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
.ar-rays, 49
in gelatin, 148, 149
in air, 43, 183

determination of, 165
number of, 167
quantitative estimation of,

I65.
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, I60
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

LofBer'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