328 



INDEX 



Tetrite, 86 



Thalli, 18 



Thrombase, 179, 180 



Thymol, 117, 123 



Tiegheim, 214 



Tobacco, fermentation of, 254 



Toluene, 117, 129 



Tourmaline, 68 



Toxins, 11, 123 



'Trade effluents, biological purifica- 

 tion of, 310, 311 



Travis, 287 



Treacle, 95 



Trickling filters, 299-303 



Trimethylene, 51 



Triose, 83 



Tropaeolum majus, 124 



Trypsin, 189, 190, 195; action on 

 albumin of, 190, 191, 192 



Tryptophane, 195 



Tyndall, 134, 135 



Tyndall phenomenon, 8 



Tyrosin, 176, 177, 195 



Tyrosinase, 176, 177 



ULTRAMICROSCOPE, 8, 9 



Ulva latissima, 238, 239, 266, 299 



Urea, 14, 40, 56, 105, 136, 213, 215 



Urease, 136, 216 



Uric acid, 2 



Urushic acid, 175 



Usher, 266 



VALENCY, 41, 46 

 Valentine, Basil, 133 

 Van Delden. 237, 239, 240, 241 

 Van Helmont, 132 

 Van Iterson, 165, 166, 167 

 Van't Hoff, 44, 76 

 'Vegetable fats, 17 

 Vinegar, 19, 157 

 Vital action, 12 

 Von Baeyer, 247, 265, 266 



WAKEFIELD sewage, precipitation 

 of, 292 



Walpole, 156 



Warington, 219, 220, 258, 274 



Water, analyses of, 308-310 ; inter- 

 pretation of, 304-305 



Water-bath, 21 



Wave length, 66 

 motion, 66 



Weigmann, 276 



Wheat, 100, 121, 160, 260 



Whey, 277 



Winogradski, decomposition of pec- 

 tose bodies, 167 ; on nitrification, 

 219-221, 226 ; on sulphur oxida- 

 tion, 237-243 



Willstdtter, 267 



Wine, 148, 157, 175 



Witte's peptone, 23, 154 



Wohler, 40, 96 



Wolverhampton, sewage of, 294 



Wood, J. T., 211 " 



Worms, 174 



Wort, 143 



gelatine, 25, 32, 33 



XANTHIN, 200 



Xanthoproteic reaction, 105, 184 



Xylite, 93 



Xylol, 119 



Xylose, 93 



YEAST, action on grape sugar of, 2 ; 

 characteristics of, 16-19 ; de- 

 tection of maltose in, 128-129 ; 

 extraction of invertase from, 126- 

 127 ; fermentation of grape sugar 

 by, 131-144 ; no action on 

 maltose and milk sugar, 95-96 ; 

 oxidation of acetic acid by, 149 ; 

 use of, in purifying amylase, 

 106 ; variety of functions of, 

 123 ; zymase in cells of, 13 



Yoshida, 175 



Young, 139, 142 



Zsigmondy, 9 



Zymase, 13, 127, 137, 138, 139 



Zymin, 138, 139 



Spottificoode & Co. Ltd., Printers. Colchester, London and Eton. 



