1936] MAMMALS AND LIFE ZONES OF OREGON 3 



through the Blue Mountains, Steens Mountains, Warner Mountains, 

 and from the Klamath region north through the Cascades to Mount 

 Hood. Later the field work was carried on under the direction of 

 H. W. Henshaw, and still later under E. W. Nelson, until fairly 

 representative collections of mammals, birds, reptiles, and plants 

 were obtained from every part of the State. The distribution of the 

 species was thus ascertained with considerable detail and the sig- 

 nificance of geographic variation generally explained. 



Valuable assistance came through the cooperation of the State 

 university at Eugene, the Willamette University at Salem, the State 

 agricultural college at Corvallis, Reed College near Portland, and 

 the fish and game department of the State. The State university 

 was represented in field work by Alfred C. Shelton, under John F. 

 Bovard, and the university collections were made available for work- 

 ing out species and ranges. F. V. Coville and S. F. Blake, Bureau 

 of Plant Industry, rendered valuable assistance in the nomenclature 

 of the plant lists. Morton E. Peck, of the Willamette University, 

 contributed largely in general field work, especially in botany. The 

 agricultural college collection has been drawn upon for such addi- 

 tional material as it afforded, and the fish and game collection through 

 William L. Finley gave every assistance possible, detailing Stanley 

 G. Jewett, R. Bruce Horsfall, and O. J. Murie for field work, and 

 building up a very useful collection of mammals and birds in the 

 Reed College museum. The college museum, under the direction of 

 Harry Beal Torrey, sent one of its student assistants, Mr. Launce- 

 field, into the field on one of the collection trips, and also aided in 

 every way possible with museum material. 



Private collectors have generously contributed to a knowledge of 

 the State fauna. Of these, thanks are especially due to A. Brazier 

 Howell, whose collection is now in the Natural History Museum of 

 southern California ; H. E. Anthony, now of the American Museum 

 of Natural History in New York ; Lee R. Dice, of the University of 

 Michigan ; Alexander Walker, of Tillamook, Oreg. ; Stanley G. Jew- 

 ett, long associated with the Biological Survey's game management 

 and predatory-animal control in Oregon ; and Ira N. Gabrielson, then 

 in charge of the Bureau's rodent control in the State, later its 

 regional supervisor in the region that includes Oregon, and now 

 Chief of the Bureau. 



The Biological Survey field work in Oregon has been carried on 

 at various times and places since 1888 by Theodore S. Palmer, Clark 

 P. Streator, Arthur H. Howell, Albert K. Fisher, Walter K. Fisher, 

 J. Alden Loring, Stanley G. Jewett, Luther Goldman, Morton E. 

 Peck, Alexander Walker, Ned Hollister, Harry H. Sheldon, Robert 

 H. Becker, Edward A. Preble, and the writer. Some of this work 

 has been done sporadically in connection with that in adjoining 

 States, but all has helped. Much information and many important 

 specimens have been obtained from the predatory-animal and rodent- 

 control field workers in the Division of Economic Investigations of 

 the Biological Survey formerly under A. K. Fisher and W. B. Bell 

 and now part of the Division of Game Management under Stanley P. 

 Young. 



Close and cordial cooperation with officials of the Forest Service 

 has afforded important information on game matters and animal 



