1179 



Q 



Tlnp = — :i^CT 

 ' R 



(3) 



froin which follows that 7'lii/), represented as fmiction of 7', wil 

 yield a straight line. 





It is now interesting to examine what is found when Tlnp is 

 plotted against the temperature. 



The points obtained in this way lay so nearly on a straight line 

 that it was possible to unite nearly all the points on the same 

 straight line, as the line lik shows; a proof therefore that the heat 

 of evaporation in the examined temperature range is practical!}- no 

 temperature function. 



This has the advantage that the constant C may be graphically 



