Contents xv 



PAGE 



§ 6. Tests of Truth in the External World 250 



§ 7. Selection of Ideas by Attention 252 



§8. Attention Variations and the Environment of Thought . . . 256 



§ 9. What constitutes Fitness in the External World ? . . . 258 



§10. The Fitness of Ideas; the Social Environment .... 260 



II. Summary 



264 



§ 12. Some Fragmentary Interpretations 266 



CHAPTER XVIII 

 The Origin of a ' Thing ' and its Nature 



§1. What is a 'Thing' 269 



§ 2. A 'Thing' is Behaviour; the 'What' and the 'How' . . .271 



§ 3. The ' What ' and the ' How ' of Mind 273 



§ 4. The ' Prospective ' and the ' Retrospective ' 275 



§ 5. Probability and Design 277 



§ 6. Design is Genetic 279 



§ 7. The Natural History of the Categories 281 



§ 8. The ' Intuition ' View 285 



§ 9. The Meaning of the Category of Causation 288 



§ 10. Definition of ' Origin ' 291 



§11. What is ' Potentiality ' ? 293 



§12. The Origin of the Universe; Further Problems . . . .298 



CHAPTER XIX 

 The Theory of Genetic Modes 



§ I. Agenetic Science 3oo 



§ 2. The First Postulate of the Theory of Genetic Modes . . .302 



§ 3. Genetic Modes 305 



§ 4. Genetic Science 3o8 



§ 5. The Second Postulate of the Theory of Genetic Modes . .3" 



§ 6. History a Genetic Science 3^3 



§7. The Biological Theory of History Z^S 



§ 8. The Axioms of Genetic Science 322 



§ 9. Vital Phenomena and the Theory of Genetic Modes . . .324 

 § 10. Theories of Life : Mechanical and Vitalistic . . . .327 

 §11. Other Applications 33 1 



