SPECIFIC HEAT OP GASES. 
185 
ances being the same, the specific correspondent heats were 
ms concluded. 
The specific heat of the 
air being - - - - - 1 0000, - -- -- - - - l.OOOfJ 
That of the same vo- * 
kime of hydrogen 0 9033 or the same weights 12 3401 
Carbonic acid - - - ]'25B3 - 0 8280 
Oxigen O 97G5 0 8843 
Azote 1-0000 1 03 IS 
Oxide of azote - - 1-3503 - - - - 0 S8/8 
Olefiant gas - - - - 15.530 1-5763 
Oxide of carbon - - 1-0340 - - - 1-0805 
Section III. 
determination of the specific Heat of the Gases ly another 
Process. 
If, instead of determining at what point every' current of hot 
las could maintain the temperature of the calorimeter stationary 
ve had proposed to inquire during what time it was neces- 
lary to mahe each curient circulate ; or, in other terms, how 
-nuch of each gas was necessary to communicate to our calori- 
meter a given number of degrees, supposing that each current 
ast the same number of degrees in passing the calorimeter j 
15 it not evident that the specific heat of each of the gases 
tvould be found in the inverse ratio of the quantity of gas 
wecessary to communicate to the calorimeter the same number 
itif degrees ? This consideration would furnish us with another 
nrocess to obtain the comparative specific heat cf each gas. 
^iiesides, an idea was long since entertained of determining the 
ueat which is disengaged underany circumstances, by an analogous 
)t>rocess ; but there was one cause of error to struggle against, 
svhich materially affected the correctness of the results . In 
poroportion as the materials of the calorimeter itself were heated, 
I he air and the surrounding bodies would carry off a part of that 
heat. All that excess, therefore, which supplied it with caloric, 
k*'as not employed in raising its temperature j it became, 
therefore. 
