CONTENTS, 



CHAPTER Y. On the Natural History of the Variations in 

 the Meaning of Terms. 



PAGE 



1. How circumstances originally accidental become incorpo- 

 rated into the meaning of words .... 236 



2. and sometimes become the whole meaning . . 238 



3. Tendency of words to become generalized . . . 240 



4. and to become specialized .... 243 



CHAPTER VI. The Principles of a Philosophical Language 

 further considered. 



1. Second requisite of philosophical language, a name for 



every important meaning ..... 248 



2. viz. first, an accurate descriptive terminology . . 248 



3. secondly, a name for each of the more important results 



of scientific abstraction ..... 252 



4. thirdly, a nomenclature, or system of the names of 



Kinds . . . . . . .255 



5. Peculiar nature of the connotation of names which belong 



to a nomenclature ..... 257 



6. In what cases language may, and may not, be used me- 



chanically ....... 259 



CHAPTER VII. Of Classification, as subsidiary to 

 Induction. 



1. Classification as here treated of, wherein different from 



the classification implied in naming . . . 266 



2. Theory of natural groups ..... 267 



3. Are natural groups given by type, or by definition? . 271 



4. Kinds are natural groups . . . . .274 



5. How the names of Kinds should be constructed . * 280 



CHAPTER VIII. Of Classification by Series. 



1. Natural groups should be arranged in a natural series . 284 



2. The arrangement should follow the degrees of the main 



phenomenon ...... 285 



3. which implies the assumption of a type-species . 287 



