On Oil and Oil-gas. 80 
having its due charge of atmospheric air, I 
put 102 water grain measures of the above 
(T. H.’s) oil-gas, being previously washed 
in lime-water. The bottle of water was 
briskly agitated for one or two minutes, occa- 
sionally relieving the stopper under water. 
On turning out the residuary gas there were 
62 measures, which by analysis were found 
to consist of 27 azotic gas, 6 oxygen and 29 
combustible gas, which last required 56 oxy- 
gen for their combustion. Again, into said 
water put 130 oil-gas: agiteted well, there 
were left 80 measures, which by analysis ex- 
hibited 163 azotic, 33 oxygenous, and 60 
combustible gas; these last required [10 oxy- 
gen for their combustion. In the next place, 
108 oxygen of 93 per cent. purity, were put 
into the water and well agitated: Out 101 
measures which by analysis consisted of 14 
azote, 56 oxygen, and 31 combustible gas; 
which last required 83 oxygen for their com- 
bustion, and produced 52 carbonic acid. 
Here it is obvious that the gas expelled 
from the water was richer than the original, or 
contained more superolefiant, both from the 
increase of carbonic acid and of the requi- 
site oxygen. 
Upon reviewing the whole of the experi- 
ments connected with this subject, I think it 
