252 COMPARISON OF THE FRENCH METRE 



A decagramme is 6 dwts. 10.44 gr. tr. ; or dr. iifl. gr. 4.41- 

 apoth. ; or 5.65 dr. avoird. A hecatogramme is 3 oz. 8.5. 

 dr. av. A chiliogramme is 2lbs. 3 oz. 5 dr. av. A myrio- 

 gramme is 22!bs. 1.15 oz. av. 100 myriogrammes are 1 ton 

 wanting 32.8lbs. 



Agrarian meqfures. 



Agrarian mea- Are, 1 fquare decametre - 3,95 perches. 



Hecatare 2 acres, 1 rood, 35.4 perches. 



lures, 



for fire-wood. Deciftcre, Y l- flere 



» T^ 



Money. 



Stere, 1 cubic metre 



Centime, 1 gramme 

 5 centimes, or fous - 

 Decime 

 2 decimes 



Silver -j% or 



I4./&*. 



Franc, 5 grammes, .... 3 dwts. 5.2 gr. 

 6 francs, - 16 dwts. 2.1 gr. 



The franc is nearly the fame with the livre tournois, and 

 worth about lOd. Bolton's penny weighs 435 gr. ; his half- 

 penny 165 ; a milling nearly 93 gr. and is |£ fine. 

 Length of It appears from Mr. Borda's experiments, that in latitude 



pendulum, &c. 450^ a pendulum of the length of a metre would perform in a 

 vacuum 861 16.5 vibrations in a day : the length of a pendu- 

 lum being fuppofed to increafe with the latitude, in the pro- 

 portion of the fquare of the fine of the latitude, multiplied by 

 £)Q0567, while the time of its vibration remains unaltered. 



Y. 



VIII. On 



