270 ON niE COMPOSITION OF ALCOHOL. 



These results show, that the 124*07 parts of oxigen gas, 

 w])ich disappeared to eftlect the combustion of 100 paiis of 

 oxicarbiiretted hydrogen were employed to form 78 parts of 

 carbonic acid gas, and to burn (124'07 — 78) X 2 rz 92*14 

 parts of bidrogen gas belonging io the oxicavbu retted hi- 

 drogen gas. Thus we find, that 100 parts of the latter 

 contain 2*57 parts of nitrogen gas. If by the rule of pro- 

 portion we estimate from this the results of 7199 cubic 

 inches of oxicarbu retted hidrogen gas, weighing 1786*6 1 

 grs, we shall find, that they would have produced by their 

 combustion 5615-2 cubic inches of carbonic acid gas, con- 

 taining 945*59 grs of carbon ; that the oxigen gas would 

 have burned 6633*2 cubic inches of hidrogen gas, weighing 

 212*44 grs; and lastly, that the whole of the oxicarburetted 

 Analysis of the hidrogen gas contains 1S5 cubic inches of nitrogen gas, 



hkliogea gas. ^eighmg 76*77 grs. 



If we add together the weight of the elements just cal- 

 culated, we shall have, in 1786*6l grs of oxicarburett^ hi- 

 drogen gas. 



Carbon 945*59 



Hidrogen 212*44 



Nitrogen 7677 



1234*80 

 Deficiency 551*81 



1786*61, 



The residuum of the combustion of the oxicarburetted 

 hidrogen gas appeared to me to be nothing but water, ex- 

 cepting the carbonic acid gas and nitrogen, that have been 

 mentioned. Thus the deficiency we find on adding toge- 

 ther the elements of this analysis xiiust be ascribed* to the 

 elements of water, which existed in the oxicai-buretted hi- 

 drogen gas not in the state of water or aqueous vapour, but 

 in a state in which they were united and as it were con- 

 founded with the other principles of this gas. If we substi- 

 tute for this deficiency therefore the elements of 551*81 grs 

 of water, we shall find, that the 1786'6l grs of oxicarbu- 

 retted hidrogen gas are composed of 



Carbon 



