108 GEOLOGY OF PART OF THE EAST OF CAPE -COLONY. 



most interesting, especially taking into account the distance between 

 the two localities. 



Prof. Tennant made some remarks on the gratitude due to the 

 first geological observers in South Africa, who had, by the discovery 

 of the Diamond-fields, so materially added to the wealth of the 

 colony. During the last month he had seen no less than .£100,000 

 worth of diamonds brought over by three persons. At present some 

 twenty thousand persons were employed in the fields ; and the dia- 

 monds were equal to any in the world. The trap-rocks in South 

 Africa were as various in their character as those in this country ; 

 and this variety might well lead to speculation as to their origin. 



