ILLUSTRATIONS 



Grant Zebra and Young .... Frontispiece 



Largest Alligator in the Reptile House ... 38 



European Red Deer 48 



Bactrian Camel 52 



Mute Swans on the Beaver Pond 60 



Pygmy Hippopotamus 64 



Pigeons in Flight Over Their Aviary .... 76 



Columbian Black-Tailed Deer 80 



On the Wild-Fowl Pond 90 



Tree Toad on the Trunk of an Oak .... 102 



Roosevelt Day in the Park 110 



A Workshop in the Jungle 114 



Research Station, Kartabo 116 



The Mazaruni River 118 



Beginning A Long Journey 124 



Siphoning Whitefish Fry Into the Shipping Cans . 128 



Suggestion for Improvement of Aquarium Building . 132 



Proposed Aquarium Pumping Plant .... 133 



Giant Garfish from Louisiana 133 



filter Bed 137 



Five Types of Strainers Used in Aquarium . . . 137 



Lead Filter Pipe With Saw Cuts 138 



Hand Air Compressor 139 



Steam Air Compressor 140 



