318 



The values of "/yj in our above formulae always refer exclusively 

 to the liquid mixture, even for solid components, for as we already 

 remarked above: this solid component must first be thought liquid, 

 so that after all we have always to do with liquid mixtures. 



Now that through the formulae derived by us above, the absolute 

 values of w and Ay are known, which Mr. K.\tz so eagerly desired, 

 the problem has become clearer. Also when the components should 

 be associated, everything remains essentially the same, as I will 

 shortly show in a concluding paper. But then the preponderating 

 influence of L.v will still be more pronounced, in consequence of 

 the great variation of volume on dissociation of the double molecules. 



And finally as regards the "important as yet undiscovered prin- 

 ciples of the laws that govern molecular attraction" — 1 believe 

 that this principle too was solved long ago ^). This subject will also 

 be discussed more fully in our concluding paper. 



Tavel sur Clarens {Suisse), September 1922. 



1) Compare my papers in These Proc. Vol. XVIII N^. 8, p. 1220—1235, and 

 following numbers; in the Journ. de Ch. physique 14, p. 1 et seq. (1916); in the 

 Z. f. anorg. und allg. Chemie 104, p. 57—156 (1918); in the Gh. Weekbl. of 

 1918 (p. 1124); in These Proc. Vol. XXI N". 5, p. 644—655, and the J. de Ch. 

 ph. 16, 411 (1919), which possibly hare escaped Mr. Katz's notice. 



