Plate 39. 





m 



>&&^% 









- - r ■ ■"..-*.■ * 



B 



Types from the Kruger Alkaline Body. 

 A. — Porphyritic alkaline syenite ; one-half natural size. 

 B. — Nephelite syenite (salic variety) ; two-thirds natural size. 

 C. — Malignite ; two-thirds natural size. 

 25a— vol. ii— p. 448. 



