396 



INDEX 



Agar, dextrose, 114, 175 



dextrose calcium carbonate, 



167, 349 



digestion of, 39, 40 

 Endo, 361, 363 

 fermented, 41, 349 

 filterability of, 39, 40 

 litmus lactose, 349, 357, 358 

 mannit, 253, 254 

 melting point of, 39 

 nitrate, 251, 354 

 nitrogen-free ash, 256, 355 

 nutrient, 19, 20, 41-43 

 nutrient, preparation of, 41-43 

 percentage used in media, 40 

 soil extract, 263, 351 

 solidification of, 39, 40 

 solubility of, 39, 40 

 source of, 37 

 sterilization of, 40 

 urea, 352 

 washing of, 41 

 waste, IX 

 plate culture, preparation of, 



129 

 shake, litmus lactose, 223, 228, 



236, 357 

 slant, 26, 43 

 Agents, chemical, of sterilization, 



5, 14 



physical, of sterilization, 5 

 sterilizing, 5 

 Agglutination, macroscopic test, 



310-312 



microscopic test, 312 

 observation of, 74 

 Air, bacterial analysis of, 220- 



222 



displacement of, 157, 164, 165 

 exclusion of, 156, 157 

 exhaustion of, 156 

 microorganisms in, 146, 147, 



220-222, 272, 273 



Air, relation to pigment formation, 



175 

 Albumin, egg, use of, 29 



in milk, 23 

 Albumins, coagulation by heat, 28 



soluble, as food, 172 

 Albuminoids, 32 



effect of, on sterilization, 8 

 Alcohol, by volume, table of, 377 



ethyl, 181-183, 215-217, 364, 

 369 



ethyl, enzyme of, 181, 183 



ethyl, fermentation of, 183 



for cleaning microscope, 65 



for decolorization, 265, 266 



for drying, 3, 4, 16 



for extraction of fat, 92 



for producing vacuum, 156 



sterilization in, 6, 14, 257 

 Alcoholase, 181, 183 

 Alcoholic fermentation, 114, 122, 



171 



Alcoholoxidase, 181 

 Aldehydases, 181, 183 

 Aldehydes, 182 

 Alkali, action of on methylen blue, 



87 

 Alkali, free, 1 



normal, 20-22, 368 



production, 23 

 Alkali-proteinase, 180 

 Amidases, 181 

 Amides, acid, 181 

 Amino acids, enzymes of, 180 

 Ammonia, 37, 44, 131, 134 



formation in soils, 245, 246, 252 

 Ammonium carbonate, 181, 185 



hydroxide, 134, 245, 246 



malate, 353 



nitrate, 246 



sulfate, 170, 308, 350, 352, 353 



tartrate, 350 

 Amoebobacter, 348 



