X TABLE OF CONTENTS 



CHAPTER IV 

 THE MASTIGOPHORA 



PAGE 



A. Protoplasmic Structure 113 



B. The Flagella 119 



C. The Nucleus 124 



D. Food-taking . . 125 



E. Vacuoles . . . . . . . . . . . . . .127 



F. Reproduction ....... ...... 127 



G. Inter-relationships of the Mastigophora ........ 135 



Classification 136 







CHAPTER V 



THE SPOROZOA 



A. Protoplasmic Structure 142 



B. The Nucleus 146 



C. Food-taking 146 



D. Motion 148 



E. Reproduction 149 



F. Inter-relationships of the Sporozoa 166 



Classification 167 



CHAPTER VI 

 THE INFUSORIA 



I. The Ciliata 171 



A. Protoplasmic Structure . . . . . . . . . . . .173 



B. Contractile Vacuoles 186 



C. The Nucleus 188 



D. Encystment .............. 192 



E. Reproduction 192 



II. The Suctoria 195 



III. Inter-relations of the Infusoria ........ 199 



Classification 206 



CHAPTER VII 

 SEXUAL PHENOMENA IN THE PROTOZOA 



A. Phenomena of Conjugation 214 



1. The Permanent or Temporary Union of Similar Adult Individuals (Isogamy) 214 



2. The Union of Similar but Different-sized Individuals (Anisogamy) . .221 



3. The Union of Swarm-spores (Isogamy and Anisogamy) .... 224 



4. The Union of Eggs and Spermatozoa ........ 229 



B. The So-called Maturation-phenomena in Protozoa ...... 233 



C. General Considerations 240 



