434 



SUBJECT INDEX 



Growth rate of bacteria, 191 

 B. ramosus, 219 

 Bacterium ^,194 



aerogenes, 268 



coli, 206, 222 



typhosum, 196, 205 

 individual cells, 266 

 Mycohact. tuberculosis, 192 

 Ps. fiuorescens, 224 

 Strept. lactis, 207, 209, 210, 



220, 400 

 yeast, 191, 206, 211, 225, 253 

 variability of, 266 



H 



Heat coagulation of protein, 327 

 liberation by bacteria, 29, 34, 

 180 

 from humus, 30 

 per cell per hour, 31 

 of formation (see Combustion 

 Heat). 

 Hemoglobin, coagulation by heat, 



327 

 Hexose phosphate, 38, 45 

 Hippuric acid fermentation, 61 

 Histidine, fermentation of, 58 

 Humus in soil, heat liberation 



from, 30 

 Hydrogen acceptors and donators, 

 44, 62, 68 

 activation, intensity of, 66 



and reduction potential, 66 

 activators, 64, 68 

 electrode, 85 

 fixation, 173 

 Hydrogenation in fermentation, 49 



(See also Reduction.) 

 Hydrolysis, energy from, 25, 77 



Inanation, (see Starvation). 

 Indicators for reduction potentials, 

 92 



Interface tension causing death, 

 366, 369 



Intermediate fermentation prod- 

 ucts, 44 



Intermediate growth products, 263 



Intramolecular fermentations, 70, 

 75 



Invertase, 23 



lonisation and disinfection, 342 



Lact-acidase, 23, 37, 65 

 Lactase, 23 



Lactic, fermentation and lactose 

 concentration, 118 

 intermediate products, 52 

 retarded by lactic acid, 112 

 Lactozymase, 65 

 Lag period, 193 



and cell concentration, 202 

 oxygen, 202 

 resting stage of cells, 201 

 through poisoning, 196 

 surface tension depres- 

 sion, 196 

 Law of diminishing returns, 250 

 Light causing death, 371 



growth stimulation by, 23 

 Lipase, 23 

 Lipase in yeast, 39 

 Logarithmic growth phase, 193 

 order of death, 274, 282 



(*S^ee also Order of Death.) 

 Longevity of dry bacteria, 303 

 Low temperature, harmful effect 

 upon bacteria, 154, 314, 

 378 

 Luminescent bacteria, 34 



M 



Maltase, 23 



Maximum temperature of fermen- 

 tation, 131 

 growth, 157, 216 



