Geology of the Rocky Mountains. — Coleman. 87 
tain more than 10,000 feet high consists of limestone, oolitic 
in part, with a dip of 30° to the southwest. Beneath the 
limestone, in the valley, thick beds of flesh-colored quartzitic 
sandstones and conglomerates crop out. No fossils were ob- 
tained either from the limestones or sandstones. 
Two passes were traversed between the Brazeau and the 
Kooetnay plains on the Saskatchewan, an eastern one follow- 
ing up Job's creek and down Hock creek, and a western one 
along Cataract river. Along the former pass there were 
mountains of limestone with some slate, tilted 45°-50° to the 
southwest. Reddish quartzite crops out in the lower part 
of the Rock creek valley. Some of the tilted mountains to 
the southwest of the pass have folded foothills in front. 
(Orals were collected at the summit of the pass, but by acci- 
dent were lost. 
Southwest of the Cataract pass several mountains are but 
slightly tilted and take on cathedral shapes. The rock ob- 
served is chiefly pink or purplish quartzite, often with trans- 
verse bedding. 
Near the head Of Cataract river is a small sheet of water 
which we named Pinto lake. The rocks surrounding it are 
chiefly limestone; and from Plateau mountain, just west of 
it, numerous fossils were obtained, which have been deter- 
mined by Mr. Walker as follows: 
Atrypa reticularis; several specimens, mostly above the average size. 
Pleurotomaria '.' 
Diphyphyllum arundinaceum Billings. In tie- size of the corallites 
.■Hid the manner of gemmation these specimens agree with I), arundi- 
naceum. They maybe only a larger variety of D. stramineum Bil- 
lings; and. if so. one .if the maio varieties included by Rominger un- 
der Diphyphyllum (Eridophyllum) simcoense Billings. 
Pachyphyllum wood m an i White; one verj perfecl specimen. 
Slab with weathered branches of Trematopora, etc. 
P. woodmani indicates that the nick is Upper Devonian, 
Near the ford of the Saskatchewan on the Kootenay plains 
and not far from the left bank id' the river, a mountain form- 
ing a sharp anticlinal fold was ascended and named Triangle 
peak. Mr. Walker determine- the fossils found then- as: 
Spirifera disjuncta Sowerby; several specimens, with the usual va- 
rial ions in shape. 
Athyris (cf. A. bora Hall). The few specimens are all so exfoliated 
