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ACKNOWLEDGMENTS 



The author wishes to express his appreciation to the 

 following magazines for granting permission to include ma- 

 terial previously published: American Magazine, Collier's, 

 Delineator, Good Housekeeping, and The Saturday Evening 

 Post. 



All photographs reproduced in this book are by Martin 

 Johnson and are copyrighted by the American Museum of 

 Natural History. 



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