Rankin and Wright — Ternary System CaO-Al. 2 0-SiO n _. 49 



Fig. 15. 



J5 





8 



8 



? 









jj 



1 



1 



C 







5 













4- 







_ 































< 





< 









O 





o 









01 





o 









\ CO 





+ 

 o 

 I/) 































i/> 







< 



o 





o 







o 



CD 



l/> 

















<+^> ; 





<\j 



^ 





o 



CO 



> 







< 





o 









o 

 to 



§ 





g 



8 



o 





1 I 1 1 - 1 1 



' m>\ 



1 







O >* 

















< \ 









,j CO N 









5 o 













o 

 < 



c 







«j 



in 







5 



+■ 







+ 



o 







O 



UO 



/ 5 





O 



<5. 



ID 



o 



=3. 











/ o 

















/ 1/3 









/ to 









/ o 









— ^-J 1 1 1 1 L 



1 



1 





g. o 



a . 



Jh 



o 



bj 



• rH 



osCQ 





c» 



^ 





fl 



O 



c 



7 



■+3 



«| 



.~ 



O 



s 



CCj 



cc 



u 



o 





rt 





o 



t ) 



a 









9 



<1 







o 



cfl 



cd 



f-i 





p. 



(M 



fi 



r3 



a> 



PI 



H 



C3 









O 



10 



CI 



^ 



<1 





»o 



c 



O 



(E| 



oi 





U 





CO 



Am. Jour. Sci. 

 4 



-Fourth Series, Vol. XXXIX, No. 229.— January, 1915. 



