CONTENTS 



PAGE 



PREFACES 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 15 



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



Germinal Layers 20 



4. Tissues 25 



5. Organs 31 



6. The Reproduction of Animals . - 41 



7. Symmetry 42 



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 65 



Class II. Mycetozoa 68 



1. Example of the Class Didymium difforme 68 



2. General Remarks 69 



Class III. Mastigophora 69 



1. Example of the Class Euglena viridis 69 



2. Classification and General Organisation 71 



Systematic Position of the Example 71 



Class IV. Sporozoa 82 



1. Example of the Class Monocystis agilis 82 



2. Classification and General Organisation ..... .83 



Systematic Position of the Example. 84 



xiii 



