98 
Roosevelt Wild Life Bulletin 
Horace M. Albright, to put a field party at work on important wild 
life problems in the Park. 
The food of the stream fishes is being investigated by Dr. Richard 
A. Muttkowski of the University of Idaho, and Dr. Gilbert M. Smith 
of the University of Wisconsin. These are fundamental studies 
underlying the maintenance of the fish in the Park, a problem never 
having been studied before in this region. With the great increase 
of Park visitors and the excessive demand for trout fishing, the 
problem of maintaining the supply has become a very serious one. 
Mr. Edward R. Warren, the well-known authority on Colorado 
mammals, is making a detailed stud\' of the beaver ponds and dams, 
which have been carefully surveyed and mapped. He has been 
assisted by E. J. Spackman, Jr. Mr. Edmund Heller, the eminent 
field naturalist who accompanied Roosevelt on his African expedi- 
tion, is conducting an investigation of the large mammals of the 
Park, giving special attention to photographic records. He has been 
very materially assisted by a grant from two friends of the Station. 
Governor Robert D. Carey, of ^^'yoming, an enthusiastic admirer 
of Roosevelt, showed his interest in the work of the Station by 
cooperating with Superintendent Horace M. Albright in aiding the 
Director to visit the Teton National Forest, south of the Park, the 
Two Ocean Pass region, and the upper waters of the Yellowstone 
River. The first-hand knowledge gained by this trip, as well as 
that secured in other parts of the Park, will be of special value in 
planning for future investigations in this region. Here occurs the 
Shiras ^loose named in honor of Dr. George Shiras, 3rd, a member 
of our Honorary Advisory Council who has made extensive field 
studies of this animal. 
The preceding statement indicates only the amount of substantial 
gifts and assistance which have been utilized, but does not include 
all that has been available to the Station. This proffered assistance, 
which for one reason or another could not be utilized, has nevertheless 
been much appreciated. Thus Mr. W. C. Gregg of Hackensack. N. J-. 
volunteered to take a Station representative on his exploration trip 
through the southern part of the Park ; and Mr. Hays offered facili- 
ties of which full use was not made. 
The Assistant Director, Alvin G. Whitney, was given, during the 
past summer, a special leave of absence to conduct the " Forest and 
Trail Camp " for young men and boys in the Yellowstone National 
Park. His substitute during this absence was Mr. Aretas A. 
