350 



INDEX. 



Bacteria, growth of, conditions in- 

 fluencing : nutriment, 45 

 oxygen, 45 

 reaction, 46 

 temperature, 47 

 in gelatin, 126 

 in air, 43, 1 50 



determination of, 139 

 number of, 141 

 quantitative estimation of, 



J 39 



in body-juices and tissues a sign 



of disease, 43 

 influence of anilin dyes on, 30 



of nuclear stains on, 30 

 in ice, 145 

 injections of, into animals, 134, 



135 



in soil, 44, 147 

 estimation of the number of, 



148 



in tissue, Gram's method of stain- 

 ing, 82 

 introduction of, into animals, by 



injection, 134, 135 

 in water, 44 



apparatus for counting, 143 

 filtration as a means of dimin- 

 ishing the number of, 146 

 quantitative determination of, 



143 



isolation of, 117 



liquefaction of gelatin by, 51 



locomotory powers of, 31 



measurement of, 88 



methods of cultivating, 117 

 Esmarch tubes, 121 

 Petri dishes, 121 

 plate-cultures, 118 

 of observing, 73 



microscopic examination of, 123 



morphology of, 36 



multiplication of, 33 



non-chromogenic, 50 



non-pathogenic, 53 



of specific diseases, 149 



organization of, 40 



parasitic, 48 



pathogenic, 53 



Bacteria, pathogenic, in the air, 



138 

 means of entrance into the 



tissues, 54 

 photographing of, 89 

 production of acids and alkalies 



by, 52 



of aromatics by, 53 

 of disease by, 53 

 of gases by, 52 

 of odors by, 52 

 of phosphorescence by, 53 

 rate of development of, 33 

 recognition of, 137 

 reduction of nitrites by, 53 

 results of vital activity in, 48 

 size of, 32 



stained or unstained, examina- 

 tion of, 74 

 staining of, in sections of tissue, 



81 

 study of, in the stained condition, 



77 

 that do not stain by Gram's 



method, 84 

 unstained, method of examining, 



75 



weight of, 33 

 Bacteriologic examination of air, 



value of, 141 

 of soil, 147 

 of water, 143 



Bacteriology, history of, 17 

 Bacterium, 38 



definition of, 30 

 Beef-peptone in preparation of 



bouillon, 107 

 Beggiatoa, 39 

 Benches, glass, for use in making 



plate-cultures, 120 

 Binary division, 33 



results of, 33 



Birds, susceptibility of, to experi- 

 mental inoculation with tu- 

 bercle bacilli, 191 

 Black-leg. See Anthrax, symptom- 

 atic. 

 Blood-serum as a culture-medium, 



112 



