CONTENTS 



. 

 CHAPTER I 



PAGE 



THE EVIDENCE FOR EVOLUTION ...... i 



CHAPTER II 



UNICELLULAR AND MULTICELLULAR ANIMALS . . . . 23 



CHAPTER III 

 THE WORMS AND SOME OF THEIR POSTERITY . . . . .58 



CHAPTER IV 

 THE EARLY VERTEBRATES AND THE FISHES . . . . .79 



CHAPTER V 

 THE CONQUEST OF THE LAND ....... 104 



CHAPTER VI 

 THE MAMMALS AND MAN . . . . . . .123 



FOR many of the illustrations the Publishers are indebted to the 

 Deutsche Verlags-Anstalt (from Giinther's Vom Urtier zum Menscheri) 

 and Herr Wilhelm Engelmann (from Haeckel's Anthropogenic). 

 Acknowledgment is also made to Messrs. Watts & Co., London, 

 the Publishers of the English Edition of Haeckel's Anthropogenic > 

 entitled The Evolution of Man. 



vii 



