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SCHREINEMAKERS 



AKT. H 



are unsaturated. If we imagine the liquid c represented by 

 point c in Fig. 10, then the points of 2-c represent unsaturated 

 hquids, whilst the points of c-2' represent supersaturated liquids 

 which pass into the system (11). 



(iii) T{X) > T(W) > T > T{e) (case of Fig. 7). Since 



Fig. 10 



both the substances W and X are now solid we may imagine 

 the systems 



L{u) + solid W, L(z) + solid X,] 



solid W + sohd X. 



(12) 



Besides the lines z'iX) discussed above, we must now imagine 

 in Fig. 7 also the lines u'(W) and {W)(X), and we can now 

 draw a tangent to the f -curve through each of the points (W) 

 and (X). If g' and h' are the respective points of contact, we 

 see that of all conceivable f-points of Fig. 7 only those of the 

 tangents (W)g' and h'(X), and those of the part g'h' of the 

 ^-curve, represent stable states. From this it follows that of all 



