( 702 ) 
T 
of ? this value of = becomes but little higher. But e‚ and e‚ might 
k 
be such for higher value of m, that v approaches to 3b and 7’ to 
T;.; this might be the case for n — 10. So we see here the following 
possibilities for the phenomena of non-miscibility, dependent on the 
value of ». For low value of n, contact of the said two surfaces may take 
place at so low a temperature that observation is impossible on account of 
the occurrence of the solid state. For increasing value of 7 this tempera- 
ture rises, and for a certain value of n, it may have risen to */, or '/, Tk 
and so the observation will no longer be prevented by the appearance 
of the solid state. As, if contact takes place of the two surfaces at 
certain temperature, two plaitpoints make their appearance already 
at lower temperature, which vanish again at higher temperature than 
that of the contact, three-phase-pressure will exist between two tempera- 
tures. A precise determination of the value of m at which this is the case, 
is not possible, if it were only on account of the fact that we have 
not been able to determine what relation exists between the tempe- 
rature of contact and that at which the double plaitpoint begins to 
appear or disappears, and moreover because we have not been able 
to determine how long the double plaitpoint must have been present 
before the plaitpoint appears or disappears on the binodal line. But 
for small value of n the lowest temperature at which non-miscibility 
sets in, can certainly not be observed, at least not if the cause of 
non-miscibility is to be ascribed to the circumstance discussed here. 
So in the 7',z-projection there is only a single point for which 
the value of z will be found in the left half, in the case discussed 
here. But if we besides draw the 7e-projection of the plaitpoints 
which are the consequence of the existence of the point of contact 
dy dy . 
of == 0 and Pept we obtain again a closed curve. Probably 
the projection of the point of contact lies, especially as regards the 
value of 2, very eccentrically with regard to this curve — possibly 
even to the right outside it. The lefthand branch of this curve is the 
projection of the irrealisable plaitpoints, and these will always have 
considerably moved to smaller values of 2. But if the projection is a 
closed curve, they must rapidly approach the points of the righthand 
branch at higher temperature. However, another case may be expected. 
In the case that the projection of the plaitpoints remains below the 
curve indicating the course of 7, the closed curve is to be expected — 
but if the value of 7 should rise so high that the curve 7% = f(a) 
would be cut, the lefthand branch of the projection would meet the 
ordinary plaitpoint, which approaches from the side of the component 
