CONTENTS 



INTRODUCTION 



PAGE 



Definition of Zoology, and its Place among the Sciences . . . 1 1 

 Historical Sketch i c 



PART I 



STRUCTURAL AND SYSTEMATIC ZOOLOGY 



CHAPTER I 



PRACTICAL ZOOLOGY 21 



- CHAPTER II 



THE CLASSIFICATION OF ANIMALS 47 



Protozoa 54 



Porifera . 65 



Ccelenterata 68 



Platyhelminthes 82 



Nemathelminthes 84 



Trochelminthes 85 



Molluscoida . . . . . . . . -85 



Echinodermata 87 



Annulata . . -95 



Arthropoda 97 



Mollusca 124 



Chordata 137 



CHAPTER III 



SYSTEMATIC ARRANGEMENT OF REPRESENTATIVE FORMS . . 202 



7 



