

ffi. 



PRELIMINARY REPORT 



OF THE 



UNITED STATES GEOLOGICAL SURVEY 



\ 



i * i 



OF 



MONTANA 



AND 



. PORTIONS OF ADJACENT TERRITORIES; 



BEING A 



FIFTH ANNUAL REPORT OF PROGRESS. 



BY 



F. V. HAYD E N, 



U^^i 



^f^LOGIST. 



«0ll8{it.MtllMiil 

 Sii«tNoiiiaritai6teiioii» 



CONDUCTED UNDEfe AUTIU: . 



SECRETARY OF THE INTERIOR. 





Uo/iAiilES 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1872. 



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