methods would, therefore, render a correction to the two determina- 

 tions in question indispensable. A glance at the above table must 

 really lead us to the conclusion that if there is a difference between 

 the determinations in the two series, it will certainly be a slight 

 one, and that it can probably be accounted for by the above men- 

 tioned excess of pressure. Moreover the dynamic determinations yield 

 a very regular course of the P- 7-line, and it is just this regularity 

 that leads us to expect that the velocity of the homogeneous vapour 

 equilibrium will be great wdth respect to that of the evaporation, 

 because otherwise a variation in the rapidity of working, as was 

 already alluded to above, would ^probably have affected the regu- 

 larity of the observations. 



