To face pnffe 37. J 



TTI.— i. 



BIOTITE SCHIST, >: 30, 

 MABURIMA, ARUKA RIVER. 



Phuto !>!/ J. IVilliamf. 



EPIDIORITE, X 30, 

 TURESI, MAZARUNI RIVER 



{Sec l-AOK 44). 



Fhiifo by J. WiUiamf. 



