ORGANIC BODIES CONTAINING METALS. 
425 
by exploding a known volume of the original gas with excess of oxygen, and deter- 
mining the quantities of oxygen consumed, and carbonic acid generated. 
This determination gave the following numbers : — 
III. 
Observed 
volume. 
Temp. 
Difference of 
mercury level. 
Barom. 
Corrected vol. at 0° C. 
and 1 metre press. 
0 
mm 
mm 
Volume of gas used (moist) 122*0 
19*7C. 
563*0 
764*2 
20*95 
Volume after admission ofl ^ 
.r-w / • r 424*5 
0 (moist) . ... j 
20*0 
240*4 
764*3 
200*33 
Volume after explosion ) 
(moist) J 
] 363*5 
20*4 
301*0 
763*5 
150*40 
Volume after absorption] 
of CO2 (dry) . . . J 
) 296*7 
19*7 
366*4 
760*4 
109*03 
Volume after admission of] 
H (dry) J 
1 683*1 
21*7 
4*0 
760*8 
478*89 
Volume after explosion ] 
(moist) ..... J 
[ 368*6 
21*8 
293*3 
761*2 
153*09 
Hence 20‘95 vols. containing 20'62 vols. combustible gas, consumed 70*78 vols. 
oxygen, and generated 41*37 vols. carbonic acid: now as 20*62 vols. of this gas 
must contain, according to analyses Nos. I. and II., 17*10 vols. hydride of ethyl, 
which would consume 59*85 vols. oxygen and generate 34*20 vols. carbonic acid, it 
is evident that the volumes of oxygen consumed, and carbonic acid generated, by the 
gas absorbed by fuming sulphuric acid, must bear the following relation to each 
other : — 
Volume of eras absorbable ^ i • • j ^ j 
by fuming SO Oxygen consumed. Carbonic acid generated. 
3*32 ' 10*93 7*17 
1 ; 3*10 : 2*03 
The body removed by fuming sulphuric acid is therefore olefiant gas, 1 vol. of 
which consumes 3 vols. oxygen, and generates 2 vols. carbonic acid, numbers which 
correspond sufficiently with those obtained in the above determination. 
The last analysis can also be employed to control Nos. I. and II. ; for if we repre- 
sent the volume of nitrogen, contained in the original gas, by x, that of hydride of 
ethyl by y, and that of olefiant gas by z ; and further, the volume of mixed gases, 
oxygen consumed, and carbonic acid generated, respectively by A, B and C, we have 
the following equations : — 
'2ij-{-2z = C, 
3 I 2 
