102 



CONTBIBUTIONS TO THE KNOWLEDGE 



PErf*CENTAGE COMPOSTION OF GAS. 

 Hydrocarbons and olefiant gas equivalent to 18.53 



per cent olefiant gas 14.48 



Light carburetted hydrogen 38.76 



Hydrogen 33,32 



Carbonic oxide 13.40 



Carbonic acid .05 



Nitrogen and Oxygen, (traces) — ^ 



100.00 



Amount of carbonic acid generated by 1 volume of conden- 

 sible hydrocarbons = 2.56 volumes. 



ACTUAL CONSTITUENTS. 



Cubic feet. 



Hydrocarbons and olefiant gas 68.2=87.3 olefiant gas. 



Light carburetted hydrogen 182.5 



Hydrogen 156.9 



Carbonic oxidei 63.1 



Carbonic acid .3 



Aqueous vapour 7.0 



478.0 



11.— WITH WATER GAS. 



Cannel used 1121bs. 



Gas produced 1320 cubic feet. 



Coke left 61 lbs. 



Time 3 hours. 



ILLUMINATING POWER OF GAS. 



Illuminating power of total quantity of gas burnt at the 

 rate of 5 feet per hour = 554.4 candles. 



