INDEX 



539 



Enterokinase, 434, 437 

 Entropy, 496 



Environmental factors, 276 

 Enzymes, 13, 103. 113-115. 119, 126 [[, 

 (126), 277, 392, 423 



action of, -iO-t 



activators, 141 



adaptive, inducible, 127, 134, 194 



biosynthesis of, (134) 



carboxylation, (155) 



classification of, 127, 130 



formation of, 134 



isomerizing, 155 



kinetics of, 137 



practical utilization of, 155 



stability of, 127 



substrate concentration and, 137 



synthesis of, 493 



yellow, 130 

 Eosinophiles, 294 

 Ephedrine, (309) 

 Epidemics, 48 



Epiniphrine (adrenaline), 314, 444, 447 

 Epithelial tissue, 301 

 Equilenin, (322) 

 Equilibria, 39 



Equilibrium constant, 36, 40, 144 

 Equilin, (322) 

 Erepsin, 437 

 Ergocalciferol, 356 

 Ergosterol. 93, (94), 195 

 Ergot, 109 



Ergotamine, 108, (109) 

 Erucic acid, 230 



Erythrocytes, (291), 292 ff, 297, 317, 373, 

 375, 382, 389; see also Red blood 

 cells 



function of, 293 

 Erythrose-4-phosphate, 212 

 Eserine, (309) 

 Esophagus, 425 

 Essential amino acids, 119, 296, 324, 412, 



417, 466, 478, 479, 493 

 Essential elements, 36S ff 



roles of, 401 ff 

 Essential fatty acids, 460 

 Essential oils, 199 

 Esterases, (148") 

 Esterification, 77 

 Estradiol, (322) 

 Estriol, (322) 

 Estrogens, 322 

 Estrone, 322 

 Ethanol, 170 



Ethanolamine, (90), 107, 468 

 Ether extract, 408, 503 



Ethyl ether, 408 

 Etiolation, (278) 

 Evaporation, (22) 

 Exchange capacity, (261) 

 Excretion, 31 1 

 Exocellular enzymes, 148 

 Exudative disease, 391 



Factors, biotic, 276 



climatic, 276 



edaphic, 276 

 FAD, see Flavin adenine dinucleotide 

 Famines, 477 

 Farnesol, (201) 

 Fat constants, 86 

 Fat depots, 81, 310,452 

 Fats. 74, 76, 79-.'?/ ff, 88. 93. 234, 240, 310, 

 326-328, 499 



absorption of, 298 



and oils. 191 



animal, 419, 153 



catabolism of, 454 



chemical properties of, 82 



hydrolysis of, 82-84, 454 



metabolism of, 240, 454 



occurrence of, 81 



respiratory quotient of, 505 



tung, 77 

 Fat-soluble vitamins, 194 

 Fatty acids, 74 ff, 82, 86-88, 231, 342, 454 



biosynthesis of, 457 



branched-chain, 229 



free, 87 

 Feathers, 301 

 Feces, 270, 403, 484 



bile pigments in, 485 



general composition of, 484 



hematin in, 485 



porphyrin in, 485 



source of, 484 

 Federal Food and Drug Act, 409 

 Feeding of the young, 311 

 Feeds, 406 ff 



composition of, 407 

 regulation of, 409 

 Fehling's test, 58 

 Fermentation, 155 

 Ferritin, 382, 403, 471 

 Ferrous sulfate, 413 

 Fertility, 257, 263 

 Fertilizer, 4, 7-9, 235, 261, 263 ff 



phosphate, 267 



potash, 268 

 Fibrin, 296, 97, 370 

 Fibrinogen 295-297, 370, 492 

 Fibrous proteins, 114, 116 



