6CHAPTER V. THE BEGINNING OF LIFE
17CHAPTER XVI. THE FLOWER AND THE INSECT
7CHAPTER VI. THE INFANCY OF THE EARTH
18CHAPTER XVII. THE ORIGIN OF OUR MAMMALS
8CHAPTER VII. THE PASSAGE TO THE LAND
19CHAPTER XVIII. THE EVOLUTION OF MAN
9CHAPTER VIII. THE COAL-FOREST
20CHAPTER XIX. MAN AND THE GREAT ICE-AGE
10CHAPTER IX. THE ANIMALS OF THE COAL-FOREST
21CHAPTER XX. THE DAWN OF CIVILISATION
11CHAPTER X. THE PERMIAN REVOLUTION
22CHAPTER XXI. EVOLUTION IN HISTORY
