III. THE AGE OF CRABS AND CORALS 15 IV. THE REIGN OF THE PINES AND THE REPTILES 24 V. THE PALM AND THE MAX 32 VI. THE STARRY HEAVENS 38 VII. A FRAGMENT OF THE MILKY WAY 46 VIII. PLAN AND PROGRESSION 56 IX. THE KING OF THE DAY 64 X. THE QUEEN OF THE NIGHT 72 XI. VANISHED FAUNA 78 XII. A MOUNTAIN OF FOSSILS 85 XIII. WRITTEN IN ROCKS 93 XIV. FOOTPRINTS IN THE SAND 100 XV. THE WINTER OF THE WORLD 107 XVI. THE FIRST CRUSTACEANS 115 XVII. STONE FISH AND STONE LILIES 122 XVIII. THE BURIED REPTILES 129 XIX. THE BIRDS OF OTHER DAYS 138 XX. THE EARLY MAMMALS 145 XXI. A VERY OLD FAMILY 152 XXII. THE MARVEL IN MAIL 159 XXIII. THE ANCIENT BUILDER 166 XXIV. AN OPOSSUM HUNT 174 XXV. A NEW FASHION OF PAPPOOSE 181 XXVI. LOW DOWN IN THE SCALE 189 XXVII. THE MALLANGONG 195 XXVIII. BESIDE AUSTRALIAN RIVERS 200 XXIX. A WALK AMONG WONDER-TREES 206 XXX. STILL IN THE WONDER-GROVE 213 XXXI. A NOISY FAMILY 221 XXXII. THE FROG’S COUSIN 229 XXXIII. SALAMANDERS 236 XXXIV. A DENIZEN OF THE MARSH LANDS 242 XXXV. A STRANGER FROM MEXICO 247 XXXVI. SOME MERRY LITTLE FRIENDS 252 XXXVII. THE ANCIENT MONSTER 260 XXXVIII. EL LAGARTO 267 XXXIX. WISER THAN ANY BEAST OF THE FIELD 272 XL. OUR COMMON ENEMY 280 XLI. WITH A HOUSE ON HIS BACK 285 XLII. A REAL LIVE MERMAID 291 XLIII. GREAT WHALES ALSO 297 XLIV. THE STORY OF A SEAL-SKIN COAT 303 XLV. A FLYING MAMMAL 313 XLVI. ORDER OUT OF CONFUSION 321 XLVII. A REMARKABLE FAMILY 328 XLVIII. THE GNAWERS 335