| | PAGE |
|---|
| 1 | Portrait of Author | Frontispiece |
| [2] | Venus’s Fly-trap | 20 |
| [3] | Round-Leaved Sundew | 25 |
| [4] | Protomyxa Feeding | 34 |
| [5] | Fresh-Water Hydra | 37 |
| [6] | Star-fish Opening an Oyster | 45 |
| [7] | Common Earth-worms | 60 |
| [8] | Fiddler-Crabs | 72 |
| [9] | Warty Hermit-Crabs | 75 |
| [10] | Agalena and Her Funnel-Web | 79 |
| [11] | Lepismas at Work | 88 |
| [12] | You-ee-up in His Den | 91 |
| [13] | Seventeen-year Cicada | 97 |
| [14] | New-born Cicada | 99 |
| [15] | Dome-like House of Cicada | 101 |
| [16] | Blossom of Cucurbita | 105 |
| [17] | Nest of Lasius | 109 |
| [18] | Brachinus Pursued by an Enemy | 112 |
| [19] | Common Tiger Beetle | 117 |
| [20] | American Luna Moth | 123 |
| [21] | House-builder Moth | 129 |
| [22] | Pseudargiolus Butterfly | 134 |
| [23] | Violacea Butterfly | 138 |
| [24] | Neglecta Butterfly | 142 |
| [25] | Mourning-Cloak Butterfly | 146 |
| [26] | Leaf-Cutter Bee at Work | 150 |
| [27] | Battle Between Ants | 154 |
| [28] | Nest of Common Sun-fish | 159 |
| [29] | Black-nosed Dace | 163 |
| [30] | Common American Eel | 172 |
| [31] | Rana Clamata, or Green Frog | 177 |
| [32] | Common American Toad | 181 |
| [33] | Northern Rattlesnake | 189 |
| [34] | Mother Black Snake | 192 |
| [35] | Summer Green Snake | 195 |
| [36] | Water Snake | 196 |
| [37] | Common Box Tortoise | 201 |
| [38] | Summer Ducks and Young | 206 |
| [39] | American Woodcock | 214 |
| [40] | Female Piping Plover | 220 |
| [41] | Home of Bob White | 225 |
| [42] | Ruffed Grouse in Spring-time | 235 |
| [43] | Mexican Wild Turkey | 241 |
| [44] | Nest of American Osprey | 247 |
| [45] | Female Turkey Buzzard Dining | 259 |
| [46] | Nest of the Robin | 264 |
| [47] | Red-winged Blackbird’s Nest | 266 |
| [48] | Double Nest of Orchard Oriole | 268 |
| [49] | Female Baltimore Oriole | 270 |
| [50] | Acadian Flycatchers | 272 |
| [51] | Long-billed Marsh Wrens | 274 |
| [52] | Golden-Crowned Kinglets | 275 |
| [53] | Lace Hammock of Parula Warbler | 276 |
| [54] | Three-story Nest of Yellow Warbler | 278 |
| [55] | Saw-whet Owl and Chickaree Squirrel | 282 |
| [56] | Hackee, or Chipping Squirrel | 287 |
| [57] | My Dog Frisky | 292 |
| [58] | Tom on Duty | 297 |
| [59] | Jack at Dinner | 305 |
| [60] | Australian at Home | 311 |
| [61] | Representative Life of Western Asia | 319 |
| [62] | Seedling of Winter Grape | 325 |
| [63] | Tip of Radicle of Seedling Maple | 331 |
| [64] | Wonderful Equine Intelligence | 347 |
| [65] | Papier-Maché Palace of the Hornet | 353 |
| [66] | Unsolicited and Unlooked-for Kindness | 357 |
| [67] | Exhibition of Grandeur | 378 |
| [68] | Four Orphaned Robins | 389 |
| [69] | Mated for Life | 396 |
| [70] | Evidence of Conjugal Affection | 400 |
| [71] | Life in the Primordial Sea | 410 |
| [72] | Carboniferous Times | 412 |
| [73] | Mesozoic Flora and Fauna | 415 |
| [74] | Palæolithic Men Attacking Cave Bear | 448 |
| [75] | Era of Mind and Heart | 462 |