ACKNOWLEDGMENTS 
The author owes grateful acknowledgments to 
Dr. W. T. Hornaday, and his courteous assistants, 
whose advice as to the care of birds and animals 
has rendered this volume far more practical than 
it could otherwise have been. She also wishes to 
make acknowledgments for the efficient help of 
Miss Katharine Straith and Miss Myrtle Boice 
in bringing together material for this book; and to 
Mrs. Austin Wadsworth for criticism of chapters on 
dogs and horses. 
The author also wishes to express her thanks to 
Doubleday Page & Co. for their kindness in loaning 
many photographs used in this book, and to Pro- 
fessor Ida Reveley, to Miss Evelyn G. Mitchell, 
to Messrs. Karl and Frank Schmidt for the use 
of their stories, and to Miss Alice Willis and Mr. 
Eugene Barker for the use of photographs. 
VI 
