5l8 ON OLEFIANT GAS. 



(8.) When left in an open vessel, it evaporated 

 completely, leaving only a green trace. 



From these properties, it is obvious, that the li- 

 quid in question does not belong to the class of 

 oils. It is a substance of a nature quite peculiar, 

 and seems to consist of the two gases simply com- 

 bined together. It has considerable resemblance, 

 at least in taste, to the pyro-acetic spirit of Mr Che- 

 nevix. 



4. When olefiant gas is mixed with thrice its 

 bulk of oxygen gas, it detonates very loudly, when 

 an electric spark is passed through it, and burns 

 with a strong white flame. According to Mr 

 Dalton, it consumes exactly thrice its bulk of oxy- 

 gen gas, and forms twice its bulk of carbonic acid. 

 My experiments, as will appear from the follow- 

 ing table, very nearly coincide with his. The gas 

 used contained 16 per cent, of common air, and 

 the oxygen gas was mixed with 11 per cent, of 

 azote. 





Measures of 

 olefiant gas. 



Measures of 

 oxygen gas. 



Residue af- 

 ter combus- 

 tion. 



Do. washed 

 in lime-wa- 

 ter. 



Measures of 

 nitrous gas 

 added to do. 



Residue. 



I 



20 



59 



45 



10 



42 



44 

 27 



2 



3 



20 



60 



45 



9 



2 3 



20 



57 



42 



8 



2 3 



27 



