666 



INDEX 



Nitrites in saliva, test for, 58 

 Nitrogen, 62, 63 



forms of, in protein molecule, 63 

 importance of, in sustaining life, 63 

 in urine, quantitative determination of, 522 

 Nitrogen distribution, calculation of, 523 

 Nitrogen iodide, formation of, 45 1 

 Nitrogen "lag," 602 



metabolic product, 230, 622 

 "partition," 506, 608, 610 

 Nitrogenous extractives of muscular tissue, 358, 



367 



formulas for, 364 



^-Nitrophenol, use of, as indicator, 161, 501 

 Nitroprusside reaction for indole (Legal), 221 

 Nitroprusside test for creatinine (Weyl), 402 

 Nitroprusside-acetic acid test for creatinine 



(Salkowski), 402 

 Nitroso-indole nitrate test, 222 

 Nitrosothymol, formation of in Heller's test, 440 

 Non-nitrogenous extractives of muscular tissue, 



358 

 Non-protein nitrogen of blood, 251, 273, 277, 



278 

 Normal urine, 376, 386, 388 



characteristics of, 376 

 constituents of, 386, 388 

 experiments on, 402-429 

 Novaine, 358 



formula for, 364 

 Nubecula, 414, 444 

 Nucleases, 5 



experiments on, 133 

 Nucleic acid, '1 23-1 27, 130-136 

 decomposition of, 123-125 

 experiments on, 130-136 

 from yeast, formula for, 124 

 Nucleicacidase, 5, 125 

 Nucleins, 122, 123, 144, 604 

 Nucleoproteins, 94, m. 122, 127-131, 206, 210, 



239, 370, 386, 414. 430, 444 

 decomposition of, 122123 

 experiments on, 127130 

 from yeast, 127 



preparation of, 127 



protein, carbohydrate and phosphoric 



radicals in, 129 

 tests dn, 128 

 thymus, preparation of, 129 



experiments on, 129 

 in bile, 206, 210 

 in feces, 239 

 in nervous tissue, 370 

 in urine, 386, 414, 430, 444 



test for, 444 

 occurrence of, 122 

 Ott's precipitation test for, 444 

 Nucleosidase, 5, 125 

 Nucleoside, 124 



Nucleotidase, 125 . 



Nucleotide," 124 

 Nylander reaction, 28, 436 

 Nylander reagent, preparation of, 28, 436 



Obermayer's test for indican, 405 



reagent, preparation of, 405 

 Oblitine, 358 

 "Occult" blood in feces, 228, 236 



" Occult " blood in feces, tests for, 236 

 Olein, 1 80, 329 

 Olive oil, 183 



emulsification of, 183 

 neutral, preparation of, 183 

 Oliver's peptone test for bile acids, 212 

 Optical methods, 30-33 

 Orcinol-HCl reaction (Bial), 37, 458 

 Orcinol test, 37, 458 



Organic physiological constituents of urine, 386 

 Organized ferments, i 

 Organized urinary sediments, 472, 480 

 Ornithine, 64, 217 



Ortho-tolidin test for blood, 173, 236, 266, 446 

 Osborne-Folin method for determination of total 



sulphur in urine, 566 

 Ossein, 354 



preparation for, 354 

 Osseoalbumoid, 354 

 Osseomucoid, 94, 112, 354 



chemical composition of, 112 

 Osseous tissue, 354 



experiment on, 355 

 Ott's precipitation test for detection of nucleo- 



protein in urine, 444 

 Ovalbumin, 92 

 Ovoglobulin, 93 



Oxalated plasma, preparation of, 271 

 Oxalic acid, 386, 408 



experiments on, 408 



formula for, 408 



in urine, 386, 408 



standard solution of, preparation of, 49? 



quantitative determination of, 562 

 Oxaluria, 408 

 Oxaluric acid, 386, 410 

 Oxamide, 99 

 Oxidases, 5, 14. 336 



experiments on, 14 

 Oxyacids, 215, 223, 386, 4" 



tests for, 223 

 /3-Oxybutyric acid (see 0-hydroxybutyric acid, 



273, 305, 306, 310, 430, 450, 454. 552, 554) 

 Oxygen in blood, determination, of, 327 

 Oxyhemoglobin, 63, 253, 257, 258, 269 



crystalline forms of, 254-257 



Reichert's method for crystallization of, 269 

 Oxymandelic acid (see Hydroxymandelic acid, 



386, 412) 



Oxyproline (see hydroxyproline, 64, 66, 84) 

 Oxyproteic acid, 386, 409, 466, 568 



Palmitic acid, 179, 180, 184, 185 

 crystalline form of, 185 

 experiments on, 185 

 formula for, 180 

 preparation of, 185 

 Palmitin, 180 

 Pancreatic amylase, 4, n, 190, 195 



digestion of raw starch by, 191, 195 



inulin by, 195 

 experiments on, u, 194 

 influence of bile upon action of, 195 

 most favorable temperature for action 



of, 195 

 Pancreatic' digestion, 188 



general experiments on, 193 

 products of, 189, 192 



