^^ PRELIMINARY REPORT ^ ^^^7'^ 



i,(7,w »xnK S. F.BAIRD.^f 



UNITED STATES GEOLOGICAL SURVEY 



OP 



MONTANA 



PORTIONS OF ADJACENT TERRITORIES; 



FIFTH AHOAL REPORT OF PROGRESS. 



F. V. HAYD EN, 



UNITED STATES GEOLOGIST. 



CONDUCTED UNDER AUTHORITY OF THE SECRETARY OF THE INTERIOR, 





-£^4.SHWgT0N: 



GOVERNM^TTWME^INTING OFFICE. 



1872. 



