CONTENTS. 



PAGE 



Preface . v 



List of Illustrations . ix 



Glossary xiii 



PART I. 

 GENERAL PRINCIPLES OF ZOOLOGY. 



CHAPXEE 



I. The Distinction between Animals and Plants 3 



16 

 29 

 49 

 65 

 81 

 89 

 98 

 107 

 111 



II. The Cell and its Stuuctube . 



III. The Study op 0-rgans 



IV. The Okigin of Species 



V. Embryology and Rbpkoductiox . 



VI. The Symmetry op Animal Fokms 



VII. The Distribution op Animal Life . 



VIII. Life and Fokce 



IX. The Instinct and Intelligence op Aximals 



X. Summauy op Chief Facts .... 



PART II. 



SYSTEMATIC ZOOLOGY. 



I. Classification : the Chief Divisions of the 



Animal Kingdom 117 



II. Protozoa 134 



