CONTENTS 



PACK 



PREFACE v 



CONTENTS OF SECTIONS IN VOL. I xiii 



LIST OF ILLUSTRATIONS IN VOL. I. xix 



TABLE OF THE CLASSIFICATION OF THE ANIMAL KINGDOM . . . xxxv 

 INTRODUCTION* ..... 1 



SECTION I 



THE GENERAL STRUCTURE AND PHYSIOLOGY OF ANIMALS .... 10 



1. Amoeba "... . 10 



2. The Animal Cell 14 



3. The Ovum : Maturation, Impregnation, and Segmentation : the 



Germinal Layers 19 



4. Tissues '....'.. .23 



5. Organs ...... 31 



6. The Reproduction of Animals 40 



7. Symmetry 41 



8. The Primary Subdivisions or Phyla of the Animal Kingdom . 43 



SECTION II 



PHYLUM PROTOZOA . ' . . 45 



Class I. Rhizopoda 46 



1. Example of the Class Amoeba proteus 46 



2. Classification and General Organisation 47 



Systematic Position of the Example 48 



Appendix to the Rhizopoda 64 



Class II. Mycetozoa 66 



1. Example of the Class Didymium difforme 66 



2. General Remarks 67 



Class III. Mastigophora .67 



1. Example of the Class Eitglena viridis 67 



2. Classification and General Organisation 69 



Systematic Position of the Example 70 



Class IV. Sporozoa 80 



1. Example of the Class Monoci/stis ayilis . . ... 80 



2. Classification and General Organisation 81 



Systematic Position of the Example . . . . 82 



