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§ 2. The earliest animals 25 Chapter V. Changes in the World’s Climate § 1. Why life must change continually 29 § 2. The sun a steadfast star 34 § 3. Changes from within the earth 35 § 4. Life may control change 36 Chapter VI. The Age of Reptiles § 1. The age of lowland life 38 § 2. Flying dragons 43 § 3. The first birds 43 § 4. An age of hardship and death 44 § 5. The first appearance of fur and feathers 47 Chapter VII. The Age of Mammals § 1. A new age of life 51 § 2. Tradition comes into the world 52 § 3. An age of brain growth 56 § 4. The world grows hard again 57 § 5. Chronology of the Ice Age 59 BOOK II
THE MAKING OF MEN Chapter VIII. The Ancestry of Man § 1. Man descended from a walking ape 62 § 2. First traces of man-like creatures 68 § 3. The Heidelberg sub-man 69 § 4. The Piltdown sub-man 70 § 5. The riddle of the Piltdown remains 72 Chapter IX. The Neanderthal Men, an Extinct Race.
(The Early Palæolithic Age) § 1. The world 50,000 years ago 75 § 2. The daily life of the first men 79 § 3. The last Palæolithic men 84