6 3 8 



INDEX 



Vegetable protease, 13 



sucrase, 14, 195, 199 

 Vegetable globulins, 93, 95, 108 

 Vegetable gums, 20 

 Veith lactometer, determination of specific 



gravity of milk by, 324 

 Viscosity test, 59 

 Vitamines, 313 

 Vitellin, 94, 95 



Volatile fatty acids, 212, 215, 370, 397 

 Volhard-Arnold method for determination of 



chlorides, 556 

 Volhard-Harvey method for determination of 



chlorides, 557 

 Volume of the urine, 359 



Water at meals, influence of, 138, 185, 402, 574 

 softened, 57 



Water test meal, 161 



Water, influence of on metabolism, 574 



Wax myrtle, 181 



Waxy casts in urinary sediments, 465, 470 



Weber's guaiac test for blood in feces, 235 



Weinland, formation of fat from protein, 179 



Weisz's urochromogen reaction for tuberculosis, 

 453 



Welker's electrical bath, 494 



modified method for purine bases, 515 



Welker and Marsh method for deproteinizing milk, 

 329 



Welker and Tracy method for deproteinizing 

 urine, 485 



Weyl's test for creatinine, 385 



Wheeler- Johnson reaction for uracil and cytosine, 

 133 



White fibrous connective tissue, 331 

 experiments on, 332 



Wiechowski-Handovsky method for determi- 

 nation of allantoin in urine, 518 



Wilkinson and Peters' test, 321 



Wirsing's test for urobilin, 401 



Witchs' milk, 317 



Wohlgemuths' method for quantitative deter- 

 mination of amylolytic activity, 192 

 Author's modification of, 239 



Wolter's method for determination of iron in 

 urine, 562 



Xanthine, 126, 127, 132, 346, 354, 401 



bases (see Purine bases, pp. 126, 346, 401) 



crystalline form of, 344 



formula for, 127, 346 



in urinary sediments, 458, 464 



isolation of, from meat extract, 351 



silver nitrate, 351 



crystalline form of, 351 

 test, 351 



tests for, 132 



Weidel's reaction for, 132 

 Xanthophylls, 319 

 Xanthoproteic reaction, 98 

 Xanthinoxidase, 5 

 Xylose, 20, 38 



orcinol reaction on, 38 



phenylhydrazine reaction on, 38 



Tollens' reaction on, 38 



Yeast, enzymes of, 2 



fermentation by, 42 

 nucleoprotein of, 128 

 preparation of, 128 

 tests on, 129 

 nucleic acid of, 125, 130 

 formula for, 125 

 preparation of, 130 

 tests on, 130 



Yellow elastic connective tissue, 333 

 composition of, 334 

 experiments on, 334] 



Zappert slide, 307 

 Zein, 67, 69, 93, 95, in 



decomposition of, 67, 69 

 Zeller's test for melanin, 452 

 v. Zeynek and Nencki's hemin test, 266, 430 

 Zikel pektoscope, 365 

 Zymase, classification of, 4 



preparation of, 2 

 Zymo-exciter, 7 

 Zymogen, 6, 186 



