PLATE III. 





' ' J^'k-x 



V 



V 



\- 





J 



i 





\Ml 



V 



j^- 



'\j 



tK; 











SAS. 



- 



k 



C -ysta] 

 IFig. I.KAN 



Fig. 2. NEVADA. 



U. S. Geol. Surv. 



Scale, 2+ miles per inch. 



U. S. Geol. Surv. 



Scale, 4-H miles per inch. 



