Geol. Mag. 1911. 



Plate I. 



[1737.] Fine- grained 

 Dolerite, Antelope Road. 

 x 20 diam. 



[1701.] Modified 

 Dolerite, with xenocrysts. 

 Kahlele's, Matopos. x 20 

 diam. 



Basic Dykes, Rhodesia. 



