| Tropical American Humming-Birds | [Frontispiece] |
| FACING PAGE |
| Types of Apes and Monkeys | [6] |
| Photographic Portraits of Monkeys | [16] |
| Four Great Cats | [48] |
| Some Fierce Cats | [64] |
| A Wolfish Group | [80] |
| Types of Fur-Bearers | [96] |
| Types of Bears | [128] |
| Types of Rodents | [144] |
| Four Types of Cattle | [156] |
| Wild Sheep and Goats | [164] |
| Goats and Goat-Antelopes | [166] |
| Types of Antelopes | [176] |
| The Antlered Deer | [184] |
| Children's Pets at the Zoo | [189] |
| Wild Relatives of the Horse | [196] |
| Pachyderms and Tapir | [206] |
| Types of Marsupials | [220] |
| Typical Birds of Prey | [232] |
| Four Handsome Birds | [246] |
| Finches and Weaver-Birds | [260] |
| American Insect-eating Song-Birds | [264] |
| Gaudy Tropical Birds | [272] |
| American Game-Birds | [278] |
| Four Great Game-Birds | [280] |
| American Wading Birds | [296] |
| Types of Water-Birds | [300] |
| Characteristic Forms and Markings of American Birds Eggs | [312] |
| North American Food and Game Fishes | [328] |
| Insects Injurious To American Maple-Trees | [360] |
| Leaf-eating Insects of Shade-Trees | [376] |
| Life on the Sea-Bottom | [408] |
| North American Seed-eating Song-Birds | [436] |
| Chickadee and White-breasted Nuthatch | [448] |