xiv ILLUSTRATIONS 



PAGE 



Steller Sea-Lions 121 



The Harp Seal . . 133 



The Ribbon Seal 139 



The Pacific Walrus 143 



i 



Bornean Naked Bat 157 



Fruit-Eating Bats, or Flying "Foxes" 175 



Prairie- 4 ' Dog" Burrow 207 



American Beavers and Their Work 213 



The Families of Native Mice and Rats, Illustrated by Skins of 



Typical Species 223 



Diagram of the Hare and Rabbit Family in North America . . . 263 

 TEXT ILLUSTRATIONS 



PAGE 



Skeletons of Man and Gorilla 12 



Chimpanzees and Orang-Utans Dining in the New York Zoological 



Park 15 



A Dressed-Up Chimpanzee 17 



Japanese Red-Faced Monkey 26 



Diana Monkey 27 



Dead Gelada Baboon 28 



White-Throated Sapajou 31 



Black-Faced Spider Monkey 32 



Common Marmoset 36 



The Ruffed Lemur 38 



Canada Lynx -. 49 



