CONTENTS. 



CHAPTER VIII. CLASSIFICATION OP THE FORMS OF 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 Denned 139 



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 154 



Prediction Confirmed by Partula of Tahiti 155 



Power of Organism to Control its Relations to Environment In- 

 creases with Stage of Evolution Attained 156 



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 OF DIVERGENT EVOLUTION. 



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



Reflexive Segregation 159-174 



Conjunctional Segregation. . . 1 59 



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 



