OF THE MANUFACTURK OF OAS. 



106 



ILLUMINATING POWER OF GAS. 



Illuminating power of total gas when burnt at the rate of 

 5 feet per hour = 282.3 sperm candles. 



PER CENTAGE COMPOSITION OF GAS. 



Hydrocarbons and olefiant gas equivalent to 13.15 



per cent, defiant gas 9.04 



Light carburetted hydrogen 26.84 



Hydrogen 44.26 



Carbonic oxide 19.39 



Carbonic acid .47 



100,00 



Amount of carbonic acid generated by 1 volume of conden- 

 sible hydrocarbons = 2.91 volumes. 



ACTUAL CONSTITUENTS. 



Cubic feet. 



Hydrocarbons and olefiant gas 66.9=97.3 olefiant gas. 



Light carburetted hydrogen 198.6 



Hydrogen 327.5 



Carbonic oxide 143.5 



Carbonic acid 3.4 



Aqueous vapour 11.1 



761.0 



Hence — 



Gain in illumuiating power by the 



employment of water gas = 



Gain in quantity of defiant gas ... 

 Gain ia total quantity of gas 



Per owt. 



30 candles. 



11.4 cub. ft. 



236 " •* 



Per ton. 



600 candles. 

 228 cub. ft. 

 4720 " « 



Per cent. 



11.2, 

 13.3 

 45.8 



