- 1Preface
- 2Contents
- 3Chapter I — The Threshold of Backboned Life
- 4Chapter II — How the Quaint Old Fishes of Ancient Times Have Lived…
- 5Chapter III — The Bony Fish, and How They Have Spread Over Sea and…
- 6Chapter IV — How the Backboned Animals Pass From Water-Breathing to…
- 7Chapter V — The Cold-Blooded Air-Breathers of the Globe in Times Bo…
- 8Chapter VI — the Feathered Conquerors of the Air. Part I — Their…
- 9Chapter VII
- 10Chapter VIII — The Mammalia or Milk-Givers — The Simplest Suckling…
- 11Chapter IX — From the Lower and Smaller Milk-Givers Which Find Safe…
- 12Chapter X — The Large Milk-Givers Which Have Conquered the World by…
- 13Chapter XI — How the Backboned Animals Have Returned to the Water,…
- 14Chapter XII — A Bird’s-Eye View of the Rise and Progress of Backbon…
The Winners in Life’s Race
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