302 



POPULAR SCIENCE MONTHLY. 



stance that little or no gold lias yet been found in place either on 

 or in the mountain be given mncli value in the discussion of the 

 probable origin of the gold, inasmuch as the same negative condi- 



A ilii i'¥ 'Su\i\\x\ IN Alaska — Cascahe near SKAfiUAY. 



tion confronts us in a study of the rocks of all other parts of the 

 same and adjoining regions. Assuming that alluvial gold is in the 

 main a derivative from reef gold, it is certainly strange that streams 

 flowing in well-nigh opposite directions, and yet rising within very 



