346 



INDEX 



Immunity, 240-263 



acquired, 247, 250 



active, 250 



artificial, 250 



natural, 250 



passive, 250 

 Incubation period, 271 

 Incubators, 22 



Indol, formation of, 61 



testing for, 61 

 Industries and bacteria, 135 

 Influenza, 315 

 Intracellular poisons, 34 

 Inversive ferments, 115 

 Involution forms, 12, 66 



Kipp's apparatus for producing hydro- 

 gen, 27, 139 



Klebs-Loffler bacillus, 289 

 Koch's plate method, 40 



postulates, 266 



comma bacillus, 66 



bacillus of tubercle, 276 



Lactic acid fermentation, 115, 130, 



185, 190, 221, 226 

 Lactose, 190 

 Leguminosae, fixation of nitrogen by, 



163 



Leprosy, 308-313 

 Leptothrix, 8, 33 

 Leuconostoc, 17 

 Light, influence upon bacteria, 24-26, 



70 



Liquefaction of gelatine, 44, 241 

 Low yeasts, 125 

 Lymph, glycerinated calf, 252 

 Lyon's, Washington, disinfector, 328 



Maceration industries, 135 

 Malaria, 177, 320 

 Malignant oedema, 19, 172 

 Mallein, 319 

 Mastitis, 184 

 Measles, 321 

 Meat, 234 

 Media, culture, 20 

 Merismopedia, n 

 Method of examination, 43-47 

 Metropolitan water supply, 72 

 Miasmatic diseases, 176 

 Micrococcus, definition of, 8 



agilis, 16 



aquatilis, 53 



casei amari, 226 



Micrococcus Freudenreichii, 192 



gonorrhoea, 299 



tetragonus, 299 



viscosus, 192 



Milk, bacteriology of, 178-213 



absorptivity of, 180 



sources of pollution, 181-184 



number of bacteria in, 185 



influence of temperature upon, 186 



influence of time of standing, 187 



fermentation bacteria in, 189 



constitution of, 189-195 



disease-producing power of, 195 



and tuberculosis, 197-199, 228, 290 



and typhoid, 199 



and cholera, 200 



and diphtheria, 201 



and scarlet fever, 202 



and thrush, 203 



methods of preservation of, 205 



and added antiseptics, 205, 206 



filtration of, 206 



sterilisation of, 207 



pasteurisation of, 208-213 



products, bacteria in, 213-227 

 examination of, 227 



and economic bacteria, 215-220 



sterile, 181 



kinds of bacteria in, 188 



chromogenic, 193 



cooling processes, 207, 209 

 Moist chamber, 41 



Moisture necessary for bacteria, 23 

 Motility, 14 

 Moulds, 116 

 Mycoderma aceti, 127 



Nasal passages, bacteria in, 103 

 Natural purification of water, 69 

 Needles, platinum, 22, 24 

 Nitrates, 147, 154 

 Nitric organism, 157, 158 

 Nitrification, 76, 143-159 



chemistry of, 144-148 



stages in, 145 



bacteria of, 152 



Nitrifying organisms, cultivation of, 



156 



Nitrogen, fixation of, 144, 160-168 

 Nitrous organism, 154, 158 

 Nodules on roots, bacteria in, 163 



Oidium albicans, 203 



Oxygen necessary for bacteria, 26 



Oysters and bacteria, 229-234 



