104 



CONTRIBUTIONS TO THE KNOWLEDGE 



ILLUMINATING POWER OF GAS. 



Illuminating power of total gas when burnt at the rate of 5 

 feet per hour = 252.3 sperm candles. 



PER CENTAGE COMPOSITION OF GAS. 



Hydrocarbons and olefiant gas equivalent to 16.94 



per cent defiant gas 9-68 



Light carburetted hydrogen 41.38 



Hydrogen 33.30 



Carbonic oxide 15.64 



Carbonic acid 0.00 



100.00 



Amount of carbonic acid generated by 1 volume of conden- 

 sible hydrocarbons = 3.50 volumes. 



ACTUAL CONSTITUENTS. 



Cubic feet. 



Hydrocarbons and olefiant gas 491=85-9 olefiant gas. 



Light carburetted hydrogen 2100 



Hydrogen 168-9 



Carbonic oxide 79*4 



Aqueous vapour 7.6 



515.0 



II.— WITH WATER GAS. 



Cannel used 1121bs. 



Gas produced 751 cubic feet. 



Coke left 74 lbs. 



Timeoccupied 3h. 25m. 



