232 F. V. Hayden on the Geology of the Country 
seen in regular sequence outward inclining at greater or less an- 
les. From the observations of Dr. C. M. Hines, who acted as 
Geologist to the exploring division under Lieut. Maynadier, we 
know that the corresponding formations occur on the opposite 
side of the axis of elevation and as we remarked of the Black 
great heighth in but a partially fluid condition and then to have 
gradually cooled, affecting toa greater or less extent the foss 
iferous strata in contact. 
Near the junction of the Popo Acie with Wind River, W¢ 
eame in full view of the Wind rede osathins sh form the 
dividing crest of the continent, the streams on the one side 
flowing into or Atlantic, and those on the other into the Pe 
is range is also composed toa large extent of red a on 
feldspathic granite with the foasiliGerans rocks inclining 
TS Oe ae eer 
