38t ON OXiCARliURETTED HIDROGEN. 



In the first experiment, 5.5 measures of oxigen gas werit 

 to the formation of carbonic acid, and 3*74 were found un- 

 conibined, after the explosion, by the test of nitrous gas. 

 Kewtnflam- Hcncc it follows, that 17*4 measures of oxigen gas, cora- 

 mable^gas bincd with 33*2 measures of olcfiant gas deprived of a por*. 

 tion of its carbon, and formed a new inflammable gas, 

 amounting to 82*7 measures in bulk, or almost double the 

 bulk of the two gasses that went to fCMTii it. 

 This examined. The new inflammable gas being examined by a new mix- 

 ture with oxigen gas, and a new detonation, was found to 

 consume 73 per cent of oxigert gas, and to form ^5 per 

 cent of carbonic acid. 



Hence the 82*7 measures would have formed - 45*5 

 But 33*2 measures of olefiant gas would have formed 69'0 



Difl'erence, 23-5 

 From this It would seem, that about |th of the carbon 

 remoTcd by the first explosion is converted into carbonic 

 acid, while |ths precipitate in the state of a black powder, , 



33*2 cubic inches of olefiant gas weigh 9*87 grains. 

 The carbon in 23*5 cubic inches of carbonic 

 acid weighs --------- 3-05 



Residue, 6'S^ 

 17.4 cubic inches of oxigen weigh - - 5*31 



Hencce the weight of 82*7 cubic inches of 



the^ new gas cannot exceed - - • - 12*1.3 

 Hence 100 cubic inches of it would weigh 14*6^ gfaini, 

 and its specific gravity cannot exceed 0*4808. 



This is on the most unfarourable supposition, that no 

 water whatever is formed during the first combustion. If 

 water be formed, it is obviously lighter than we have made 

 it. It is clear, therefore, that this new-formed gas, to which 

 the name of oxicarburetted hidrogen may with propriety- 

 be given, is quite different from carbonic oxide gas, the 

 specific gravity of which is O'QSG, or almost double of our 

 new gas. 



9-87 



