1869.] 



ULEICH '* NTJGGETTT REEF." 



329 



of 20 feet, where it cuts into the western wall (fig. 3). It extends 

 with a slight northerly dip to a depth of 120 feet, terminating 

 there quite abruptly in the reef; whether it does so likewise in the 



Fig. 1 . — Plan, showing the 

 general character of the 



Reef. 



Fig. 2. — Cross Section, show- 

 ing bend in the Reef, 



Fig. 3. — Plan of Reef , show- 

 ing first bar of Granite. 



country, on both sides, has not been ascertained. It is about 7 

 feet thick, and consists at the surface of a fine-grained felspathic 

 (euritic) granite ; it becomes, however, more coarse-grained in depth. 

 There is no displacement or change observable in the reef where 

 this vein crosses it. 



The second granite vein appears at the surface about 10 feet 

 south of the engine-shaft, running right across the reef and dipping 

 southward (irregularly steeper and flatter) at a mean angle of 50°. 

 It is about 6 feet thick and solid where intersecting the reef, but 

 divides on the eastern side into two, and on the western one into 



