Dero 
In the same manner we find that a horizontal line which intersects 
the three sublimation curves must cut those of “+ F’ at a lower 
temperature than in the ease of the two other ones. 
Curve a"DSa" must, therefore, be situated in regard to the curves 
akFd and a'k'F'd’ as in Fig. 1. 
The regions F+ L and + L-+ G are separated from each other 
by means ofa curve, where + L appears in the proximity of an infi- 
nitesimal amount of vapour. We call this system /+ LH G° ;G 
signifies here that the other phases can be in equilibrium with a vapour 
of the composition G but that only an infinitesimal amount of that 
vapour is present. 
If, owing to solution of large quantities of / in a small quantity 
of L, the system #’-++ L + G° approaches to solid # + liquid F + G° 
the system + LH G®° then approaches the minimum melting 
point of the substance /. 
If from / + L +4 C° the solid substance /” is separated, so that 
the system AH #” + [+ C° is formed, we find ourselves in the 
minimum melting point of complex + LF’. 
Hence, the P, 7-curve of the system F+ L + G° proceeds in 
fig. 1 from S towards F. ; 
In the previous communication IV we have already extensively 
considered this system + 1+ G°. The liquid ZL of this system 
traverses at an elevation of temperature a straight line passing, in 
the v, y-representation, through the point #, for instance the line 
ZF or ZF in fig. 1 (IV). The P,T curve corresponding with this 
line is represented in fig. 4 (IV) by curve ZF or ZF. The curve SF must, 
therefore as a rule come into contact with the melting point line 
Fd in the point #. In fig. 1 it has been assumed that curve SF 
corresponds with branch ZF of fig. 4 (IV). 
The regions 4’ + L and #” + L + G are separated from each 
other by a curve #” + L+ G°; in a similar manner as above we 
find that this is represented by a curve SF’. In fig. 1 we have 
drawn the two curves S/F and SF’ in agreement with branch ZF 
of fig. 4 (IV); we might have drawn both or one of them also in 
agreement with branch ZF of this figure. The boundary curve of 
the regions JLG and #+G is formed by the system 
FHL? + G; that of the regions #” + L 4 G and F’ + G by the 
system /” + L°-+ G. L° signifies here that the other phases may 
be in equilibrium with a liquid £, but that only infinitely little of 
that liquid is present. In an analogous manner as above we find 
that the P, 7-curves of these systems are represented in fig. 1 by 
the curves SK and SK’. These curves meet in K and K’ the curves 
86* 
