72 



PROF. E. H". L. SCKWARZ OX THE COAST-LEDGES [Feb. I906, 



which it is cut is mostly Table-Mountain Sandstone or granite, 

 and both of these are far more resistant to the action of weathering 

 agencies than the clay-slates of the Devonian Bokkeveld Series. 

 Very deep gorges do traverse the plateau here, but they run straight 



down to the sea from the mountains, and such water as falls 

 upon the plateau sinks in to fertilize the soil, and drains away 

 through the cracks and joints of the rock. 



The character of the vegetation is very different on the plateau east 

 and west of George Town. In the ruggens-country there is very 



