114 



THE ROYAL SOCIETY OF CANADA 



10 



to 



/' 2 3 *^ 5- 



VOLUME OF ÙAS 

 u/vjr-/2ooc^. 



Figure 3 



If the nitrogen dissolves in the methane the solubility will in- 

 crease with the partial pressure. This will account for the curve 

 turning over in the horizontal direction. 



Equations of the Pressure Curve 



Attempts were made to get the equation of the pressure curve in 

 the hope of finding out something about the solubility of the nitrogen 

 in the methane. In the case of the curve marked BI No. 2, the read- 

 ings were carefully taken. The units of volume were passed in at 

 regular intervals of one minute and the pressures read at correspond- 

 ing intervals, usually at the half minute. The readings are as follows, 

 and if the increase of pressure per unit volume is denoted by p it will 

 be noted that over a large part of the curve P/? is approximately 

 constant where P is the average pressure for the interval. 



