Geology of Mt. Stephen — McConnell. 23 
fossils he describes were obtained was accidentally discovered 
by Mr. Klotz. It is difficult to see on what this claim is based, 
seeing that Mr. Koltz' share consisted in sending his cook to 
make a collection after the beds were found and pointed out to 
him, and after the collections from that and other places, now in 
the museum of the geological survey of Canada were obtained. 
The presence of fossils in Mt. Stephen was first made know in 
1884 by Mr. L. Larabe, of this office, who found them loose in 
the talus at the base of the mountain. Afterwards, in 1886, 
while working in the neighborhood ray attention was drawn by 
Mr. Klotz, I think, to a "curiosity'' which one of the men work- 
ing on the railway had in his possession. This, on examina- 
tion, proved to be a trilobite, and learning on enquiry that it 
came from the slopes of Mt. Stephen, I found without difficulty 
the beds from which it had fallen. 
Mr. Walcott complains in his paper published in American 
Jourttal of Science, September, 1888, of a lack of stratigraphical 
knowledge of the district, and as Dr. Rorainger, after a personal 
examination, admits his inability to supply this, although it is 
possible his researches might have been attenderl with better 
results if he had taken the trouble to make himself acquainted 
with what had already been done, a few remarks on the geology 
of the mountain may not be without interest. 
The stratigraphy of Mt. Stephen, in its general features at 
least, is exceedingly simple, although no detailed measurements 
of individual beds have yet been made. It will hardly be un- 
derstood, however, without a brief reference to the various 
formations found in the district. The series of beds which I 
have called the Bow River group, forms the basal member of 
the section as exposed along the line of the Canadian Pacific 
railway, and consists mainly of a great development of dark- 
colored, greenish and reddish argillites, associated more especi- 
ally in its upper part with some schists, sandstones, quartzites 
and conglomerates. The base is no where visible but the part 
exposed has an estimated thickness of over 10,000 feet. Fol- 
lowing this is the Castle Mountain group, a formation which 
agrees very closely in age and composition with the Pogonip 
limestone of Clarence King's Middle Nevada section. It con- 
sists mostly of massive crystalline dolomites, alternating with 
fine grained, evenly bedded dolomites, ordinary limestones, and 
