CONTENTS

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CHAPTER IThe Evidence for Evolution[1]
CHAPTER IIUnicellular and Multicellular Animals[23]
CHAPTER IIIThe Worms and some of their Posterity[58]
CHAPTER IVThe Early Vertebrates and the Fishes[79]
CHAPTER VThe Conquest of the Land[104]
CHAPTER VIThe Mammals and Man[123]

For many of the illustrations the Publishers are indebted to the Deutsche Verlags-Anstalt (from Günther's Vom Urtier zum Menschen) and Herr Wilhelm Engelmann (from Haeckel's Anthropogenie). Acknowledgment is also made to Messrs. Watts & Co., London, the Publishers of the English Edition of Haeckel's Anthropogenie, entitled The Evolution of Man.

EVOLUTION