OF THE MANDFACTURE OF GAS. 



95 



BOGHEAD CANNEL. 



I.— WITHOUT WATER GAS. 



Cannel used 112 lbs. 



Gas produced 662 cubic feet. 



Coke left 36 lbs. 



Time occupied 2h,55m. 



ILLUMINATING POWER OF GAS. 



Total gas produced when burnt at the rate of 3 feet per 

 hour, yields light = 567 sperm candles. 



PER CENTAGE COMPOSITION OF DRY GAS. 



Hydrocarbons and defiant gas equivalent to 3 1' 11 



per cent, olefiant gas 24*50 



Light carburetted hydrogen 5838 



Hydrogen 10'54 



Carbonic oxide 658 



Carbonic acid 0*00 



JOOOO 



ACTUAL CONSTITUENTS. 



Cubic feet. 



Hydrocarbons and olefiant gas 1 59*7 =202*8 olefiant gas. 



Light carburetted hydrogen 380'8 



Hydrogen 68*8 



Carbonic oxide 429 



Aqueous vapour 9.8 



6620 



* The fish-tail burners used in these experiments were very small, and made 

 expressly for this exceedingly rich gas. 



