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THE ROYAL SOCIETY OF CANADA 



Table VIII 

 Dry Oxygen 



Table IX 

 Moist Oxygen 



From the above tables, the following conclusions may be drawn: 



1. Oxygen is adsorbed much more readily than nitrogen. 



2. The presence of water vapour decreases the amount of gas 

 adsorbed. This is shown from the last two tables. The weight of 

 the amount adsorbed is not increased and the weight includes that of 

 the water vapour taken up by the samples. 



3. No permanent adsorption takes place since there are but few 

 cases where the last weight is greater than the first, and these may be 

 due to experimental error. 



4. Chemical action may be taking place in the case of oxygen. 

 The fact that in most cases the last weight is less than the first indi- 

 cates that the oxygen combines with the lignite forming carbon 

 dioxide, which is given off when the lignite is heated, making the 

 sample lighter. 



This work was done under the direction of Professor E, F. Burton. 



