42 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 59 
When opportunity offered during the fall and winter. field notes 
were written up and studies made of the sections obtained during the 
summer. As the results of these studies two papers were issued 
in the Smithsonian Miscellaneous Collections, Volume 53: No. 6, 
Publication 1934, ** Olenellus and other Genera of the Mesonacide,” 
and No. 7, Publication 1939, ** Pre-Cambrian Rocks of the Bow River 
Valley, Alberta, Canada.” Preliminary studies were also made of 
the unique crustacean fauna found in the Middle Cambrian rocks of 
Burgess Pass. 
Fic. 46—Mountain showing folding of Upper Cambrian rocks on northwest 
side of Amiskwi Pass. Photograph by Walcott. 
In the field season of 1910, the secretary continued the study of the 
Cambrian strata of the section of the Rocky Mountains adjacent to 
the main line of the Canadian Pacific Railway, special attention being 
given to the Stephen formation. The outcrop of this formation was 
carefully examined for many miles along the mountain sides, with the 
hope of finding a locality where conditions had been favorable for 
the preservation of the life of that epoch. The famous trilobite locality 
on the slope of Mount Stephen above Field had long been known and 
many species of fossils collected from it, but even there the conditions 
