12 ANNUAL. REPORT SMITHSONIAN" INSTITUTION, 1910. 



are wonderfully well shown above timber line on the higher ridges 

 and peaks. 



The measurements of the Cambrian section were carried down to a 

 massive conglomerate which forms the base of the Cambrian system 

 in this portion of the Kocky Mountains. This discovery led to the 

 study of the pre-Cambrian rocks of the Bow River Valley. These 

 were found to form a series of sandstones and shales some 4,000 feet 

 in thickness, that appear to have been deposited in fresh-water lakes 

 prior to the incursion of the marine waters in which the great bed of 

 conglomerate and the Cambrian rocks above were deposited. m 



Completing the reconnoissance survey of the Bow River area, camp 

 was moved to the Yoho River Canyon. In the Yoho River Canyon, 

 one of the most picturesque and instructive areas in the great Yoho 

 National Park of Canada, a study was made of the north side of the 

 President Range and numerous pictures taken in that vicinity, also 

 from Burgess Pass, north of Field. 



A most interesting discovery of unique Cambrian fossils was made 

 near Burgess Pass. Quite a number of specimens were collected be- 

 fore snow drove the party back to Field. Three days were spent on 

 Mount Stephen at the famous trilobite beds before breaking up camp 

 on September 8. 



As opportunity offered during the fall and winter, field notes were 

 written up and studies made of the sections obtained during the sum- 

 mer. As the results of these studies two papers are in press in the 

 Smithsonian Miscellaneous Collections, volume 53 : No. G, " Olenellus 

 and other Genera of the Mesonacidse," and No. 7, " 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. 



GEOLOGICAL INVESTIGATIONS IN THE FAR EAST AND IN NEWFOUNDLAND. 



In my last report mention was made of a grant to Prof. Joseph P. 

 Iddings for carrying on geological investigations in the Far East. 

 As one of the results of his work the Institution has received an 

 interesting collection of Manchurian Cambrian fossils, as well as 

 collections of fossils from Japan and Java. 



The Institution made a small grant to Prof. Charles Schuchert, of 

 Yale University, to enable him to carry on certain geological studies 

 and to obtain a collection of Cambrian fossils from the west coast 

 of Newfoundland, the south shore of Labrador, and the Strait of 

 Belle Isle; also collections to illustrate the transition fauna between 

 the Cambrian and Ordovician. 



STUDY OF AMERICAN MAMMALS. 



Through the generosity of a friend of the Institution, Mrs. E. H. 

 Harriman, there has been provided a trust fund yielding an income of 



