Xi CONTENTS. 
Indiscriminate Separation, etc., a Cause of Divergence—Continued. 
Faetis, Proving Pints). 2 seo. unis 2, sure oe eed ee tacte ae eet ene em 252 
Cessation of Reflexive Selection Between Isolated Sections Causes 
Divergence as Soon as Heredity Weakens...... PA Se cas se SMe 254 
UtilityrofSpeetie Characters. oy Feat ee er careeeye eee e A e 255-261 
Right-handedness, Left-handedness, and Similar Differences....... 256 
Difference in Use not Necessarily Useful Difference ............... 258 
Divergence Due to Different Methods of Reflexive Selection Often 
Noneadvanita cease. <a. cccice 1s ava nue tie is eaepeyc betes: tiered eee ater 259 
Different Methods of Using the Same Environment ............... 259 
Letter by Mr. Cockerell, with Suggestions on the Facts Mentioned. . 260 
Reply to Sanne os). whan a aneteae chee ey aetna seer ene erate neti ea 261 
APPENDIX 1V.—ListT OF PAPERS ON EVOLUTION, BY JOHN T. GULICK. 262 
