CONTENTS 



Preface 



Illustrations 



Outline of the Classification of Animals . 



v 



XIII 



xxiii 



PART I 

 INTRODUCTION 



CHAPTER 



I. The World of Life 



II. The General Principles of Zoological Classification 



3 

 8 



1 ART II 



5 YS TEMA TIC ZOOLOGY 



III. Type Protozoa 



IV. Type Ccelenterata 

 V. Type Echinodermata 



VI. Type Vermes . 



VII. Type Arthropoda . 



VIII. Type Mollusc a 



IX. Type Chorda ta 



19 



5' 



85 



105 



146 



228 

 259 



PART III 



THE GENERAL PRINCIPLES OF ZOOLOGY 



X. Prehistoric Animals 



XI. The Distribution of Animals .... 



4i7 

 444 



