887 



The second column gives the pressures in uim. niercmy, all 



pv 

 reduced to the same temperature. Ihe third column gives — — and 



760 



the last 



pv 

 760 



RT for the gaseous state. 



In fig. 3 is drawn as a function of n for each of the 



'' 760 ' 



mixtures for the purpose of determining the pressure at which the 



condensation begins. 



0,3200. 



0,2800 



0,2600' 



0,2400. 



100 200 300 400 500 600 700 800 900 1000 1100 1200 

 rig.3. 



Table 8 contains these pressures and the corresponding temper- 

 atures; it also gives the volumes of the saturated vajjour expressed 

 in the theoretical noi'mal volume as unit. 



When loci- /> was represented as a function of ƒ ( y, ) . a set of 



straight lines was obtained, in this case also. As before, the values 

 which served for the construction of the final diagrams were derived 

 from these curves. 



It may be mentioned, that with the last mixture of 24.3 % ^ ^^ 

 a temperature very little below 80°. 50 the solid began to separate out. 



57 



Proceedings Royal Acad. Amsterdam. Vol. XVUl. 



