PREFACE 



OR a number of years, the writer 'has felt the 

 need of a work that deals specifically with 

 the Mammals native to the State of Pennsyl- 

 vania. This little Handbook is designed for 

 Boy Scouts, Hunters and Sportsmen, Nature Study 

 students and teachers, and for all lovers of the great 

 outdoors. 



An attempt has been made to include all of the 

 material that the student of mammals needs for a 

 proper appreciation of the animal w^orld. In order to 

 include the discussions of the Biology of Mammals, 

 it has been necessary to reduce all of these to an abso- 

 lute minimum, so that the*volume might be kept within 

 a practicable size. In many cases only the interesting 

 possibilities of the various phases of Mammalian study 

 have been stressed. The inclusion of many known facts 

 in these cases would add too much volume for a work 

 of this kind. Then, too, the student would be robbed 

 of making many interesting discoveries "on his own." 



It is the hope of the waiter that all those for 

 whom this book is intended will find it practical and 

 stimulating. 



The writer is indebted to his colleagues in the 

 Zoology Department for many helpful suggestions and 

 constructive criticisms. Grateful acknowledgment is 

 due Dr. Audrey Avinofif and the other officials of the 

 Carnegie Museum for permission to use photographs 



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