INDEX 



415 



Pigments, microbial, effect of 

 physical and chemical agen- 

 cies on, 175-177 

 Pipette case, 17, 18 

 Pipettes, cleaning of, 3 



preparation of, for steriliza- 

 tion, 18 



use of, 22, 54, 55, 112 

 Planococcus agilis, 347 

 Planosarcina mobilis, 347 

 Plants, microbial diseases of, 



291-294 

 Plasmolysis, 54 

 Plasmoptysis, 54 

 Plates, agar, 51, 52 

 gelatin, 52 

 inverting of, 52 

 Plating, 45, 49-56 



room, 81 

 Platinum, spongy for absorbing 



oxygen, 157 



needles, sterilization of, 6 

 Pleuritic fluid, isolation of patho- 

 gens from 302 

 Plugs, cotton, 15-17 



rolled, 16 



Poikilothermic bacteria, 155 

 Polypeptids, enzymes of, 180 

 Folysaccharides, enzymes of, 179, 



180, 182, 184 

 Porcelain niters, 12, 13 

 Pores of filter, 12 

 Pork, salt, type of rrJcroflora, 197 

 Potability of water, 227 

 Potassium dichromate, 366 

 hydroxide, 134, 365, 374 

 iodid, 365, 375 

 nitrate as food, 44, 252, 354 

 permanganate solution, use of, 



313 



persulfate, 133, 370 

 phosphate, di-basic, 170, 246, 

 247, 350-356 



Potassium phosphate, mono-basic, 



350, 354 

 Potato, as a medium, 19, 20 



glycerin, 26, 27, 45 



knife, 26 



tubes, preparation for steriliza- 

 tion, 26 



tubes, Roux, 26 

 Precipitin test, 321-323 

 Precipitate, flocculent, in media, 40 

 PRERCOTT, S. C. and WINSLOW, C. 



E. A., 153,227,228,233,360 

 Pressure, for filtration, 13 



osmotic, 53, 54 



steam under, 10, 12 



temperature table, 376 

 Probe, use of, 297 

 Products, metabolic, 217-219 



microbial, study of, 15, 217-219 

 Protamins, 180 

 Protease, 180 

 Protein decomposition products, 



132 



Proteinases, 180 

 Proteins, enzymes of, 180 



soluble, as food, 172, 173 

 Proteolytic enzymes, 24, 180, 185- 



189 



Proteoses, enzymes of, 180 

 Proteus vulgaris, 97, 352 

 Protoplasm, stain for, 87 

 Prototrophic, 154 

 Protozoa, 140, 141 

 Pseudomonas campestris, 97, 208, 

 347 



lucifera, 177 



medicaginis, 97 



pyocyanea, 175 



radidcola, 173, 256-263, 355 



radicicola, isolation from no- 

 dule, 256-263 



radicicola, physiological effi- 

 ciency of, 256-263 



