CONTENTS 



IX 



CHAPTER VIII. 



Phenomena Accompanying Fertilization. 



I. The Environmental Conditions of Fertilization 



(a) Ancestry 



(b) Environment 



II. Internal Conditions at the Period of Fertilization . 



III. The Process of Fertilization 



A. Meiotic Phenomena 



{<a Conjugant Meiosis . 



(6) Gametic Meiosis 



(c) Zygotic Meiosis 



B. Disorganization and Reorganization 



in) Phenomena of Disorganization 



(h) Metagamic Activities and Reorganization 



IV. Parthenogenesis 



^4. Endomixis 



B. Autogamy 



285 

 285 

 286 

 290 

 292 

 294 

 294 

 307 

 309 

 311 

 311 

 312 

 316 

 317 

 322 



CHAPTER IX. 



Effects of Reorganization and the Origin of Variations in the Protozoa. 



I. Effects of Reorganization on Vitality 328 



1. Renewal of Vitality as a Result of Conjugation 334 



2. Intensity of Vitality and Extent of Renewal 335 



3. Relative Vitality of Different Series and Effect of Parents' 



Age on Vitality of Offspring ... 339 



4. Rejuvenescence After Parthenogenesis (Endomixis i 340 

 II. Heredity and Variations in Protozoa 342 



A. Uniparental Inheritance 343 



H. Biparental Inheritance 350 



CHAPTER X. 



General Ecology, Commensalism and Parasitism 



1. Water-dwelling Protozoa .... 



2. Semi-terrestrial Protozoa .... 



3. Soil-dwelling Protozoa 



4. The Sapropelic Flagellates .... 



5. The Coprozoic Protozoa 



Parasitic Protozoa 



Ectoparasitic Protozoa 



Endoparasitic Protozoa 



Effects of Protozoan Parasites on the Host 

 Parasitic Flagellates .... 



Trypanosoma in Mammals . 



Trypanosomes of Birds . 



Trypanosomes of Lizards 



Trypanosomes in Snakes 



Trypanosomes in Crocodiles 



Trypanosomes in Turtles 



Trypanosomes in Frogs, Toads and Salamanders 



Trypanosomes in Fish 

 Parasitic Rhizopods. Dysentery 



Early Taxonomic Observations 



Early Etiological Observations 



Period of Taxonomic Chaos 

 Other Amebae of the Human Intestine 

 Parasitic Ciliata ... 

 The More Important Sporozoan Parasites of Man 

 Hemosporidia ... .... 



352 

 353 

 353 

 356 

 357 

 358 

 359 

 359 

 562 

 364 

 372 

 374 

 377 

 377 

 378 

 378 

 378 

 379 

 385 

 388 

 389 

 392 

 396 

 397 

 402 

 406 



