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for the more ready taking off both the English and 
\ Paris Foot from the fame : After which, both this 
Rod and the T wo Marc Weight fent over from France , 
were, together with the other Particulars before- men- 
tioned, carefully laid up in the Archives of the Royal 
Society, where they now remain, as their Duplicates 
do in thofe of the Royal Academy of Sciences at 
‘Paris : But as, before they were fo laid up, an accurate 
Examination and Comparifon of them was made by 
Dire&ion of the Council of the Royal Society, 
the Refult of the fame is here fubjoined as follows : 
That is to fay, 
1. The Paris half Toife, as fet off on the Standard 
in the Royal Society, contains Englijh Inches by 
the fame Standard 38.355. Whence it appears, that 
the English Yard and Foot is to the Paris half Toife 
and Foot, nearly as 107 to 1 14. For as 107 to 1 14, 
fo is 36 to 3 8.3 5 5 14, 
2. The Paris Two Marc, or 16 Ounce Weight, 
weighs English Troy Grains 7560. Whence it ap- 
pears, that the Englifh Troy Pound of Twelve Ounces 
or 5760 Grains, is to the Paris Two Marc or 1 6 Ounce 
Weight, as 16 to 21: That the Paris Ounce weighs 
Englijh Troy Grains 472.5, and that confequently 
the Englijh Troy Ounce is to the Paris Ounce, as 64 
is to 6 3 . 
3. The Eng/iff) Avoirdupois Pound weighs Troy 
Grains 7004, whence the Avoirdupois Ounce, whereof 
16 make a Pound, is found equal to 43 7-7 5 Troy 
Grains : And it follows of confequence, that the 
Troy Pound is to the Avoirdupois Pound, as 8S to 
107 nearly j for as 8 8 to io7,fois 5760 to 7003 .636 $ 
that the Troy Ounce is to the Avoirdupois Ounce, as 
B b 80 
