XIV. SHARKS--THE TIGERS OF THE SEA 142 XV. THE FEARFUL DEVILFISH AND OTHER RAYS 148 XVI. BONY FISHES--TELEOSTOMI 151 XVII. MODERN FISHES--TELEOSTEI 154 XVIII. AMPHIBIANS--A CONNECTING LINK 167 XIX. AMPHIBIANS--_Continued_ 174 XX. REPTILES--MONARCHS OF THE MESOZOIC WORLD 182 XXI. SERPENTS, GOOD AND BAD 211 XXII. BIRDS--KINGS OF THE AIR 239 XXIII. SOME NOTABLE WATER BIRDS 250 XXIV. VULTURES, FALCONS, AND GAME BIRDS 260 XXV. FROM GULLS TO KINGFISHERS 264 XXVI. PASSERINE BIRDS 268 XXVII. THE BEASTS OF THE FIELD--SOME PRIMITIVE TYPES 270 XXVIII. THE GNAWERS 285 XXIX. MAMMALS OF THE SEA 297 XXX. THE WORLD'S HERDS AND FLOCKS 300 XXXI. THE WORLD'S HERDS AND FLOCKS--_Continued_ 313 XXXII. SOME SUPREMELY USEFUL ANIMALS 324 XXXIII. BEASTS OF PREY--THE CARNIVORA 332 XXXIV. BEASTS OF PREY--_Continued_ 354 XXXV. INSECTIVORA--HEDGEHOGS, MOLES, AND SHREWS 366 XXXVI. THE BATS--WING-HANDED MAMMALS 369 XXXVII. MAN'S HUMBLE COUSINS 373 LIST OF ILLUSTRATIONS GIRAFFES, IN THEIR NATIVE AFRICAN HAUNTS _Frontispiece_ FACING PAGE STARFISH AND OTHER TYPICAL LIFE IN A TIDE POOL 48 CORAL FORMATIONS OF THE GREAT BARRIER REEF, AUSTRALIA 49 CATERPILLAR BEGINNING TO WEAVE ITS COCOON 118 MOTH AND EGGS 119 CATERPILLAR PROTECTED BY FORM AND COLOR RESEMBLING THE TWIGS OF A TREE 148 SEA HORSE PROTECTED BY FORM AND COLOR RESEMBLING THE MARINE PLANTS AMONG WHICH IT LIVES 148 GILA MONSTER, FEARED, THOUGH ITS BITE IS NOT ALWAYS DEADLY TO MAN 149 IGUANA, A REMARKABLE LIZARD OF THE NEW WORLD 149 PELICAN, NOTABLE FOR ITS THROAT POUCH 248 PEACOCK WITH BRILLIANT TAIL SPREAD 249 SACRED PHEASANT 249 OPOSSUM MOTHER AND YOUNG 272 ANTEATER, WHICH LIVES ON INSECTS CAUGHT IN THE STICKY SALIVA OF ITS LONG TONGUE 273