xii CONTENTS. 



Indiscriminate Separation, etc., a Cause of Divergence — Continued. 



Pacts Proving This 252 



C< ition of Reflexive Selection Between Isolated Sections Causes 



Divergence as Soon as Heredity Weakens 254 



Utility of Specific Characters. 255-261 



Right handedness, Lefl handedness, and Similar Differences 256 



erence in Use not Necessarily Useful Difference 258 



Divergence Due to Different Methods of Reflexive Selection often 



V .11 advantageous 259 



Different Methods of Using the .Same Environment 259 



Letter by Mr Cockerell, with Suggestions on the Pacts Mentioned. . 260 



Reply to Same 261 



Appendix IV. Ejstof Paperson Evolution, by John T. Gulick. 262 



