On Oil and Oil-gas, 78 
Table giving an account of the results of 
analyses of four different specimens of oil-gas. 
From these it appears that as great differ- 
ences may be found in the qualities of oil-gas 
as of coal-gas; though all other circumstan- 
ces being the same, oil-gas is better, volume 
for volume, than coal-gas, by about 10 per 
cent, 
TABLE: Gas obtained fron Whale Oil. 
Entire Gas.* Residue left by chlorine. 
100 Volumes. s 
Wo. af 100 Vols. ys eo take | sive 
Sp. Gr.| lose by give || Sp. Gr. carb. 
saat chlorine. sae | sd : X98 | acid. 
1 9464 6 116 61 yAL07 94 46 
2 ,090 19 178 100 94400 | 108 58 
3 »758 22.5 | 220 130 36160 | 145 85 
4 906 38 | 260 158 ,6060 152 91 
I have occasionally repeated my experi- 
ments on oil-gas ever since the discovery of 
the superolefiant gas in Sept. 1820. Recently | 
(Sept. 1822) I examined a specimen of oil- 
gas furnished by my friend Thomas Hoyle, 
such as he commonly uses for the purpose of 
* That is the gas after having its carbonic acid extracted earefully 
by caustic potash. 
