212 G. F. Becker—Mineral Belts of the Pacific Slope. 
near and north of Owens Lake are at distances from one 
another too great to justify their being regarded as constituting 
a belt if taken by themselves, but when their occurrence is 
considered in reference to the Paleozoic area it seems difficult 
to avoid the conclusion that they really form a continuation of 
attended some of these great orographical changes have con: 
tinued through whole epochs unrepaired, as indeed is know? 
in part from other evidence. 
San Francisco, office of the U. 8. 
urvey, May, 1884. _ . t 
