1891.] 



On certain Ternary Alloys 

 FIG. 6. 



187 



Ti 



These two solubility curves closely resemble those of the metals in 

 general features, rising upwards at an accelerating rate, so that the 

 es are somewhat concave upwards. 



Fig. 7 shows the same results plotted in accordance with Sir G. G. 

 Stokes's triangular method of graphical representation, the two 

 branches of the critical curve being represented by the continuous 

 lines, and the ties by the dotted lines. 



The point P represents the mixture containing 



Acetic acid 50 per cent. 



Water 25 



Chloroform 25 



ich, as above stated, was homogeneous, not separating into two 

 : erent fluids ; consequently P is a point outside of the space repre- 

 .ting " ideal " mixtures bounded by the base line and the two 

 ranches of the critical curve. Just as in the case of fig. 2, the 



direction of slope of the ties obviously indicates that the lighter fluid 

 ays contained the larger proportion of acetic acid ; but the varia- 

 n in the difference between the proportions of acetic acid in the 

 o fluids is not so clearly indicated as by the ordinary method of 



plotting shown in fig. 4, where the difference in acetic acid per- 

 mtage between the two fluids visibly attains a maximum and then 

 sreases. 



