70 Transactions of the South African Philosophical Society. 



Nek is on Cave sandstone flanked on either side by piles of 

 lavas. 



In time to come great tracts will thus be separated from the great 

 mountain area of Basutoland, and will then be denuded so as to 

 resemble the country between Molteno and Jamestown. 



The consideration of the submergence of the old land surface 

 beneath the waters of the Indian Ocean while the Drakensberg area 

 was being elevated, is one which cannot be discussed in this paper. 

 It involves the history of the earth-movements which affected the 

 southern portion of the Cape Colony, and postulates a knowledge 

 of the conditions under which the Uitenhage series of the Colony 

 and the Cretaceous rocks of Pondoland and Zululand were formed. 



