gaseous mixtures , and its application to their analysis. 287 
washed to be 308, 1 proceeded at once to subject it to the new 
method of analysis. 
Having ascertained, by a previous experiment with Volta’s 
eudiometer, that 10 volumes of the gas required for saturation 
9 volumes of oxygen, I mixed 43 measures with 43 of oxygen 
(=41 pure) and passed a platinum ball, which had been re- 
cently heated, into the mixture. An immediate diminution 
of volume took place, attended with a production of heat, and 
formation of moisture. The residuary gas, cooled to the 
temperature of the atmosphere, measured 43.3 volumes. Of 
these 4.5 were absorbed by liquid potash, indicating 4.5 car- 
bonic acid, equivalent to 4.5 carbonic oxide ; the rest, being 
fired in a Volta’s eudiometer with an additional quantity of 
oxygen, gave 1 1 volumes of carbonic acid ; the diminution 
being 22 volumes, and the oxygen consumed 22 also, circum- 
stances which prove that 1 1 volumes of carburetted hydrogen 
were consumed by this rapid combustion. But of the loss of 
volume first observed, (viz. 86 — 43.5 — 42.5) 2.25 are due 
to the carbonic acid formed; and deducting this from 42.3, 
we have 40.23, which are due to the oxygen and hydrogen 
converted into water ; and 40.23x^=26.8 shows the hy- 
drogen in the original gas. But the sum of these numbers 
(26.8 -f- 4.3 4- 1 1) being less by 0.7 than the volume of gas 
submitted to analysis, we may safely consider that fraction 
of a measure to have been nitrogen. The composition then 
of the mixture will stand in volumes as follows : 
Hydrogen 
26.8 . . 
62.32 
Carbonic oxide 
4-5 • ■ 
. 10.30 
Carburetted hydrogen 
11.0 . . 
. 23.36 
Nitrogen .... 
0.7 . . 
1.62 
43 -° 
100. o 
