570 
ments and calculations, the French metre 
or ftandard appears to be equal to 39,3710 
Englifh inches, at 62°, which is the tem- 
perature univerfally employed in the com- 
parifon of. Britith ftandards. Allowing 
the accuracy of the French meafurements 
of the arc of the meridian, the whole cir- 
cumference of the globe will be 24855,43 
Englith miles, and its mean diameter 
7911573. Taking the ellipticity at s45, 
the axis wil be nearly 7893,5, the equa- 
torial diameter 7928, and the diameter of 
a fphere of equal folid content about 7916 
miles. 
As long, therefore, as the Englith 
fiandard continues to be reduced to this 
temperature, we muft confider the metre as 
equivalent to 39,3710 inches. Upon thefe 
authorities, it will be of ufe to give the 
following tables of the principal meafures 
and weights now uled in France, with the 
correftions which this laft comparifon has 
introduced into it. 
Meafures of Length, the Metre being at 52°, 
the Foot at 62°. 
Englifh Inches, 
Millimetre - . - :03937 
Centimetre - - - 39372 
Decimetre > - - 3-93710 
Metre . - =  39+37100 
Decametre > “5 393-71000 
Hecatometre - - 3937-10000 
Chiliometre - = 39371-00000 
Myriometre - -  393710.00000 
MY, FoF ae 
A decametre is © 0 10 2 97 
A hecatometre oe 109) «x 
A chiliometre O. 44 215° 2 30.2 
A myriometre 6.25256 8G 
3 chiliometres are nearly 5 miles. 
Meafures of Capacity. x 
Cubic Inches E. 
Millilitre <« > - 206103 
Centilitre - - -61028 
Decilitre - - e 6.10280 
Litre, a cubic decimetre - 61.02800 
Decalitre - . 610.28000 
Hecatolitre - ” 6102.80000 
Chiliolitre = - 61028.00000 
Myriolitre as - §10280.00000 
A litre is nearly 24 wine pints. Four- 
teen decilitres are nearly three wine pints. 
A chiliolitre is one tun, 12.75 wine gal- 
lont, a - 
Proceedings of Learned Societies. 
Peights. 
A gramme is the weight of a cubic 
centimetre of pure water ar its maximum 
of denfity. | It has been found equal to 
18.327 French grains, of which 576 made 
472.5 Englith; and 489-5058 grammes 
make a pound of the ftandard of the mint 
at Paris. 
Milligramme = = 
001 $4. 
Centigramme - ° 01 544 
Decigramme i, eee 1.5444 
Gramme = ° 15.4440 
Decagramme_ - = 1544402 
Hecatogramme - - 1544.4023 
Chiliogramme = + = 154.4.4.0234 
Myriogramme + . 354.440.2344, 
A decagramme is 6 dwts. 10.44 gf 
tr.; dr. 1f%. gr. 4.44 apoth. ; or 5.65 
dr. avoird. A hecatogramme is 30z. 8.5 
dr. av. A chiliogramme is 2lbs. 302. 
sdr. av. A myriogramme is 22Ibs. 
I.150Z. aV. YOO myriogrammes are = 
tun wanting 32.8lbs. | . 
Agrarian Meafures. 
Are, x {quare decametre 3.95 perches. 
Hecatare 2acres, 1 rood, 35.4 perches. 
For Fire-wood. _ 
Deciftere, +45 ftere 3.5317 cub. f. E, 
Stere, 3 cubic metre 35.3171 cub. f. 
MONEY. Copper. 
ss E. Grains. 
Centime, 1 gramme — - = 15.4 
5 centimes, or fous = - 7-6= 
Decime - - - 1544 
2 decimes . - - 308.3 
Silver #5 or £8 Fine. 
Franc, § grammes, - 43 dwts. 5.2 gr. 
5 francs, + - 16 dwts. 2.1 gr. 
The frane is nearly the fame with the 
livre Tournois, and worth about rod. 
Bolton’s penny weighs 435 gr.3 his half- 
penny 165; a fhilling nearly 93 gr. 27 
fine. . 
It appears from Mr. Borda’s experi- 
ments, that in latitude 45°, a pendulum 
of the length of a metre would perform in 
a vacuum 86116.5 vibrations in a day: 
the length of a pendulum being fuppofed 
to increafe with the latitude, in the pro- 
portion of the {quare of the fine of the la- 
titude, multiplied by .000567, while the 
time of its vibration remains unaltered.— 
See, on this-fubjeé&t, Monthly Magazine, 
vol. ili, p. 432, and vol. viii. p. 381. 
[July ae 
E. Grains. — 
