Mineralogy and Geology. 259 
before presenting them, and cite in this place only some of the par- 
agraphs from his account of the trip to the famous “ Middle Park.” 
Our route to the Middle Park was bank ir the Berthoud Pass, 
from the valley of Clear Creek. The ange of mou bap Bagh! which 
the pass is located is ae sed of shabu rocks—as all the 
Tanges in the mining di istricts. The ascent was very eee on the 
its of Pibbor cast vegetation. As we ascend, the sli: citewry and 
cedars dwindle down in size, until they become recum and 
trail on the ground. Som of the highest peaks are very gen 
and covered with loose rocks as if only the usual atmospheric in- 
fluences had ever affected them. eir sides are often massive 
course their rocky sides are entirely free ae vegetation, hoe 
€ evidences of the outpouring of igneous rocks in this moun- 
tain are very marked; indeed, it may be called an eruptive range. 
le summit "of Berthoud’s Pass, at a height Pas irae 
Tanges ascend like steps to the cotvl axis. e western side of 
this ridge slopes ee y, while the eastern side Poe over ab- 
Tupt This main range also forms a narrow dividing line, or 
“ water-divide,” Her ieen the waters of the neneniee an See 
I stood wher ied waters of each side were only a few feet a te 
and felt a al joy in passing down the western slope o 
mountain be the side of a pure crystal stream whose waters eta 
haste ening on to the great Pacific. 
The Middle Park is eg 8 made up of a number of seniee 
ntary roc ong the 
but a recent ter deposit seem pa _ rye On 
fast sid. there is a long 
by the cof Fraser re tan, formed of the white and yellow 
ide 
Sands and marls which mark ee m the east si 
of the mountain. I have no doubt that it is a formation of the 
