INDEX. 



485 



Bacteria, growth of, conditions in- 

 fluencing, 45 



association with other bac- 

 teria., 47 

 electricity, 47 

 light, 46 

 moisture, 46 

 movement, 47 

 nutriment, 45 

 oxygen, 45 

 reaction, 46 

 temperature, 48 

 .r-rays, 49 

 in gelatin, 148, 149 

 in air, 43, 183 



determination of, 165 

 number of, 167 

 quantitative estimation of, 



165 

 in body-juices and tissues a sign 



of disease, 43 

 influence of anilin dyes on, 30 



of nuclear stains on, 30 

 in ice, 171 

 injections of, into animals, 158, 



159, 1 60 

 in milk, 57 

 in soil, 44, 174 



estimation of the number of, 



*75 

 in tissue, Gram's method of 



staining, 97 

 introduction of, into animals, by 



injection, 158-160 

 in water, 44 



apparatus for counting, 169, 



170 



filtration as a means of di- 

 minishing the number of, 



172 

 quantitative determination of, 



169, 170 

 isolation of, 139 

 liquefaction of gelatin by, 53 

 locomotory powers of, 31 

 measurement of, 104 

 methods of cultivating, 139 



Esmarch tubes, 143 



Petri dishes, 143 



Bacteria, methods of cultivating, 

 plate-cultures, 140 



of observing, 86 

 microscopic examination of, 145 

 morphology of, 36 

 multiplication of, 33 

 non-chromogenic, 52 

 non-pathogenic, 57 

 of specific disease, 182 

 organization of, 40 

 parasitic, 49 

 pathogenic, 57 



in the air, 164 



means of entrance into the 



tissues, 58 



peptonization of mik by, 56 

 photogenic, 50, 56 

 photographing of, 104 

 production of acids and alkalies 

 by, 54 



of aromatics by, 56 



of disease by, 57 



of gases by, 54 



of odors by, 55 



of phosphorescence by, 56 

 rate of development of, 33 

 recognition of, 163 

 reduction of nitrites by, 56 

 results of vital activity in, 50 

 saprogenic, 50 

 size of, 32 



stained or unstained, examina- 

 tion of, 87 

 staining of, in sections of tissue, 



94 



Loffler's method, 95 

 Pfeiffer's method, 96 

 study of, in the stained condition, 



90 



taken in respiration, 60 

 that do not stain by Gram's 



method, 99 



thermal death-point of, 176 

 unstained, method of examining, 



88 



weight of, 33 

 zymogenic, 50 

 Bacteriologic examination of air, 



value of, 167 



