Hydrogen and Carbon. 265 
Of these experiments the Ist, 2d, and Sth are the only 
ones from which the proportion of oxygen consumed, and 
of carbonic acid formed, can be deduced. They were re- 
peated very often, in order to insure as much accuracy as 
possible. The following is the result which they give: 
eS 
Inflammable | Oxygen gas |Carbonie acid 
gas consumed | consumed, | gas formed. 
ee Oe A447 Nip ais i atk aed hits 4] nytt 
Tre Saeko ease: 
ph 6 R ere aes 
£ 21:6 4 Meg 23" | abatage! ei 
Wor: 205 104 aver. per oeae! 
9. From these experiinents it is easy to deduce the com- 
rer of this inflammable gas. Its specific gravity 
eing 0°855, 100 cubic inches of it, at the temperature of 
60°, and when the barometer stands at 30 inches, will 
weigh 16:93 grains, 
OF the 205 cubic inches of oxygen gas consumed, 104 
go to the formation of carbonic acid gas; the remaining 
101 cubic inches must have combined with hydrogen du- 
ring the combustion, and formed water. Hydrogen, in 
the gaseous state, combines with exactly half its bulk of 
oxygen gas; therefore the hydrogen, which went to form 
water in the present case, must have been equivalent to 
202 cubic inches. ; 
If we suppose with Saussure, (and it is the supposition 
least favourable to our-present purpose,) that carbome acid 
gas contains 27°5 per cent. of carbon, in that case the car- 
bon contained in 104 cubic inches of it must weigh 13°94 
grains. The weight of 202 cubic inches of hydrogen gas 
is 5°17 grams. Thus we have ascertained, that 100 cubic 
inches of the inflammable gas from stagnant water con- 
daing' Of catbon. oi)... 6. ede cee g 19°84 
OR is cab voles Male _&1T 
otal. ok. yale TST 
But the weight of 100 cubic inches of 
the gas is only Venswte Masniveen ry Teas 
So that the constituents found by ana- -—— 
lysis exceed the weight of the gas 1°48, or almost 1°5 
grain. . This 
