IX The Dog Tribe 78 X The Weasel Tribe 91 XI The Bear Tribe 102 XII The Seal Tribe 113 XIII The Whale Tribe 121 XIV The Rodent Animals 136 XV The Wild Oxen 157 XVI Giraffes, Deer, Camels, Zebras, Asses, and Horses 179 XVII The Elephants, Rhinoceroses, Hippopotamuses, and Wild Swine 201 XVIII Edentates, or Toothless Mammals 212 XIX The Marsupials 218 XX Birds of Prey 232 XXI Cuckoos, Nightjars, Humming-Birds, Woodpeckers, and Toucans 243 XXII Crows, Birds of Paradise, and Finches 254 XXIII Wagtails, Shrikes, Thrushes, etc. 263 XXIV Parrots, Pigeons, Pea-Fowl, Pheasants, etc. 273 XXV Ostriches, Herons, Cranes, Ibises, etc. 281 XXVI Swimming Birds 291 XXVII Tortoises, Turtles, and Lizards 299 XXVIII Snakes 311 XXIX Amphibians 321 XXX Fresh-water Fishes 326 XXXI Salt-water Fishes 337 XXXII Insects 354 XXXIII Insects (_continued_) 369 XXXIV Spiders and Scorpions 387 XXXV Crustaceans 397 XXXVI Sea-Urchins, Starfishes, and Sea-Cucumbers 409 XXXVII Mollusks 414 XXXVIII Annelids and Coelenterates 427 Walks with a Naturalist 437 Nature-study at the Seaside 457 Our Wicked Waste of Life 487 INDEX 497 (_Much of the material in this volume is published by permission of E. P. Dutton & Company, New York City, owners of American rights._) ILLUSTRATIONS 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