422 



INDEX 



Wastes, laboratory, destruction 



of, 6, 7 



Watch, stop, 74 

 Water, as an end product, 183 

 bacteria isolated from, 223-227 

 bacteriological analysis of, 223- 



235 



' distilled, 20 

 filtered, 238-239 

 in milk, 23 



of condensation, 35, 38, 39, 52 

 on shipboard, treatment of, 237 

 purification of,. 236-239 

 sterilization of, by heat, 8-12 

 Wax-like substances in bacteria, 



92 

 Weight of bacteria, calculation 



of, 153, 244 

 WELLS, LEVI, 285 

 Welsbach burner, 67 

 WESBROOK, F. F., WHITTAKER, 

 H. A. and MOHLER, B. M. 

 237 



Whey, sour, 169, 349 

 WHITTAKER, H. A., 238 

 Widal test, 361 

 WILEY, H. W., 291 

 Wine-making, yeasts used, 114 

 Wines, 19 

 Winogradski's medium for nitrate 



formation, 173, 350, 351 

 medium for symbiotic nitrogen- 

 fixation, 173, 350, 351 

 WINSLOW, C. E. A., 153, 222, 227 

 WINSLOW, C. E. A. and BROWN, 

 W, W., 222 



Wood ashes, 355 

 Woodhead's flask, 159 

 Woodwork, sterilizing of, 14 

 Wool, effect of sterilization on, 7 

 Working distance, 69, 77 

 Wort, beer, 20, 46, 78 



titration of, 22 



Wounds, sterilization of, 6, 14, 48 

 Wright's stain, 319 

 Wrzosek, 157 



Xylol, effect on enzymes, 187, 188 

 use of, 65, 66, 187, 188, 265, 

 266, 372 



Yeast, 63, 78-80, 84, 97 



cake, flora of, 115, 116 



Fleischmann's Qompressed, 114, 



190 

 Yeasts, budding of, 79 



cultivated, 114 



enzymes of, 182, 190, 191 



fermenting power of, 83, 84 



pseudo, 114 



resistance to heat, 202, 203 



study of, 114-123 



wild, 114 



Ziehl-Nielson's carbol-fuchsin, 374 

 Zone development of colonies, 164 

 Zymase, 180 



lactic acid bacteria, 180, 184 

 Zymogenic, 153 



