at a like Medium. 
At his Majesty’s Mint in the Tower of London , 
their Standard Weights are only a Pile of Troy hollow 
Weights, from CCLVI Ounces , down to the 16th 
•Part of One Ounce , without any Tenny or Gram 
Weights. The larger of thefe Weights, as low as 
the VIII Ounce weight, are marked with A. R. 
crowned, and infcribed PRIMO MAII, A 0 DNI. 
1707. A 0 REGNI Vi°. The IIII and the II Ounce 
Weights are only marked with^. R. crowned, without 
the Date; and the leffer have only the Exchequer 
Seal, and the Rofe and Crown, being the Mark of 
his Majesty’s Mint-, as all the larger ones have alfo. 
And here it was found by Mr. Jofeph Harris, one 
of the Ajfay-Ma/iers of the Mint , with a very curious 
Balance of his own, fixed in a Glafs Lantern, and 
which he was well allured might in luch Circum- 
ftances be depended upon to lefs than half a Gram ; 
and with the Addition of fo many Tenny and Grain 
Weights belonging to his Office as were needfary : 
that 
C c c c 2 
The 
