6o 



the view northward over the whirlpool is good. In the 

 foreground one sees the tremendous in-rushing current on 

 the right and the great return current on the left with a 

 series of large whirls along the line of contact. One gen- 

 erally sees a considerable accumulation of flotsam in the 

 whirlpool, made up largely of logs and timbers, and the 

 powerful whirls may often be seen turning them on end 

 and sucking them down beneath the surface. 



At the far side of the whirlpool the high bluff of the 

 drift mass that fills the ancient St. David gorge is revealed 

 where a part of its face is exposed by a recent landslide. 



The basin of the whirlpool is the headward part of 



Looking northwest (down stream) from the Eddy basin across the Whirlpool, showing 



the short, sharp rapids caused by the Upper Reef, which separates the Eddy basin 



from the Whirlpool. 



the buried St. David gorge and is of inter-glacial age. The 

 reef at the outlet was left intact, because the east wall of 

 the older gorge broke through before the boring power of 

 the modern cataract was brought to bear upon the sand- 

 stone ledges. The reef separating the whirlpool from the 



