CONTENTS 



I. Introductory .... 



II. The Darwinian Theory 



III. The Darwinian Theory {continued) 



IV. The Coloration or Animals and its relation to the 



Processes op Selection . 



V. True Mimicry .... 



VI. Protective Adaptations in Plants 



VII. Carnivorous Plants 



VIII. The Instincts op Animals . 



IX. Organic Partnerships or Symbiosis 



X. The Origin op Flowers 



XI. Sexual Selection 



XII. Intra-Selection or Selection among Tissues 



XIII. Eeproduction in Unicellular Organisms . 



XIV. Eeproduction by Germ-cells 

 XV. The Process op Fertilization 



XVI. Fertilization in Plants and Unicellular Organisms 



and its immediate siqnipicance 



XVII. The Germ-plasm Theory 



XVIII. The Germ-plasm Theory (continued) 



XIX. The Germ-plasm Theory (continued) 



FA6E 



1 



25 

 42 



57 

 91 

 119 

 132 

 141 

 161 

 179 

 210 

 240 

 253 

 266 

 286 



312 

 345 

 373 

 392 



