on our left hand, 
distant, the naked, almost vertical walls of the lower portion of 
Upon the sides of the western slope in a very slightly inclined 
: position and in some localities covering the very summit, showing 
}_ Clearly that even the dividing crest of the mountains was beneath 
F _ this from the fact that these beds seem to possess apse gas: en 
| Reline as much 5°. They however occur high upon the 
| Bountain slopes saad both sides of the Laramie range, a 
that they partook of the gradual elevation of the country, a 
the crust was broken and the mountain district began to approach 
MS present configuration. On the west side of the Black 
2 * See this Journal, vol, xxi, March, 1861. 
