352 



INDEX. 



Mustard as a deodorizer, 206 

 Mycelium, 232 

 Mycetoma, 300 



Nasal cavity, bacteria of, 141, 259 

 Natural immunity, 170 

 Neisser's gonococcus, 235 



stain for diphtheria bacilli, 277 

 Neutral red in culture-media, 65, 302, 



311. 314 

 Neutralization of culture-media, 59> 



60, 61 

 Nitrate of silver, 199 

 Nitrifying bacteria, 119, 122 

 Nitrogen fixation by bacteria, 123 



liberation by bacteria, 119 

 Nitroso-indol reaction, 119 

 Noma, 229 

 Non-pathogenic bacteria, 220 



definition, no 

 Normal solutions, 61 

 Nose-piece, 18 



Novy's method for anaerobes, 82 

 Nucleins, 199 



Number of bacteria in feces, 144 

 milk, 136 

 soil, 122 

 water, 128 

 of species of bacteria, 220 

 Nutrient agar-agar, 64 

 bouillon, 59 

 gelatin, 62 

 Nutrition of bacteria, 114 



Obeemeier's spirillum, 327, 328 



Objectives, 18 



Ocular, 18 



Odors developed by bacteria, 119 



from water, 126 

 Oese, 22 



Oidium lactis, 230 

 Oil, aniline, 29, 4T 



cedar-wood, 20 



culture-media containing, 264 



-immersion objective, 19, 20 



kerosene, 206 

 Oils, essential, as germicides, 206 

 Opsonin, 181 

 OsteomyeKtis, 243, 309 

 Otomycosis, 232 



Ovum, bacteria conveyed in, 150 

 Oxalic acid, 211 

 Oxygen, relation of bacteria to, 115 



Oysters, typhoid fever conveyed by, 



139 

 Ozena bacillus, 259 

 Ozone in purifying water, 128 



Paracolon bacillus, 313 



Paraffin imbedding, 37 



Paraform or paraformaldehyde, 201 



Parasite, definition, 105 



Paratyphoid bacillus, 313 



Parietti's method for examination of 

 water, 132 



Park, Roswell, method for disinfect- 

 ing hands, 211 



Park, W. H., method for cultivating 

 anaerobes, 82 



Passive immunity, 177 



Pasteur, 13, 16 



Pasteur-Chamberland filter, 57, 128 



Pasteurization, 55, 136 



Pathogenic bacteria, definition, no 



Pear-blight, 6, 147 



Penicillium glaucum, 230 



Peptone, 59, 118 

 Dunham, 67 

 solution, concentrated, 324 



Peptonizing ferments formed by 

 bacteria, 117 



Pericarditis, 239, 244, 246, 253 



Periostitis, 309 



Peritonitis, 239, 243, 245, 261. 263, 



313 

 Perlsuchl, 289 



Permanganate of potassium, 206, 211 

 Peroxide of hydrogen, 205 

 Petri dishes, 86 



Petroleum for destroying insects, .206 

 Pfeiffer's capsule bacillus, 259 



reaction for cholera spirillum 



(Pfeiffer's phenomenon), 192, 



320 

 Phagocytosis, 176, 178, 233, 335 

 Phenol (see also Carbolic acid), 118 

 Phenolphthalein, 60 

 Phosphorescence of bacteria, n7, 224 

 Picric acid, 28 



Piorkowski's culture-medium, 303 

 Piroplasma, 154 

 Placenta, bacteria transmitted 



through, 150 

 Plague, bubonic, bacillus of, 263 

 Plants, diseases of, 6, 147 

 Plasmodium of malaria, 331 

 staining of, 43, 98 



