SOLIDIFICATION OF ALLOYS AND MAGMAS 581 
constant, the composition shifts along the line AC from A to C. At 
125° we meet the line JE. At this temperature, therefore, a binary 
eutectic mixture of bismuth and tin now separates out and the com- 
position of the mixture is displaced along the line JE until finally 
at point E corresponding to a temperature of 96°, the ternary eutectic 
FILEEZING FOINT DIAGRAM 
LEAOD-BISMUOTH-T1N ALLOVS 
268 250 225 200 /275 10 /33 /5° / 
Fic. 8 
Caeser Ceniy Bi tss per Cent iomeand 32-per cent. Eb freezes at 
constant temperature. 
This is about the limit of our capabilities in indicating the solidi- 
fication conditions. For a greater number of components, or where 
other factors enter, the representation becomes a space-problem of 
four or more dimensions, which is really beyond our powers. 
