viii Contents. 



CHAPTER XVI. 



PAGE 



The Evolution of Mind, ..... 250 



Sect. 1. The Human Mind.— 2. The Evolution of Human 

 Consciousness. — 3. The Will or Reflex Action. — 4. The 

 Mind as a Five-Sense Organ. — 5. Mind and Mechanism. 

 — 6. Electric Action in Mental Phenomena. — 7. Man's 

 Automatic Mental Apparatus. — 8. Summary. 



CHAPTER XVII. 

 The Evolution of Worlds, ..... 274 



CHAPTER XVIII. 



Man's Place in Nature, . . . . .280 



CHAPTER XIX. 

 The Purpose of the Universe, .... 287 



