xiv Contents 



CHAPTER XIV 



COINCIDENT AND CORRELATED VARIATIONS 



PAGE 



I. Correlated Variations . . . . . . , . .196 



2. Coincident Variation Theory not Sufficient ..... 201 



3. Illustrations of Orthoplasy with Correlated Variation . . . 202 

 4. Natural Selection still Necessary , 209 



PART III 



CRITICISM AND INTERPRETATION 



CHAPTER XV 



STRUGGLE FOR EXISTENCE AND RIVALRY 



I. Biological Struggle for Existence ....... 213 



2. Sorts of Rivalry .......... 218 



3. Conscious Rivalry 219 



4. Economic Rivalry or Competition . 221 



CHAPTER XVI 



LAMARCKIAN HEREDITY AND TELEOLOGY 



i. The Evidence in Favour of Use-inheritance ..... 226 



2. General Effects and Specific Heredity 228 



3. The Origin of Heredity 229 



4. Lamarckism and Teleology . . . . . . . .231 



5. Natural Selection not Unteleological ..,,.. 232 



6. Cosmic Purpose and Law ........ 234 



7. The Place of Individual Purpose in Evolution .... 235 



CHAPTER XVII 

 SELECTIVE THINKING 



I. The Material of Selective Thinking 239 



2. The Origin of Thought-variations ....... 241 



3. Systematic Determination of Thought ...... 243 



4. The ' Platform ' of Determination 245 



5. The Function or Process of Mental Selection; the External World 247 



