418 



INDEX 



SMITH, ERWIN F., 41, 113, 198, 



209, 263, 294 

 SMITH, THEOBALD, 117 

 Smith's fermentation tube, 117 

 Soap, linseed oil potash, 305 

 Sodium carbonate, 26, 351, 353, 



367 



chloride, 350-354, 370^ 

 citrate, 319, 37& 

 formate, 156 



hydroxide, effect of, on pig- 

 ment, 175, 176 

 hydroxide for anaerobic culture, 



156, 367 

 hydroxide for cleaning, 3, 4, 



212, 367 

 hydroxide for CO 2 absorption, 



367 



hydroxide N/l, 21, 22, 29, 368 

 hydroxide N/20, 20, 21, 368 

 lactate, 356 

 nitrate, 170, 354 

 nitrite, 353 

 sulfindigotate, 156 

 taurocholate, 360 

 Sohngen's solution, 353 

 Soil, as a medium, 19 

 borer, 241 



catalytic power of, 239-241 

 cellulose-decomposing bacteria 



in, 246-249 

 denitrifying bacteria in, 251- 



253 



diseased spots in, 255 

 extract, preparation of, 351 

 microscopical enumeration of 



bacteria in, 243, 244 

 nitrifying bacteria in, 249-251 

 Solution, albuminoid-free, 353 

 citrated salt, 319 

 Cohn's, 350 

 culture for nitrifying bacteria, 



353, 354 



Solution, Giltay's, 354 



mannit, 253, 254, 354, 355 



Nessler's, 133, 134, 371, 372 



Sohngen's, 353 



Uschinsky's, 350 



Solutions, concentration of, 52-54, 

 195-197 



normal, 20-22, 367, 368 



standard, 367, 368 

 Spatulas, iron and nickel steril- 

 ization, 6 



Specific gravity, alcohol by vol- 

 ume, 377 

 Spectrum, 209 

 Spirillacece, 347 

 Spirillum rubrum, 348 

 Spirocheta obermeieri, 87, 348 

 Spirosoma nasale, 347 

 Spleen, isolation of pathogens 



from, 301 



Sporangiophore, 100, 102, 103 

 Sporangium, 100, 102, 103 

 Spore formation, study of, 144, 



145 



Spores, ix, 5, 74, 100-104, 107, 

 109, 110, 144-145 



bacterial destruction of, by 

 heat, 9, 10, 26, 27 



effect of sunlight on, 209 



mold, germination of, 78, 85 



resistance of, 10, 35, 144, 145, 



197-202 



Spore stain, 90, 91 

 Sputum, staining of, 92, 93 

 Staining, 58, 87-89 



capsules, 97, 98 



flagella, 93-95 



Gram's method, 95, 97 



Gram-Weigert method, 96 



in mvo, 116 



of tissues, 96 



purpose of, 87 



time necessary' for, 88 



