INDEX. 



679 



Bacillus, typhi abdominalis (see Typhoid 

 Bacillus), 430 



murium, 524 

 typhosus, 431, 436 

 ureae, 140 



der \Vildseuche (Hueppe), 499 

 X (Steinberg) from yellow- fever ca- 

 davers, 538 

 Bacteria, a distinct class of vegetable 



organisms, 11 

 action of acids on, 180 



of alkalies, 183 



of coal-tar products, 197 



of gases, 172 



of the haloid elements, 172 



of salts, 186 



chemical composition of, 124 

 classification of, 10 

 conditions of growth of, 125 

 culture media for, 37 

 dependent on pabulum, 153 

 dimensions of, 20 



influence of pressure on growth of, 

 163 



of physical agents, 153 



of one species on the growth of 



another, 128 



mistaken for infusoria, 3, 10 

 modes of grouping, 20 

 modifications of biological charac- 

 ters, 129 



morphology of, 20 

 motions of, 117 

 the photographing of, 103 

 probably seen by Leeuwenhoeck, 3, 10 

 products of vital activity, 133 



acids, 137. 



butyric acid, 138 



fermentation, 136 



fermentation, alkaline in urine 

 141 



phosphorescence, 145 

 a possible nucleus in, 117 

 reproduction of, 117 

 rapidity of reproduction, 120 

 structure of. 117 

 thermal death-point of, 155 

 varieties of, 117 



vitality of, in moist atmospheres, 

 159 



Bacteria in the air, G13 



number of relatively unimpor- 

 tant, 624 



in articles of food, 667 

 in croupous pneumonia, 396 

 in diphtheria, 449 

 in the dust of city streets, 646 

 in the soil, methods of studying, 642 

 action of, on buried pathogenic 



bacteria, 645 

 number of, in various localities 



and at various depths, 643 

 of graveyards, 643, 646 

 in water, 62* > 



species very numerous, 636 

 distilled, 125 



of cadavers and of putrefying ma- 

 terial from various sources, 664 

 of plant diseases, 571 

 of the skin and exposed mucous 



membranes, 648 

 species found on, 649 

 of the stomach and intestine, 658 

 nitrifying, 144 

 non-pathogenic, thermal death-point 



of, 157 

 parasitic, 127 

 pathogenic, fatal dose of, 242 



modes of action of, 219 

 Bacteriaceae of Zopf, 12 

 Bacterial diseases, immunity afforded by 



an attack, 243 

 Bacte'ridie du charbon, 423 

 Bacteriology, literature of, 8 



early progress of, 6 

 Bacterium aeruginosum, 542 



coli commune (Escherich), 516, 529 

 of Davaine's septicaemia, 499, 500 

 of Ehrenberg, 3, 10 

 termo, 548 



Barium chloride, antiseptic value of, 188 

 Baurngarten, bacilli of, 12 



classification of bacteria, 12 

 on the influence of Koch's tubercu- 

 lin, 364 



Bedding, disinfectants for, 213 

 Beef extracts as culture media, 41 

 Beggiatoa, sulphur in, 24 

 Behring's discovery of the antitoxins. 8 

 antitoxin of diphtheria, 314 



