﻿NO. I SMITHSONIAN EXPLORATIONS, I925 9 



well as a mule deer, which, when shot, rushed down the Canyon side 

 and broke its fine horns in landing upon a mass of broken rock. 



This year probably completes the field-work in the Canadian 

 Rockies. A few of the problems encountered have been cleared up 

 in the past nine years, but many remain to be studied by young, well- 

 trained men with strong hearts, vigorous muscles, and the high pur- 

 pose of the research student seeking to discover the truth regarding 

 the development of the North American Continent and of the life 

 of the waters in which the miles in thickness of sands, clay, and limey 

 muds accumulated during a period of several million years of lower 

 Paleozoic time. 



Mrs. Walcott has sketched over 350 species of wild flowers during 

 the past 20 seasons, and she and Dr. Walcott now wish to work in 

 the mountains and valleys of southern Nevada and adjoining areas of 

 California, where climatic and physical conditions and life, both 

 animal and vegetable, are in strong contrast with those of the 

 Canadian Rocky Mountains, but where the problems in which 

 Dr. Walcott is interested in connection with the Cambrian forma- 

 tions of the Cordilleran area are essentially of the same order. 



Acknoivlcdgmcnts . — Commissioner J. B. Harkin and the members 

 of the Canadian National Parks Service gave their hearty coopera- 

 tion. The efifective assistance of the officers and employees of the 

 Canadian Pacific Railway permitted a saving of time and conserva- 

 tion of energy, and grants from the O. C. Marsh and Joseph Henry 

 endowment funds of the National Academy of Sciences were of 

 great assistance. To all, sincere thanks are returned and apprecia- 

 tion is expressed for the cooperation that has been given over a 

 period of years to make Dr. Walcott's work more successful than 

 it would otherwise have been. 



FIELD-WORK IN STRUCTURAL GEOLOGY IN TENNESSEE 



During August and a part of September, 1925, Dr. R. S. Bassler, 

 curator of paleontology, U. S. National Museum, continued his 

 studies in the Central Basin and Highland Rim areas of Tennessee 

 in cooperation, as in previous years, with the Tennessee Geological 

 Survey. For several seasons past, he has been engaged in working 

 out the detailed stratigraphy of these two physiographic provinces, 

 in mapping certain areas of particular scientific and economic inter- 

 est and in collecting the faunas of the various Paleozoic formations 

 outcropping in this part of the state. By 1925, sufficient geologic 

 knowledge had been accumulated to make possible the determina- 



