CHAPTER XXII

NOMENCLATURE, DEFINITION, PREDICABLES

§1. Precise thinking needs precise language 348
§2. Nomenclature and Terminology 349
§3. Definition 352
§4. Rules for testing a Definition 352
§5. Every Definition is relative to a Classification 353
§6. Difficulties of Definition 356
Proposals to substitute the Type (p. 356)
§7. The Limits of Definition 357
§8. The five Predicables 358
Porphyry's Tree (p. 361)
§9. Realism and Nominalism 364
§10. The Predicaments 366


CHAPTER XXIII

DEFINITION OF COMMON TERMS

§1. The rigour of scientific method must be qualified 369
§2. Still, Language comprises the Nomenclature of an imperfect
Classification, to which every Definition is relative; 370
§3. and an imperfect Terminology 374
§4. Maxims and precautions of Definition 375
§5. Words of common language in scientific use 378