CONTENTS 



CHAP. PAGE 



I . Introductory 7 



II. The Evidence in Brief 17 



III. The Evolution of Life 24 



IV. The Conditions of Organic Evolution — Here- 



dity and Variation 28 



V. The Factors of Organic Evolution — Natural 



Selection 32 



VI. The Factors of Organic Evolution — Sexual 



Selection 39 



VII. The Factors of Organic Evolution — Trans- 

 mission of Acquirements .... 45 

 VIII. The Factors of Organic Evolution — Are 



there any still Unknown ? ... 48 



IX. The Evolution of Plants 51 



X. A Conclusive Instance 56 



XI. The Past Evolution of Man .... 64 



XII. Some Common Errors Considered ... 96 



XIII. Has Physical Evolution Reached its Goal ? . 108 



XIV. The Future Evolution of Man . . .114 

 XV. Should these Things be Taught to our 



Children ? 120 



Index to Names 125 



