1922] EDWARDS, GEOLOGICAL WORK AT RAINER NATIONAL PARK 51 



large fish, and also certain other materials for our economic fisheries' 

 exhibit. 



On my .homeward journey I paid short visits to New York, Brook- 

 lyn and Washington, calling especially at the Bureau of Fisheries, where 

 I was again accorded most courteous and helpful treatment by all with 

 whom I came in contact. 



The Bureau in Washington exhibits a series of small aquaria, each 

 aquarium containing a different species of fresh water fish. The unique 

 method of this installation and the concealed lighting make them espe- 

 cially attractive. Notes concerning observations on these and also cer- 

 tain museum group methods were made as by-products of the trip which 

 had already netted a large amount of direct results in molds and speci- 

 mens, thus making the trip doubly profitable to the Museum. 



GEOLOGICAL FIELDWORK IN RAINIER 

 NATIONAL PARK, WASHINGTON 



By Ira Edwards" 



The cooperation of the Chicago, Milwaukee and St. Paul Railway 

 and of the Rainier National Park Company made it possible for the 

 Museum to undertake extensive fieldwork in Rainier National Park 

 during the summer of 1922. This fieldwork had for its purpose, the 

 gathering of the data, photographs, sketches and other material neces- 

 sary for the preparation of a geological group, showing the appear- 

 ance and work of a typical glacier. It may come as a surprise to some 

 to learn that a location suitable for such work could be found within 

 the limits of the United States, as many are accustomed to think of 

 Switzerland, the Canadian Rockies or the Alaskan coast as the only 

 regions where glaciers of large size occur in abundance. However, 

 many of the higher mountains in the western part of the United States 

 have permanent snowcaps or moving glaciers. Most of these, it is true, 

 are very small, but large ice-fields exist on Mt. Shasta, in California; 

 Mt. Hood, in Oregon ; and Mts. Adams, Rainier, and Baker, in Wash- 

 ington. 



Of these, Mt. Rainier is easily the most impressive. The combined 

 area of the glaciers upon its surface covers at least forty-five square 

 miles. This far surpasses the area of ice on any other single peak in 

 the United States and is ten times the area of the glaciers in Glacier 

 National Park. Several of these ice-streams are from four to six 



"Curator of Geology, Milwaukee Public Museum. 



