744 EDWARD H. NUTTER, WILLIAM B. BARBER 



glaucophane schists older than the Golden Gate or Franciscan, 



and the possibility suggests itself that these may be but isolated 



outcrops of extensive masses which underlie the Coast Ranges. 



The only hypothesis that seems to satisfactorily explain the 



occurrences of these rocks is that they are the result of dynamic 



agencies, and may or may not be the products of widespread 



regional metamorphism. 



Edward Hoit Nutter, 



William Burton Barber. 

 Stanford University, California, 

 May, 1902. 



