CONTENTS 



Preface xi 



CHAPTER I 



The Animal Community 1 



CHAPTER II 

 Animal Habitats 15 



CHAPTER III 



Community Analysis 30 



CHAPTER IV 



The Organization of Land Communities 48 



CHAPTER V 



The Evolution of Animal Communities 65 



CHAPTER VI 



Unbalance in Nature 85 



CHAPTER VII 



Aggregations of Animals 99 



CHAPTER VIII 



Physiological Effects Produced by Aggregations 116 



CHAPTER IX 



Structural Effects Produced by Aggregations 135 



CHAPTER X 

 The Higher Social Levels 145 



41530 



vu 



