Contents 



XV 



„ , ^ . _, , . PAGE 



§ 6. Tests of Truth m the External World 250 



§ 7. Selection of Ideas by Attention 21:2 



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



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



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



' "• Summary ! ! 264 



Some Fragmentary Interpretations 266 



12. 



CHAPTER XVIII 



The Origin of a * Thing ' and its Nature 



§ I. What is a * Thing ' 269 



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



§ 3. The ' What ' and the ' How ' of Mind ' - ^ii 



§4. The ' Prospective ' and the ' Retrospective ' 27c 



§ 5* Probability and Design 277 



§ 6. Design is Genetic 279 



§7. The Natural History of the Categories 281 



§ 8. The ' Intuition ' View 28q 



§ 9. The Meaning of the Category of Causation 288 



\ 10. Definition of ' Origin ' 291 



\i\. What is ' Potentiality ' ? 293 



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



CHAPTER XIX 



The Theory of Genetic Modes 



§ I. Agenetic Science 300 



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



§ 3. Genetic Modes 305 



§ 4. Genetic Science 308 



§ 5. The Second Postulate of the Theory of Genetic Modes . .311 



§ 6. History a Genetic Science 313 



§7. The Biological Theory of History 311; 



§ 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 



f II. Other Applications 331 



