CONTENTS. 



Chapter VIII. — Classification op the Forms op the Principles Producing 



Allogamic Evolution. 



Tables of Forms, with Brief Explanations 137-141 



Allogamic, Autogamic, and Agamic Evolution 137 



Forms of the Four Principles of Segregation 138 



Forms of Selection Defined 1 39 



Conditions Determining Forms of Selection 140 



Autonomic and Heteronomic Influences 141-144 



Autonomic Influences Include Endonomic and Reflexive 141 



Autonomic Partition Produces Autonomic Isolation 143 



An Unwarranted Assumption 144-145 



Chapter IX. — Summary and Conclusion. 



Summary 147-153 



Segregation 147 



Unbalanced Propagation 148 



Cumulative Effects through Cooperation of Different Principles. ... 150 

 Through the Operation of Same Principle in Successive Gene- 

 rations 1 50 



Amalgamation 151 



Some of the Facts Emphasized in this Volume 151 



Conclusion 153-158 



What has been Gained by Recognition of Habitudinal Segregation . 153 



Methods of Study that Should be Fully Applied 153 



Study of Organisms under Conditions Favoring Segregation 1 54 



Prediction Confirmed by Partula of Tahiti 155 



Power of Organism to Control its Relations to Environment In- 

 creases with Stage of Evolution Attained 1 56 



Chief Method of Advance is Tentative Variation with Transmission 



to Offspring of Endowments of Survivors 157 



Three Spheres of Progressive Adjustment — Accommodation, Co- 

 operation, and Anticipation "... 158 



Increasing Recognition of Autonomic Factors 158 



Appendix I. — A Small Portion op Divergent Evolution. 



[From the Linnean Society's Journal, Zoology, vol. xx.] 



Reflexive Segregation 159-174 



Conjunctional Segregation i^g 



Social, Sexual, Germinal, and Floral Segregation 160-163 



Impregnational Segregation 163-171 



Negative and Positive Segregation 163 



Dimensional and Structural Segregation 165 



Potential Segregation 166-170 



Institutional Segregation 171 



Concluding Remarks: 



Impregnational Segregation in Earlier and Later Stages 172 



