B 
Fig. 2. 
peculiatly inflected form of the three-phase region. This has been 
rendered easily recognisable in Fig. 2 by the additional lines that 
connect the coexisting phases at each temperature. For further 
elucidation the lines indicating vapour compositions are shown by 
—-— lines, Pv sections are drawn at some temperatures and the 
Tx melting line has been placed in the upper plane of the figure 
for the pressure applying to that plane. 
2. The result of the previous investigation showing that this figure 
really represents the normal figure for a system with a continuous 
series of mixed crystal without a minimum or maximum, makes us 
expect a peculiar configuration for the system Bromine-lodine*) 
wherein probably a compound IBr occurs; this compound must, 
however, be credited with the property of being continuously 
miscible in the solid phase with its products of dissociation, the 
1) P. C. E. Meervm Terwoert, Dissertation Amsterdam 1904, Zeitschr. f. anorg. 
Chem. 47, 203 (1905). 
