INDEX. 



417 



w 



Wad-dressing, antiseptic, 44 



Water, hard, influence on aspect of 



yeast, 194 (footnote) 

 Weights of mucor and alcohol, propor- 

 tion of, 134, and following 

 pages 

 Weight of yeast grown, what due to, 



257 (footnote) 

 Wide dishes, experiments on fermen- 

 tation in, 69, 70 

 favoui-able to mould develop- 

 ments, 75 (footnote) 

 Wine, less liable to deteriorate than 

 beer, 2 

 temperature of sterilization, 34 

 Wort, definition, 2 ; cooling of, 3, 

 4 

 temperature of sterilization, 34 

 solubility of oxygen in, 361, and 

 following pages 

 formula for solubility in any 

 wort, 364 

 Worts, brewers', usual amounts of 

 oxygen in solution, 366, 367 

 experiments on amounts, 379 

 Wort, hopped, its affinity for oxygen, 

 371, and following pages 

 mode of transmitting it free of 



oxygen, 371, 372 

 insoluble substances in, 386 



Yeast, V. also ferment, germs, torulfe 

 nature and properties of, 143, and 



following pages 

 starved and well-nourished, ap- 

 pearances contrasted, 147, 

 148 

 varieties of, 149, and following 



pages 

 commercial origin of, where ? 187 

 relations to other organisms, 180, 

 181 



Yeast, commercial mixtures, 224, 225 

 practical purification of, 230-233 



impurities in masked for a time, 

 220 



exceptional characteristics of, 

 237 



growth of in sterilizing flasks, 29 

 —32 



not transformable into any other 

 organism, 37 



aspect may change under modi- 

 fied circumstances, 37 



non-transformation of mycoderma 

 vini into, 120 

 miicor into, 132 



non-fei-mentative species of, 79, 

 80, 206, 207 



"high," characteristic aspect of, 

 188—192 



well aerated, fungoid mode of 

 growth, 251 



anaerobian gro-ivth, cause of fer- 

 mentation, 259 



growth of, in solutions of sugar, 

 318, and following pages 



growth in relation to proportion 

 of sugar used, 237, and fol- 

 lowing pages 



difficult propagation in saccha- 

 rine mineral media, 329, 330 



growth of, without producing 

 alcohol, 265 



capacity of absorbing oxygen, 

 255 



necessity of oxygen for its growth 

 discussed, 280 



incapable of using oxygen in 

 combination in worts, 380, 

 381 



soluble nitrogenous part of, 320, 

 321, 79 (footnote) 



dried into dust still active, 81, and 

 following pages 



does not perish at temperatures at 

 which disease -ferments do, 

 20 



sudden inactivity of, cause and 

 cure, 347 footnote) 



