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 Amceba 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 Eucjlena 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 S4 



xiii 



