110 Ferguson and Merwin — The Ternary System. 



agreement was found between the concentration relations, 

 and this fact may readily be gleaned from an inspection 

 of figs. 6 and 8. 



A maximum is shown on the line 8, 9, although it has 

 not been experimentally determined, the line 8, 9 being 



Fig. 13. 



Crisiobalifx, 



(3(h0-5iO 2 



1436 





5CaO-2MqO-6SiO z 



mt 



a.2 





CcdOSzO, 

 /540 j 



1475 JZT 



2:50 Jl 2ot5 





Zrt 3 0-5iS) z 

 1890 



2300 



CaO 

 £570 



Boundar/es , — Isotherms determined, Isotherms by extrapolation; 



-*-*-*- , ttZZA Solid solutions. 



O Compounds 



Fig. 13. — A similar diagram to that shown in 12 except that it is on a 

 mol. per cent basis. With this exception this paper has been written upon 

 a wt. per cent basis. 



too flat. The reasons for placing a maximum here will 

 be discussed under the monticellite solid solutions, and 

 similarly the peculiar relations exhibited by the lines 1, 3 

 and 13, 14, 15 will be discussed under the wollastonite 

 solutions. 



