INDEX 



673 



Tryptophane, 64, 66, 67, 76, 98, 189, 192 



bromine water test for, 192 



formula for, 76 



group in the protein molecule, 98 



Hopkins-Cole reaction for, 98 



mercury compound of, preparation of, 192 



occurrence of, as a decomposition product of 

 protein, 64, 66, 67, 76 



occurrence of, as an end-product of pan- 

 creatic digestion, 189, 192 



Tuberculosis, urochromogen reaction for, 468 

 Tussah silk fibroin, 67 

 Tyrosinase, 5 

 Tyrosine, 5, 64, 66, 68, 73, 85, 97, 189, 475, 480 



crystalline form of, 75 



experiments on, 85 



formula for, 76 



Hoffmann's reaction for, 85 



in urinary sediments, 475, 480 



microscopical examination of, 85 



Morner's test for, 85 



occurrence of,. 64, 66, 68, 189 



Piria's test for, 85 



salts of, 76 



separation of, from leucine, 84' 



solubility of, 85 



sublimation of, 85 

 Tyrosine-sulphuric acid, 85 



v. Udransky's test for bile acids, 211, 449 

 Uffelmann's reagent, preparation of, 173, 645 



reaction for lactic acid, 173 

 Unknown substances in urine, 469 

 Unorganized ferments, i 



sediments in urine, 475 

 Unsaturated acids, 180 

 Uranium acetate method for determination of 



total phosphates in urine, 568 

 Uracil, 124, 127, 132 



Wheeler-Johnson reaction for, 132 

 Urate, ammonium, crystalline form of, Plate VI, 



opposite p. 479 



sodium crystalline form of, 479 

 Urates in urinary sediments, 475, 478 

 Urea, 250, 251, 273, 278, 358, 386, 388, 389, 514 

 crystalline form of, 389 

 decomposition of, by sodium hypobromite, 



391, 393 



decomposition of, by urease, 391, 393 

 excretion of, 389, 391 

 experiments on, 392 

 formation of, 390 

 formula for, 389 

 isolation of, from the urine, 392 

 melting-point of, 392 

 quantitative determination of, in'blood, 278 



in urine, 514 

 Urea nitrate, 391, 393 



crystalline form of, 391 

 formula for, 391 

 c.jcalate, 391, 393 



crystalline form of, 393 

 formula for, 391 

 Urease, 4, 278, 391, 514, 646 



decomposition of urea by, 391, 393, 514 

 . preparation of, 515, 646 

 quantitative determination of urea by, 278, 

 514 

 43 



Uremia, blood in, 273, 274 



Urethral filaments in urinary sediments, 482, 490 

 Uric acid, 26, 126, 132, 136, 251, 273, 281, 358, 

 386, 394, 434, 475, 477. 493, 53O, 605. 

 606 



calculi, 493 



crystalline form of, pure, 397 

 endogenous, 395, 604, 606 

 exogenous, 395, 604, 606 

 experiments on, 397 

 formula for, 394 

 Ganassini's test, 398 

 in blood, 250, 251, 273, 281 

 in gout, 273, 283, 396, 604, 607 

 in leukaemia, 396 

 in urinary sediments, 475, 479 



crystalline form of, Plate V, oppo- 

 site p. 397. 478 



isolation of, from the urine, 397 

 metabolism, 604-607 

 murexide test for, 397 

 origin of, 395 

 quantitative determination of, in blood, 



Folin-Wu method, 281 

 in urine, microchemical color - 



imetric method, 530 

 Folin-Shaffer method, 532 

 Kruger-Schmidt method, 



533 



reagent, 646 



reducing power of, 26, 396, 398, 434 

 Schiff 's reaction for, 398 

 standard, 646 

 Uricase, 5, 126, 136 



experiments on, 136 

 Uricolytic enzymes, 3, 5, 126, 136 



experiments on, 136 

 Urinary calculi, 492 



calcium carbonate in, 493 

 cholesterol in, 495 

 compound, 492 

 cysfrine in, 493 

 fibrin in, 495 

 indigo in, 495 

 oxalate in, 493 

 phosphates in, 493 

 scheme for chemical analysis of, 494 

 simple, 492 



uric acid and urates in, 493 

 urostealiths in, 495 

 xanthine in, 493 



Urinary concrements (see Urinary calculi, p. 492) 

 Urinary sediments, 474 



ammonium magnesium phosphate in, 



475 



animal parasites in, 482, 491 

 calcium carbonate in, 475, 476 

 oxalate in, 475 

 phosphate in, 475, 477 

 sulphate in, 475, 477 

 casts in, 482, 484-489 

 cholesterol in, 475, 480 

 collection of, 474 

 cylindroids in, 482, 489 

 cystine in, 475, 479 

 epithelial cells in, 482 

 erythrocytes in, 482, 489 

 fibrin in, 482, 491 



