Fig. 4. 



2. Now we assume again that the curves ed and rs (fig. 1) meet 

 one another fii'St ir) a point of the side BC ; this point of inter- 

 sei'tioii siiift.s then on further decrease of P into the triangle. Under 

 a definite pressure we want a second point of intersection to be 

 formed by the coincidence of d and s (fig. 1). The two points of 



Fig. 5. 



Intel-section approach one another on further decrease of pressure, 

 in order to coincide at U^st in a point m. It is evident that m is a 

 point of minimumpressure of the saturationcnrve under its own 

 vapourpressure-, it is represented in tig. 5 by curve iiambv, tlie 

 corresponding vapourcurve is the side CA. It is evident that tiie 

 vapour 7;ii , which can be in equilibrium with the liquid ?/?, is 

 situated on the line Bin. 



3'''. We can assume also that tlie curves ed and rs ^fig. 1) meet 

 on decrease of pressure first in a point M, which is situated within 

 the triangle. On further decrease of pressure then two points of 



