VI PREFACE. 



looking the small lakelets. Students who may carry this report into the field 

 generally desire an explanation which they can put to the test, upon the spot, 

 and so an attempt has been made at interpretation of the various phenomena 

 described. The value of such interpretation will be known only after others 

 have passed judgment upon the same features and more extended observations 

 are available. 



Numerous forest fires in the season of 1904 prevented distant photography, 

 on account of the smoke or haze, but through the courtesy of the Dominion 

 Topographic Survey and of the Detroit Publishing Company we are permitted 

 to reproduce some of their general views, obtained under favorable conditions. 

 In addition to the views so used the writer is indebted to Captain Eduard Deville, 

 Surveyor General of Dominion Lands, and his Chief Topographer, Arthur 0. 

 Wheeler, for a series of maps and photographs and much infomiation concerning 

 the regions under study. To the Director, R. F. Stupart, of the Canadian 

 Meteorological Service, to the Assistant Director, B. C. Webber, and to Mr. 

 N. B. Sanson, very grateful acknowledgment is made for meteorological data 

 relating to British Columbia and Alberta and for the use of instniments kindly 

 placed at the disposal of the expedition. Very sincere thanks are hereby ten- 

 dered also to Prof. Joseph B. Davis, of the University of Michigan, and to Prof. 

 Elmer A. Lyman, of the Michigan State Normal College, for the use of surveying 

 instruments. The writer further desires to express his deep gratitude to the 

 officials and employees of the Canadian Pacific Railway, who permitted the use 

 of their Swiss guides for the necessary higher climbing and in many wa)-s rendered 

 very substantial assistance to the expedition. Finally to the packers and 

 outfitters, Messrs. Robert W. Campbell and George W. Taylor, with their indis- 

 pensable though often unwilling cayeuses, the writer desires to gratefully 

 acknowledge the most generous and courteous treatment. 



W. H. Sherzer. 



The M!chig.\n State Normal College, 

 Ypsilanti, Mich., December, 1906. 



