Plugs, cotton, 21, 184 Pneumococcus, 240, 245 Pneumonia, 240, 245, 246, 248 vaccination against, 241 Poisoning, cheese, 104 food, 87, 104, 238 ice cream, 104 meat, 104 Polar germination, 48, 49 granules, 45 Poliomyelitis, 244 POLLENDER, 28, 35 Polysaccharides, fermentation of, 95 Polyvalent vaccine, 285 Pork, measly, 28 Position of bacteria, 37 of flagella, 45, 46 of spore, 49 Positive phase, 287 test, 278 Postulates, Koch’s, 233 Potato, acidity of, 182 glycerinized, 182 media, 180-182 rot, 28, 34 Power, opsonic, 287 Practical sterilization and disinfection, 166-170 _Pragmidiothrix_, 63 Precipitinogen, 269 Precipitinoid, 270 Precipitins, 268-270 anti-, 270 Preparation of antitoxin, 263 of bacterial vaccines, 283, 284 of film, 207 Preservation of slides, 207, 208 Preservative, alcohol as, 160 in vaccine, 284 Pressure, hydrostatic, 79 osmotic, 78, 149 oxygen, 76, 77 steam, 136 sterilization, 136-139 Prevention of disease, 235, 236, 253, 255, 283 Preventive vaccination, colds, 241 pneumonia, 241 rabies, 253 smallpox, 26, 34, 253 vaccines, autogenous, 285 stock, 285 PREVOST, 26 Primary infection, 234 Process kettle, 137 Pro-enzyme, 121 Prophylaxis, 289 Protamine in bacteria, 84 Protease, 124 Protective inoculation, first, 30 Protein in bacteria, 84 coagulation temperature, 51 composition of, 102 decomposition of, 105 differentiation of, 255 foreign, 289 identification of, 293 immunity, 290 putrefaction of, 102-109 split products of, 291 splitting of, 106 structure of, 291 synthesis of, 113 _Proteus vulgaris_, 67, 70, 77 Protoautotrophic, 115 Protoplasm, 41, 59 Prototrophic, 86 Protozoa, cause of disease, 30 cell wall in, 41 in intermediate hosts, 242 relation to bacteria, 40 specificity of localization, 249 Protozoal diseases, transmission of, 242 PSEUDOMONADACEÆ, 65, 70 _Pseudomonas pyocyanea_, 62, 65, 70, 128, 265 Ptomaines, 103, 104 _Puccinia graminis_, 26, 34 Puerperal fever, 28, 34 Punctiform colonies, 223 Puncture cultures, 185 Pure culture, 171, 194-199 Purification of streams, 73 of water, 150 Purin bases in bacteria, 84 Pus cocci, 73 infectious, 26 organisms in, 35 Putrefaction, 27, 31, 33 definition of, 102 of proteins, 102-109 end products of, 103 in soil, 106 Putrescin, 104 Q QUARANTINE, 239 disinfection, 170 Quicklime as a disinfectant, 155, 158 Quinsy, 245 R RABBITS, 227 Rabies, bacteriological examination in, 229 Pasteur treatment of, 253 path of elimination in, 248 transmission of, 239 specificity of localization in, 249 Räbiger’s method of staining, 210 Radiations, 79 Radium, 79 Rancidity of butter, 101