190 



THE ROYAL SOCIETY OF CANADA 



f7 <« 13 



Figure 2 



2. Influence OF Temperatures on the Adsorption of Gases 

 Experiments on the adsorption of air were carried out at three 

 temperatures: 20°C., -78°C. and -190°C. The first temperature 

 was obtained by immersing the hgnite tube in a water bath contained 

 in a Hquid air fîask and kept constant at 20°C. ; the second, by using a 

 mixture of solid carbon dioxide and ether, the carbon dioxide being 

 added at intervals to keept it at the same temperature, and the third, 

 by using liquid air. Before it was admitted to the apparatus, the air 

 was carefully dried by phosphorous pentoxide. 



The following table gives the results of the experiment with the 

 lignite at 20°C.: 



Table II 



