UNITED STATES GEOLOGICAL SUEVET 



CHARLES D. WALCOTT, DIRECTOR 



CATALOGUE AND LNDEX 



OF OOI^TEIBTJTIOl^S TO 



NORTH AMERICAIf GEOLOGY 



1732-1891 



NELSON HORATIO DARTON 



WASHINGTON 



CfOVEKNMENT PKINTING OFFICE 

 1896 



