XVlll 



CONTENTS. 



CHAPTER IX. Mode ob life of Mycetozoa. 



SECTION PAGE 



CXXVI. Conditions of germination 448 



CXXVII. riienomena and conditions of vegetation. Causes of movement of 



Plasmodia. Enclosing of solid bodies 449 



CXXVIII. Process of nutrition 451 



Literature 453 



THIRD PART. BACTERIA OR SCHIZOMYCETES. 



CHAPTER X. Morphology of Bacteria. 



CXXIX. Structure of cells. Cell-aggregates and growth-forms . . . 454 

 CXXX. Course of development. Endosporous and arthrosporous forms. De- 

 velopment of endospores. Special description of some Bacilli . 459 



CXXXI. Development of arthrosporous forms 468 



CXXX 1 1. Controversy respecting species in Bacteria 472 



CXXXI 1 1. Systematic position of Bacteria ........ 474 



CHAPTER XL Mode of life of Bacteria. 



CXXXIV. Capacity and conditions of germination in spores .... 476 

 CXXXV. General conditions and phenomena of vegetation. — Temperature. 

 Nutrient substances. Oxygen. Aerobia, and anaerobia. Effect 

 of substances not serving as nutrients. Oxygen and nutrient sub- 

 stances as inciters of movement 478 



CXXXVI. Special vital adaptations. Saprophytes. Parasites. Parasites on 

 plants. Parasites on animals. Exciting causes of disease. Life- 

 history of Bacillus Anthracisas an example of facultative parasites. 

 Doubtful obligate parasites ; Spirochaete Obermeyeri ; Nosema 

 Bombycis. — General remarks on Bacteria which excite disease . 481 

 Literature 489 



Explanation of Terms •. . 491 



Index 503 



