INDEX 



419 



Stains, anilin-water, 72, 95, 96, 



373 



aqueous-alcoholic, 72, 373 

 preparation of, 373, 374 

 saturated alcoholic, 72, 373 

 Stand, microscope, 63, 65 

 Staphylococcus pyogenes albus, 97, 



318, 347 



aureus. 97, 318, 347 

 Starch, decomposition of, 182, 



189, 248 



enzymes of, 179, 182, 189 

 grains, in yeast cake, 116 

 soluble, 179, 189 

 Steam, flowing, 10 

 high pressure, 10, 11 

 sterilization, 10, 12 

 superheated, 10, 11 

 Steapsin, 180 



Stearin, enzyme of, 180, 183 

 Stearinase, 180, 183 

 Stenothermic bacteria, 155 

 Sterigmata, 101 

 Sterilization, 5-15 

 by antiseptics, 15 

 by continuous or discontinuous 

 heating in water at 100 C., 

 8,9 



by dialysis, 13 

 by disinfectants, 14, 15 

 by dry heat, 6, 7 

 by dry heat in ether flame, 6 

 by dry heat in hot air, 6, 7 

 by dry heat in muffle furnace, 6 

 by dry heat in naked flame, 6 

 by filtration, 12, 13 

 by flowing steam at 100 C.; 

 continuous or discontinuous, 

 10, 139 



by moist heat, continuous or 

 discontinuous heating at low 

 temperatures, 8 

 fractional, 34, 139 



Sterilization of. a large bulk of 

 medium, 26 



of agar, 43 



of litmus milk, 26 



of meat infusion, 28 



of nutrient broth, 31 



of nutrient gelatin, 37 



of potato medium, 27 



of water analysis media, 356 



superheated steam, 11 



Tyndall method, 8, 9, 139 

 Sterilizer, Arnold, 9, 10 



hot air, 7, 17 



steam, ix 



STERNBERG, G. M., 177 

 STITT, E. R., 301, 318 

 STOCKING, W. A., 132 

 Stolon, 100 

 Straw, decomposition of, 248 



microorganisms on, 271 

 Streptococci in milk, 275 

 Streptococcus erysipelatus, 347 



pyogenes, 47, 97, 318, 347 

 Slreptothrix, 242 



actinomyces, 97 

 Subcutaneous inoculation, 297, 



309 



Subdural inoculation, 299, 300 

 Substrate, nutrient, 101 

 Sucrase, 180, 182 

 Sugar, caramelization of, 26 



for demonstrating gas pro- 

 duction, 46 



milk, 184 



muscle, 359 

 Sugars as food, 167, 170 



complex as food, 167 



fermentation of, 171, 172, 182, 

 184 



inversion of, 23 



simple, as food, 167 

 Sulfur, lead-blackening, 174 



reduction of, 181, 190, 191 



