*o\ 





CONTENTS 



Page 



Preface to the Third Edition v 



Preface to the First Edition vii 



CHAPTER I 

 The Study of Zoology 1 



CHAPTER II 

 The Animal Organism 26 



CHAPTER III 

 Integument 42 



CHAPTER IV 

 Endoskeleton and Voluntary Muscle 54 



CHAPTER V 

 Alimentation 85 



CHAPTER VI 

 Circulation and Respiration 120 



CHAPTER VII 

 Excretion 144 



CHAPTER VIII 

 Means and Methods of Reproduction 153 



CHAPTER IX 

 The Nervous System 165 



CHAPTER X 

 The Endocrine System 205 



CHAPTER XI 

 Cell Division and Gametogenesis 219 



ix 



49471 



