DEPARTMENT OF THE INTERIOR 



John Barton Payne, Secretary 



^t*,°^ 



UNITED STATES GEOLOGICAL SURVEY 

 George Otis Smith, Director 



Professional Paper 125 



SHORTER GONTRIRUTIONS TO 

 GENERAL GEOLOGY 



1919 



DAVID WHITE, Chief Geologist 



WASHINGTON 



GOTERNMENT PRINTING OFFICE 

 1920 



