622 



INDEX OF SUBJECTS 



Islets, of Langerhans, 401 



Isobutylamine, effect of, on blood-pres- 

 sure, 186 



Isodynamic foodstuffs, 396 

 values of, 575 



Isolactose, 76, 80 

 synthesis of, 223 



Isoleucine, 134 



Isomaltose, 76, 79, 222 



Isomannitol dilaurate, absorption of, 235 



Isomorphism in hemoglobin crystals, 357 



Isomorphous salts, physiological action 

 of, 310 



Isotonic solutions, 263 



JAFFE'S reaction, 195, 548 

 Japan wax, 112 

 Jaundice, 105 

 Jecorin, 117, 349 

 Jellies, 298 



KEPHALIN, 116, 344 



in blood coagulation, 345 



saponification of, 196 



thromplastic powers of, 346 

 Kephir yeast, 79, 223 

 Kerasin, 91 

 Keratin, 121, 127, 509 



composition of, 245 



cystine content of, 136 



properties of, 599 

 Ketone structure of sugars, 58 

 Ketoses, 62 



Kidney, development of, in protoverte- 

 brates, 270 



one-sided permeability of, 291 

 Krause's membranes, 442 



LACCASE, 346, 412 



function o/ manganese in, 413 

 synthetic, 413 

 Lactalbumin, 492 

 Lactase, 78, 79, 223 



absence of, from digestive juices, 229 

 in gastric juice of calf, 228 

 Lactic acid, 397 



in carbohydrate oxidation, 438 

 effect of, on peptic hydrolysis, 



217 

 fatigue product of, in muscle, 



217 



in muscle fatigue, 439 

 oxidation of, in diabetes, 404 

 of fats and sugars, 399 

 of glycogen, 397 

 in respiratory control, 524 



Lactic acid in urine, 541 



of hibernating animals, 539 

 (8-Lactic acid, 411 

 Lactone structure of sugars, 72-74 

 Lactose, 72, 76, 79, 223 



in diabetes, 404 



possible forms of, 80 

 Laminaria, Osterhout's experiments with, 



323 

 Lanoline, 101 



non-absorption of, 235, 237 

 Large intestine, absorption from, 252 

 Latent period in muscle stimulation, 428 

 Laurie acid, 235 

 Lavosin, 86 

 Law of conservation of energy, 567-575 



of mass action, 203 



Least squares, method of, in biochemis- 

 try, 26 

 Lecithin, 90, 115 



absorption and digestion of, 237 



distribution of, in cell, 284, 286 



formula, 113 



as growth catalyzer, 500 



in nuclear synthesis, 463, 469 



retardation of development by, 464 



saponification of, 196 



source of methylamine in putrefac- 

 tion, 185 



Lecithoproteins, 129 

 Leucine, action of ultraviolet light on, 

 433 



crystal form of, 137 



formula, 134 



Leucyl-diglycyl-glycine, 142 

 Leucyl-glycyl-glycine, 141 

 Leukocytes, 335 

 Leukocytosis, 341 

 Levulinic acid, 62, 174 

 Levulose, 77, 230 



in diabetes, 404 



distribution of, 71 



in urine, 229 

 Lichenin, 86 

 Lichens, 86 



Lieberman-Burchard reaction, 99 

 Liesegang rings, 301 

 Life duration, effect of temperature on, 



426 



relation of, to cephalization fac- 

 tor, 517 



processes, influence of light on, 429 



of temperature on, 417 

 Lifschutz's reaction, 100 

 Light, influence of, on life processes, 429 

 Lignification, 84 

 Lignin, 84 

 Lignoceric acid, 91 



Limulus, composition of blood serum of, 

 269 



effect of temperature on heart gang- 

 lion of, 421 

 i Linseed oil, 111 

 JLipase, 107, 115, 234 



in gastric juice, 232 



