SUBJECT INDEX 



437 



Reduction potential of methylene 

 blue, 88, 93. 95 

 pneumococci, 86 

 soils, 94 



staphylococci, 87 

 streptococci, 86 

 washed cells, 99 

 yeast, 82 

 within the cell, 92, 99 

 Regeneration of enzymes in the 



cell, 16, 131, 215 

 Rennet, 23 



Respiration (see Oxidation or Oxy- 

 gen Consumption). 

 Retardation of fermentation, 107 

 growth, 199 



Salt balance, 164, 380 

 Salt solution, physiological, 380 

 Seeds, order of death, 275, 287 

 Selection of food, 158 



of resistant strains, 298 

 Sensitive zone of bacteria, 261, 372 

 Shadow forms of Bad. coli, 198 

 Size of bacteria, 397 



of bacteriophage, 397 

 genes, 259 



protein molecules, 260 

 yeast, 397 

 Soap, disinfectant value of, 370 

 Soil, reduction potential of, 94 

 temperature increase in, 30 

 Soul and biochemistry, 1 

 Spores, heat resistance of, 320, 



323, 329 

 Staining of dead cells, 273 

 Starvation, cause of death by, 384 

 death by, 377 

 of bacteria, 14, 20, 377 

 man, 9 

 molds, 18 

 yeast, 11 



Stimulation, chemical, of fermen- 

 tation, 137 

 crop, 254 

 growth rate, 227 

 Succinic acid formation by yeast, 

 43 

 bacteria, 53, 63 

 from amino acids, 43, 63 

 sugar, 53 

 Suffocation of bacteria, 186, 387 



cause of, 392 

 Sugar retarding protein decomposi- 

 tion, 159 

 Sulphur content as measure of 



growth, 162 

 Surface of microorganisms, 397 

 tension depression causing 

 death, 366, 369 

 Survival of the fittest, 298 

 Survivor curves, 281, 285, 292, 297 

 Synthesis and energy potential, 262 

 Synthetic media, 164 



Tammann principle in chemical 

 stimulation, 138, 228 

 enzyme action, 129 

 fermentation, 132, 138 

 growth, 216, 228 

 Temperature, adaptation to, 225 

 and endpoint of fermentation, 

 151, 154 

 growth, 251 

 enzyme action, 124 

 growth rate, 194, 213 

 rate of fermentation, 119, 

 130 

 coeflficient, decrease of, 321 

 definition, 119 

 of death by chemicals, 363 

 dry heat, 310 

 hght, 372 

 moist heat, 320 

 starvation, 18, 379 



