06 



CONTRIBUTIONS TO THE KNOWLEDGE 



Amount of carbonic acid generated by 1 volume of hydro- 

 carbons, condensed by fuming sulphuric acid=2'54 volumes. 



II.— WITH WATER GAS. 



Cannel ased 112 lbs. 



Gas produced 1908 cnbic feet. 



Coke kit 37i lbs. 



Time occupied Shears. 



ILLUMINATING POWER OP GAS. 



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

 hour, yields light = 1068'4^. 



PER CENTAGE COMPOSITION OF DRY GAS. 



Hydrocarbons and olefiant gas equivalent to 1984 



per cent, olefiant gas I4'12 



Light carburetted hydrogen 22'25 



Hydrogen 4551 



Carbonic oxide 14 34 



Carbonic acid 3'78 



10000 



ACTUAL CONSTITUENTS. 



Cubic feet. 



Hydrocarbons and olefiant gas 265"5=373 olefiant gas. 



Light carburetted hydrogen 418"2 



Hydrogen 855'5 



Carbonic oxide 269'6 



Carbonic acid 710 



Aqueous vapour 28 2 



19080 



