INDEX. 



455 



Hay morphology, cultural characters, 

 271 



resisting power of spore to heat, 

 123 

 Heat, effect on growth of bacteria, 247 



sterilization by, 53 

 Hematoxylin, 44 

 Hematozoon of malaria, 432 

 Hemolysis, 194 



Healthy persons as carriers of infec- 

 tion, 175 

 Heterologous serum, igr 

 High temperature incubator, 82 

 Higher bacteria, 276 

 Hill's test for germicides, 243, §2 

 Hiss, medium of, 373 



stain for capsules, 49 

 Historical sketch of bacteriology, 8 

 Hog cholera, 171 

 Holmes, O. W., 12 

 Homologous serum, rgi 

 Honing of knives, 40 

 Hot-air sterilizer, 54 

 Houses, disinfection, 253, 260 

 Hueppe's method for anaerobes, 82 

 Hydrochloric acid (see Acid, hydro- 

 chloric) . 

 Hydrogen, cultivation of anaerobes 

 under, 80 



peroxide, 257 



sulphide, 119 

 Hydrophobia, organism, 170 



diagnosis of, 203, 208 



effect of radium rays on virus of, 

 206 



incubation period in, 207 



preventive inoculation, 206 



"virus fixe," 206 

 Hypersensibility to infection, 11 

 Hypha, 280 



Hypochlorite of calcium, 256 

 Hypodermic inoculation of animals, 



Ice, bacteria of, 148 

 Ice-cream poisoning, 153 

 Illumination for the microscope, 2r 

 Imbedding, in celloidin, in paraffin, 38 

 Immune-body, 226 

 Immunity, acquired, 200 



active, 211 



antitoxic, 208 



bacteriolytic, 193 



by injection of cultures, 201 



duration of, 212 



Immunity, individual, 198 



following vaccination, 200 



scope of, 198 



natural 199 



passive, 211 



racial, 199 



side-chain theory, 218 



theories of, 212 



unit, 348 

 Impression-preparation, 25 



Inactivated serum, 222 

 Incubator, 82 

 Indol, formation of, by bacteria, 129 



test for, 129 

 Infected siugjcal wounds, 262 

 Infection, auto-, 177 



avenues of, 172 



bodily conditions favoring, 178 



by air, r75 



by bed bugs, 177 



by flies, 176, 380 



by healthy individuals, 175 



by insects, 177 



by mosquitoes, 172, 177 



in milk, water, soil, 176 



influence of amount of material 

 on, 182 

 of virulence on, 182 



local conditions favoring, 181 



mixed, 183 



modes of, 172 



of embryo, 172 



of investigators with pathogenic 

 bacteria, 115 



of wounds, 263 



predisposing causes: Age, alti- 

 tude, climate, individual, 179 



racial, 180 



secondary, 183, 287 



terminal, 183 

 Infectious disease, definition, 168 



diseases not followed by immunity, 

 200 

 Inflammation, 283, 288 



diphtheritic (see Pseudo-mem- 

 branous inflammation) 

 Influenza bacillus, 336 

 Infusorial earth in filters, 62 

 Inoculation of animals, for testing 

 pathogenic property of bac- 

 teria, 103 

 for isolation of bacteria, 94 

 intravenous, 103 

 subcutaneous, 102 



of tube-cultures, 79 



