338 



INDEX 



Opsonins, 263-264; vaccines and 

 agents influencing the, 267. 



Osmotic pressure in bacterial cells, 55- 

 56 ; plasmolysis by, 1 29. 



Oxidative changes, 174. 



Oxygen, varying effects of, on bacteria, 

 131-133, 141-142 ; necessary for 

 production of light by bacteria, 200. 



Parachromatophorous bacteria, 191. 



Parasites, bacteria called, 128; faculta- 

 tive, 228; strict or obligate, 229-230. 



Paratrophic bacteria, 167. 



Pasteur, Louis, 5, 12-13. 



Pasteur-Chamberlain porcelain filter, 

 78. 



Pathogenesis of photogenic bacteria, 

 201. 



Pathogenic bacteria, 228-273; mode 

 of action of, 243-245 ; effects of, on 

 the body, 246-248; immunity to, 

 271-273; entrance of, in to milk, 316- 

 317. 



Pellicles, 38-39. 



Peptones, 221. 



Peritrichous class of flagellate bacteria, 

 31- 



Phagocytic theory of immunity, 272- 

 273- 



Phosphorescence caused by bacteria, 

 198. 



Photogenic bacteria, 198-201. 



Physiological methods of isolation, 86- 

 87. 



Physiology of bacteria, 127 ff. 



Phytotoxins, 255. 



Pigments, bacterial, 191-196. 



Plants, relationship of bacteria to, 119- 

 120; bacterial diseases of, 274-280. 



Plasmolysis, study of structure of cells 

 by, 54-55, 129- 



Plasmoptysis, phenomenon of, ap- 

 plied to bacterial cells, 57. 



Plenciz, Marcus Antonius, 4. 



Pleogony, theory of, 27, 103. 



Pleomorphism, 24-27, 103. 



Poikolothermic bacteria, 137-138. 



Polar granules, 55, 57-5 9. 



Porcelain filters, 78. 



Potatoes as culture medium, 71-72. 



Precipitins, 264-265. 



Pressure, effect of, on bacteria, 163. 



Protein molecule, results of decompo- 

 sition and so-called putrefaction of, 

 221-227. 



Proteins, anaphylaxis to bacterial, 257. 



Proteolytic enzymes of bacteria, 217- 

 220. 



Proteoses, 221. 



Protista, group of microorganisms, 116. 



Protoplasm of bacterial cells, 53-57. 



Prototrophic bacteria, 167, 183-189. 



Protozoa, relationship of bacteria to, 

 125-126. 



Pseudomonas indigofera, size of, 28-29*. 



Pseudozoogloea, 38-39. 



Psychrophilic bacteria, 135136. 



Ptomains, production and grouping of, 

 231, 248, 249-251. 



Pure cultures, 85-86. 



Purification, of water, 301-302; of 

 sewage, 302-303. 



Pus cocci, size of, 29. 



Putrefaction, due to saprogenic and 

 saprophilic bacteria, 216-217; mech- 

 anism of, 220-221 ; results of, of 

 protein molecule, 221-227. 



R 



Rapidity of movement of motile bac- 

 teria, 35. 



Rate of multiplication of bacterial cells, 

 43-46. 



Redi, Francisco, 9. 



Red milk, 313. 



Reduction substances, 173. 



Regenerators, 150. 



Relationship of bacteria, 115 ff. ; to 

 plants, 119-120; to Eumycetes, 

 or fungi, 120-122; to Cyanophyceae, 

 or blue-green algse, 122-123; to the 

 Euphyceae, or true algze, 123; to 

 Myxomycetes, or slime molds, 123- 

 124; to Myxobacteriaceae, 124; 

 to protozoa, 125-126. 



