CONTENTS 



CHAPTER PAGE 



I. Introduction 1 



II. The History of Evolution 5 



RELATIONSHIPS OF ORGANISMS 



III. The Relationship of Existing Organisms 



1. Classification 19 



IV. The Relationship of Existing Organisms {Con- 



tinued) 



2. Embryology of Vertebrates ... 39 



V. The Relationship of Existing Organisms {Con- 

 tinued) 



3. Comparative Anatomy of Vertebrates . 68 



VI. The Relationship of Existing Organisms {Con- 

 tinued) 



4. Physiology ....... 90 



VII. Evidences of Evolution 



1. Existing Organisms 105 



VIII. Evidences of Evolution {Continued) 



2. The Geological Record . . . .119 



IX. Evolution of the Vertebrates .... 144 



X. Elephants, Horses, and Camels .... 164 



XI. The Evolution of Man ..... 187 



THE PROCESS OF EVOLUTION 



A. The Foundation 

 XII. Adaptation , . 210 



XIII. The Basis of Adaptation ..... 247 



B. Genetics 



XIV. The Foundations of Genetics .... 264 

 XV. Mendelian Heredity 276 



XI 



^oji-/ 



