( 904 ) 
PA’, is not to be expected. If this intersection took place, the 
demonstrated property only holds at lower temperatures. 
In fig.47 I have represented the 7,x-projection of the plaitpoint 
ie ft x) 
© ere) je e's 
Fig. 47. 
line. The point C again indicates the double point of the spinodal 
line and so also of the binodal line. So at the temperature of C a 
couple of homogeneous plaitpoints arise. So at higher ‘temperature 
there are two, the lefthand point of which belongs to the detached 
closed longitudinal plait, and the righthand point of which remains 
hidden under the equilibrium liquid—vapour, and vanishes only at 
the temperature of the point D in consequence of its coinciding 
with the hidden plaitpoint. At temperatures below 7, when the 
longitudinal plait intersects the transverse plait, there is of course 
a plaitpoint which does not vanish at the same time as the point 
