396 



Prof. V. B. Lewes. 



[Mar. 7, 



The original gas, however, only contained 96 '7 per cent, of 

 ethylene, so that the percentages of unsaturated hydrocarbons decom- 

 posed are : 



Table II. Temperature, 900 C. Rate of Flow, 15 c.c. 



On now calculating the percentage for the change in volume, we 

 obtain the following figures : 



The original gas contained 96' 7 per cent, of ethylene, so that the 

 percentages of unsaturated hydrocarbons decomposed are 



