Canine Sagacity 290 Feline Intelligence 295 Bright Little Cebidae 301 Untutored Man 309 Living Souls 316 Consciousness in Plants 323 Mind in Animals 344 Life Progressive 404 Survival of the Fittest 426 Man’s Preëminence 469 Future Life 479 LIST OF ILLUSTRATIONS. 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