-- of glanders (mallei), 299, 319 -- mesentericus, 86, 151 -- mycoides, 151 -- of malignant œdema, 19, 172 -- No. 41, 219 -- pasteurianum, 130 -- of scarlet fever, 202 -- of symptomatic anthrax, 19, 171, 172 -- of plague, 306-308 Bacillus prodigiosus, 34, 151, 193, 238 -- pyocyaneus, 7, 34, 64, 110, 299 -- pyogenes fœtidus, 34 -- radicicola, 164 -- saponacei, 193 -- subtilis, 31, 86, 108 -- synxanthus, 194 -- of tetanus, 19, 168-171 -- termo, 53 -- of tubercle, 110, 212, 225, 274-291 -- typhosus, 41, 50, 55-62, 212 -- ubiquitous, 53 -- of yellow fever, 316 Bacteria, action of, 26 -- in sewage, 84 -- and wheat supply, 161 -- and fixation of nitrogen, 160-166 -- in cheese-making, 220-227 -- in the dairy, 215-227 -- products of, 240, 241 -- and disease, 264-321 -- the higher, 11, 33 -- in soil, 137-177 Bacterial action, 26 -- treatment of sewage, 90 Bacteroids, 166 Beer diseases, 134 Berkefeld filter, 52 Biogenesis, 3 Biology of bacteria, 1-36 Bitter fermentation, 191 Blood serum, 22 Blue milk, 193 Boracic acid, 205, 331 Bread, bacteria in, 238 Broth, 21 Brownian movement, 14 Bubonic plague, 306-308 Buchner's tube, 141 Butter, bacteria in, 213, 214 -- examination of, 214 -- bacterial flavouring of, 215 Butyric fermentation, 115, 132, 191 Carbol-fuchsin, 44 Carbol-gelatine, 62 Carbolic acid as a germicide, 332 Caries, dental, 104 Chamber, moist, 41 Channels of infection in disease, 269 -- in tubercle, 289 Cheese, bacteria in, 220 Chemical products of bacteria, 241 Chemical substances as disinfectants, 329 -- and bacteriological examination of water compared, 51 -- tests for nitrification, 158 Chemiotaxis, 15, 248 Chicken cholera, 320 Chinosol as a disinfectant, 336 Chloride of lime as a germicide, 331 Cholera, 65-68 -- diagnosis of, 68 -- and filtration, 75 -- and milk, 200 Chromogenic bacteria, 193, 241 Cladothrix, 8, 33 Clark's process, 73 Classification, 7 Coccus, definition of, 8 Colon bacillus, _see_ B. coli communis Comma bacillus, 66 Commensalism, 162 Composition of bacteria, 12-14 Conditions affecting bacteria in water, 70 -- in milk, 186, 187 Contagion, 270 Corrosive sublimate as disinfectant, 331 Counter (Wolfhügel), 49 Cover-glass preparations, 44 Cream, bacteria in, 213 Crenothrix polyspora, 53 Creosol as a germicide, 332 Cultivation beds, 92 Culture media, 20 -- anaërobic, 139 -- hanging drop, 44 -- plate, 40-43 -- pure, 20, 46 -- shake, 62 Decomposition bacteria, 149 Denitrifying bacteria, 143, 149 Dental caries, 104 Deodorants, 323 Desiccation, 26 Diagnosis, 339 Diarrhœa of infants, 175, 316 Diphtheria, 243-245, 289-296 -- bacillus of, 289 -- toxins of, 244, 293 -- and milk supply, 201