of various animal groups, and for placing their collec- 

 tions at the writer's disposal for photographing and 

 studying. Mr. R. L. Fricke, of the Carnegie xMuseum, 

 supplied the photographs of Bonaparte's Weasel and 

 the Big Brown Bat. The drawings of animal tracks 

 were made by Miss Ruth Isensee, under the direction 

 of the author. 



The author wishes to thank Dr. H. T. H. Jackson 

 and his colleagues, in the Bureau of the United States 

 Biological Survey, for the photographs of the Com- 

 mon and the Star Nosed Moles. 



Mr. Remi H. Santens, Chief Taxidermist in the 

 Carnegie Museum and Instructor of Taxidermy in the 

 Zoology Department, has made possible the excellent 

 phototgraphs, which were taken by Mr. W. S. Coff- 

 man, under the direction of the author. Mr. Geo. W. 

 Gordon, with whom the writer has, for many years, 

 observed the wild creatures in their native haunts, has 

 been quite helpful in many ways. 



While all of these associates have been of great 

 assistance, the author assumes the entire responsibility 

 for any errors that have doubtless crept into this work. 



<v>i 12 ><*■ 



