334 



INDEX 



grouping of (Zooglcea, Pellicles, Col- 

 onies), 37-41 ; reproduction of, by 

 fission, 42-46; by spore formation, 

 46-50 ; rate of multiplication of, 43- 

 46 ; food of, 44-45, 67 ; histology of 

 the bacterial cell, 52-60; minute 

 structure of the bacterial cell, 52-65 ; 

 question of nucleus in cells, 59-60; 

 chemical structure of cells, 60-65 ; 

 study of, by cultivation, 66 ff . ; 

 sterilization and disinfection of, 77- 

 84 ; methods of isolation, 86-92 ; 

 microscopical examination of, 94- 

 101 ; classification of, 102-114; 

 taxonomy of, 102-126; relationship 

 of, 115-126; definition of, 116117; 

 points of resemblance to other forms 

 of life, 117-120; physiology of, 127 

 ff . ; relations between their environ- 

 ment and, 127-164; water neces- 

 sary to growth of, 129-131; oxy- 

 gen and, 131-133 ; influence of 

 temperature on, 134-140; classifi- 

 cation according to effect of heat on, 

 i35 -I 36; action of chemicals on, 

 140-154; relation of light to, 155- 

 159; effect of electricity on, 159- 

 162 ; lack of effect of Rontgen rays 

 on, 162-163 ; effect of movement on, 

 163 ; effect of pressure on, 163 ; 

 effect of association on, 164; metab- 

 olism of, 165-170; nitrifying, 183- 

 185; prototrophic, 183-189; ni- 

 trogen-fixing or legume, 185-186, 

 285-287; sulphur bacteria, 186-188; 

 iron bacteria, 188-189; chromogenic, 

 190-197; photogenic, 198-201; zy- 

 mogenic, 202215; saprogenic and 

 saprophilic, 216-227; pathogenic, 

 228-273; specific and nonspecific 

 infeclious diseases due to, 235 ff. ; 

 mode of action of pathogenic, 243- 

 245 ; distribution of, 282-332 ; of 

 the soil, 282-287 ; species of, 283- 

 285 ; of the air, 289-292 ; of water 

 and sewage, 293-304; of milk and 

 its products, 305-318; of human 

 body, 310-332. 



Bacteriaceee Migula, 107-108. 



Bacterial cells, dimensions of, 27-29. 



Bacterial diseases of plants, 274-280. 



Bacterial sheaths, 37. 



Bacteriology, definition and history, 



1-7. 



Bacteriopurpurin, 187-188. 

 Bacterium anthracis, 18-19. 

 Bacteroids from legume bacteria, 185- 



186. 



Beggiotoaceae group, 23. 

 Berkefeld system of filters, 78. 

 Binary division, reproduction by, 42- 



43- 



Blood serum as a culture medium, 72. 

 Blue milk, epidemics of, 313. 

 Bouillon as food for bacteria, 67, 68-71. 

 Bread-making, zymogenic bacterial 



enzymes of use in, 215. 

 Brownian movement of bacteria, 35. 

 Butyric acid fermentation, 209-210; 



in sour milk, 213-214. 



Capsules surrounding bacteria, 35-37. 



Caramelization of sugar media, 83. 



Carmine for staining, 95. 



Catabolism, 166, 167-168. 



Catalase, example of intra-cellular 

 enzyme, 178. 



Cells, minute structure of bacterial, 

 52-65. 



Cellulose in cell walls, 63-64. 



Cheese, zymogenic bacteria in, 213. 



Chemical changes, produced by en- 

 zymes, 177-178; resulting from de- 

 composition and so-called putrefac- 

 tion of the protein molecule, 221-227. 

 See Metabolism. 



Chemical composition of food, 129. 



Chemicals, used for disinfection, 84 ; 

 action of, on bacteria, 140-154; dis- 

 infecting qualities of, i46ff. 



Chemical structure of bacterial cell, 

 60-65. 



Chemical substances, poisonous sub- 

 stances produced by bacteria, 248 ff . 



Chemical theory of immunity, 273. 



Chemotaxis, 141-143, 144 ff. 



Chemotropism, 141-143, 144 ff. 



Chlamydobacteriacese, 22. 



