1890.] 



On certain Ternary Alloys. 



29 



temperature increment. The values described below show that when 

 tin is also present the increment in solubility with higher tempera- 

 ture is in each case well marked. 



The following mean values were obtained from twelve compound 

 ingots, prepared by fusion for twenty-four hours at a temperature 

 averaging near to 800 of mixtures containing originally equal 

 weights of zinc and lead with varying proportions of tin : 



FIG. 1. 



Fig. 1 represents the curve illustrating the tin distribution derived 

 3m these figures, the numbers in the first column being plotted as 

 a,bscissffl and those in the last as ordinates (No. 1) ; the corresponding 

 mean cui-ve deduced from the observations at lower temperatures 



