INDEX 



661 



Helicoprotein, 94 



Heller's ring test for protein, 102, 439 



Heller's test for blood in urine, 446 



Hemagglutination, 253, 265 



Hemagglutinin, 253, 265 



Hematein test for blood in feces, 228, 237 



Hematin, 112, 253, 257, 269 



acid-, 257, 303 



alkali-, 257, 302 



preparation of, 269 



reduced alkali-, 303 

 Hematoidin, 208, 225, 227 



crystalline form of, 208, 225 



in urinary sediments, 475, 481 

 Hematoporphyrin, 257, 376, 430, 459 



acid, 303 



alkaline, 302 



in urine, 376, 430, 459 

 Hematuria, 446 

 Hemicellulose, 20, 49 



experiments on, 50 



utilization of, by animals, 49 

 Hemin crystals, form of, 268 



tests, 267, 269, 446 

 Hemiurate, 478 



Hemochromogen, 112, 253, 257, 272, 202 

 Hemoconein (see Blood dust, 248, 259) 

 Hemocyanin, 94, 112 



Hemoglobin, 94, 112, 252, 253, 257, 258, 265, 269, 

 301 



carbon monoxide, 257, 301 



decomposition of, 253 



derivatives of, relationship of, 257 



diffusion of, 265 



met, 257, 302 



oxy, 253, 257, 269, 300 



quantitative determination of, 327 



reduced, 257, 301 

 Hemoglobins, 94, 112 

 Hemoglobinuria, 445 

 Hemolysis, 248, 264 



Henderson and Palmer's method for determina- 

 tion of hydrogen ion concentration, 500 

 Herter's naphthaquinone reaction for indole, 221 

 Herter's para-dimethylaminobenzaldehyde reac- 

 tion, 222 



Heterocyclic nucleus, 64, 67, 68 

 Heteroproteose, 96, 118 

 Heteroxanthine, 387,419 

 Hexone bases, 79 

 Hexosans, 20 



Hexoses, 19, 20 



Hippuric acid, 71, 386, 405, 413, 480, 537, 

 619 



crystalline form of, 406 



experiments on, 406, 619 



Folin and Flander's method for quantitative 

 determination of, 537 



formula for, 405 



in urinary sediments, 480 



Lucke's reaction for, 407 



melting-point of, 406 



Roaf's method for crystallization of, 407 



separation of, from urine, 406 

 solubility of, 407 



sublimation of, 407 



synthesis of, 407, 619 



demonstration of, 619 



Histidine, 64, 76 



hydrochloride, crystalline form of, 77 

 Knoop's color reaction for, 77 

 Histones, 93 



Hoffmann's reaction for tyrosine, 85 

 Homogentisic acid, 388, 411, 434 



formula for, 411 

 Hopkin's thiophene reaction for lactic acid, 



173 

 Hopkins-Cole reaction, 98 



on solutions, 98 

 on solids, 106 



Hopkins-Cole reagent, preparation of, 98 

 Hopkins-Cole reagent (Benedict modification), 



preparation of, 98 

 Hordein, 93, no 



Horismascope (see Albumoscope, 102, 440) 

 Hormones definition and discussion of, 184, 



335 



in blood, 184 



Human fat, composition of, 181 

 gastric juice, 143 



characteristics of, 147 

 collection of, 143 

 hair, composition of, 348 

 milk, differentiation from cow's, 332, 335 

 Hunter and Givens' modification of Kruger and 



Schmidt's method, 534 



Huppert-Cole test for bile pigments, 210, 448 

 Hurthle's experiment, 367 

 Hartley's test for acetoacetic acid, 454 

 Hyaline casts in urinary sediments, 482, 485 

 Hydrobilirubin, detection of, in feces, 225, 238 



extraction of, 239 

 Hydrochloric acid solution, N/io, preparation of, 



498 

 Hydrochloric acid of the gastric juice, 139, 



ISO 



origin of, theories as to, 139 

 seat of formation of, 138 

 Hydrochloric acid test for formaldehyde (Leach), 



340 



acid-zinc chloride solubility test, 48 

 Hydrogen ion concentration and titratable 



acidity, 158, 500 

 mode of expressing, 155, 308 

 of blood, determination of, 326 

 of urine, determination of, 499, 500 

 as influenced by diet, 613 

 by acids, 615, 616 

 by alkali, 615, 616 

 comparison of, with titratable 



acidity, 158, 161 



determination of, by. means of 

 indicators, 158, 500 



of McClendon's electrode, 



iSi 

 Hydrogen peroxide in urine, 387, 429 



detection of, in milk, 341 

 Hydrogenated fat, 180 

 Hydrogenation, definition of, 180 

 Hydrolysis of cellulose, 47, 48 

 cerebrin, 374 

 dextrin, 46, 47 

 glycogen, 367 

 inulin, 45 

 proteins, 63 

 starch, 42, 44 



