6o8 



INDEX. 



Bacteria in air, Hesse's apparatus for 

 collecting, 229 

 quantitative methods of estimating, 

 229. See also Air, bacteria 

 in, quantitative methods of 

 estimating. 

 in gelatin, 211, 212 



microtome sections, 212 

 in hydrant-water, 235 

 in milk, 59 



as cause of enterocolitis, 59 

 of '.* summer complaint," 59 

 inoculation of animals with, 221 

 in pump-water, 235 

 in river-water, 235 

 in soil, 238, 239 



estimation of, 238 

 in stomach, 76 



internal structure suggested by stain- 

 ing, 30 

 intestinal, 77 



disposition of, at death, 81 

 introduction of, into lymphatics, 223. 

 in water, 233 



filtration as means of diminishing 



number in, 236 

 quantitative estimation of, 233, 234 

 liquefaction of blood-serum by, 215 



of gelatin by, 54 

 locomotory powers of, 31 

 lophotricha, 31 

 manner of maintaining temperature 



of, for growth, 215 

 means of entrance into circulation, 87 

 measurement of, 162 

 methods of cultivation, 202 

 Esmarch tubes, 206 

 Petri's dishes, 206 

 plate-culture, 203 

 of imbedding, 150 

 celloidin, 150 

 glycerin-gelatin, 151 

 paraffin, 150 

 of observing, 144 

 monotricha, 31 

 morphology of, 36 

 multiplication of, 33 

 not stained by Gram's method, 154 

 occasionally parasitic, 50, 63 

 of acute inflammatory diseases, 246 

 of chronic inflammatory diseases, 292 

 of fermentation, 51 

 of putrefaction, 51 

 of specific diseases, 246 

 of uterus, 77 

 of vulva, 78 

 on plates, Wolfhiigel's apparatus for 



counting colonies of, 233 

 pathogenic, 51, 60 



Bacteria, pathogenesis of, forms of, 83 

 peptonization of milk by, 59 

 peritricha, 31 

 phlogistic, 85 

 phosphorescent, 51, 57 

 photogenic, 51, 57 

 photographing, 162 

 production of acids and alkalies by, 55 



of aromatics by, 57 



of disease by, 60 



of enzymes by, 61 



of gases by, 56 



of odors by, 57 



of phosphorescence by, 57 



of pigment by, 53 

 purely parasitic, 50, 65 



saprophytic, 63 

 recognition of, 227 

 reduction of nitrites by, 57 



determination of, 58 

 relative pathogenic powers of, 63 

 results of vital activity in, 51 

 saprogenic, 51 

 scheme to illustrate relationship of, 



to tissue-lesions, 64 

 septic, 85 

 size of, 23 

 staining of, 148, 149 



Ehrlich's solution for, 152 



in sections of tissue, 149 

 Gram's method, 152 



obviation of precipitate in, 



154 

 LSfner's method, 151 

 Pfeiffer's method, 151 

 stock-solutions for, 148 

 structure of, 30 

 thermophilic, 48 

 toxic, 85 



unit of measurement for, 32 

 unstained, method of examining, 145 

 virulence of, 66 

 zymogenic, 51 

 Bacterial growths on agar-agar, 213 

 on litmus-milk, 214 

 on milk, 214 

 on potato, 213 

 Bactericidal substances, distribution of, 



103 

 Bacteriologic examination of air, 228 

 of soil, 238 

 * of water, 223 

 Bacteriology, history of, 17 

 biologic contributions, 1 7 

 chemical contributions, 22 

 medical contributions, 24 

 surgical contributions, 24 

 objects and aims of, 221 

 Bacterium, 39 



