igo4\ 



Mills — Molecular Attraction. 



151 



Diagram 5. 



Ordinates give internal heat of vaporization in calories. Abscissae give 



difference of the cube roots of the densities of liquid and vapor. 



1.0 



O .2 .4 



Diagram 6. 



Ordinates give internal heat of vaporization in calories. Abscissas give 



difference of the cube roots of the densities of liquid and vapor. 



substances examined, usiu^ the values of L, — K x for ordi- 

 nates and the values of frlf — ^~D for abscissae. This is 

 desirable in order to give a more exact idea of the relative 

 extent and importance of the observations. For since neither 



