454 Tables of Weights and Measures. [June, 



revolution and the new ones introduced by the revolutionary 

 government. 



] . Old French weights. 



The Paris weights used by all men of science before the revo- 

 lution are divided as toiluvvs. 



72 grains make 1 gros. 



8 gros 1 ounce. 



16 ounces 1 pound. 



A French denier or scruple is 24 grains : a marc is 8 ounces^ 

 or half a pound. 



From a paper in the Transactions of the Royal Society, (Phil. 

 Trans. 1742, Vol. xlii. p. 285) we learn that the Paris pound 

 weighs exactly 7560 Troy grains. Hence the French 



Grain is equal to 0*8203125 Troy grains. 



The gros 59-0625 



The ounce 472*5 



To reduce old French weights into English grains, we have 

 only to multiply them by these numbers respectively. 



2. Old French measures of length. 



12 lines make 1 inch. 



12 inches , ] foot. 



6 feet , 1 toise. 



It appears from an exact measurement made by Dr. Maskelyne^ 

 that at the temperature of 61" the Paris toise is equal to 76*7344 

 Bnglibh inches.* Hence we have 



The French line = 0*088813 English inches 

 inch = 1-065755 

 foot = 12*789060 



To reduce old French measures to English inches, we have 

 poly to multiply by these numbers respectively. 



3. Old French measures of capacity. 



4 poisons make 1 chopine. 



2 chopines 1 pinte. 



8 pintes I septier or velte, 



36 septiers 1 muid de vin. 



The pinte was legally equal to 48 cubic French inches. From 

 this all the other measures of capacity may be easily deduced. 

 A B'rench cubic foot is equal to 1*2105 English cubic feet. 

 Kence French cubic feet may be converted into English by 

 SH^ltiplying by that number. 



* Pliil, Trauso 1768, vol, Iviii. p, 2T4. 



