TABLE OF CONTENTS 



XI 



E. 



F. 



CHAPTER VIII 



SPECIAL MORPHOLOGY OF THE PROTOZOAN NUCLEUS 



PAGE 



The Nuclear Membrane 249 



The Linin Network 252 



The Nucieolus 253 



The Chromatin 253 



Kinetic Structures 258 



1. Intra-nuclear Division-centres 259 



2. Extra-nuclear Division-centres 265 



3. The Relation of Extra-nuclear to Intra-nuclear Division-centres . . . 268 



4. The So-called " Centrosomes " in Protozoa 272 



General Considerations 273 



CHAPTER IX 

 SOME PROBLEMS IN THE PHYSIOLOGY OF THE PROTOZOA 



A. Intra-cellular Digestion in Protozoa , 280 



B. Respiration 288 



C. Secretion and Excretion 290 



D. Irritability 294 



E. General Considerations 301 



BIBLIOGRAPHY 311 



INDEX OF AUTHORS 329 



INDEX OF SUBJECTS V s . 335 





