826 



INDEX 



Glyceric aldehyde, relation of, to glucose, 



274 



Glycerol formed from glucose, 275 

 Glycine, state of, in water, 232 

 Glycogen, 280 

 Glyoxalase, 275 

 Gold number, 97 

 "Good " experiments, xii 

 Graaf, Rene de, figure of dog with fistulae, 



371 



portrait of, 371 

 Graafian follicles, 714 

 Graham, portrait of, 76 

 Graphic method, 460 



Grass toxic to apple trees, 723 



Green plant, food requirements of, 248 



nitrogen food of, 251 

 Grey rami, 484 

 Grignard's reagent, 559 

 Grotthus' law, 548 



Growth, accessory factors for, 254 

 supplied by mother, 258 



in vitro, 23, 287, 727 



of yeast, mathematical law of, 290 

 Guaiaconic acid, oxidation of, 584 



H 



Habit in insects and earthworm, 482 

 Hitmatin, 5CO 

 Htematinic acid, 560 

 H.tmatocrite, 120 

 Ha;matoporphyrin, 560 

 H.-emin, 560 

 Haemocyanin, 613 



and phase rule, 618 



Haemoglobin, action of salts on dissociation 

 of, 215 



aggregation of, 623 



an electro-positive colloid, 70 



and phase rule, 617 



as colloid, 616 



infra-red absorption of, 625 



molecular weight of, 621 



optical properties of, 625 



osmotic pressure of, 159 



relation of, to chlorophyll, 560, 561 

 Hsemolysin, action of salts on, 215 

 Haemolysis, 133, 140 



If: i -mo-pyrrol, 561 



Hales, blood pressure experiment of, 671 



on mathematics, 37 



portrait of, 671 

 H.illwachs' effect, 571 



Hardness as test of muscular tone, 538 

 Hardy's law of valency. 92 



rule, 92 



MJII ninny witli nature, Bernard on, xi 

 Harmosones, 707 



Harvey and the circulation of the blood, 666 



portrait of, 665 



Harvey's manuscript notes, 666 

 Head, evolution of, 477 

 Head's diaphragm slip, 633 

 Hearing, evolution of, 527 

 Heart beat, origin of, 678 



oxygen consumption of, 612 



sounds, 675 



Heat, action of, on enzymes, 311, 318 



centre, Harbour's experiments on, 457 



coagulation of proteins, 106 



formation in secretion, 343 



of adsorption, 61 

 of gases, 621 



of combination of oxygen and haemo- 



globin, 620 



of combustion, 32 



of neutralisation of acids, 184 



production, 289 



in muscular work, 450 



in relation to rate of stimuli, 451 



in restoration of muscle energy, 446 



of, in muscle, 444 



Heliotropic curvature, 126 



Helmholtz double layer, 53, 89, 120, 158, 



178 

 at membranes, illustration of, 646 



portrait of, 519 

 Henry's law, 619 



Bering's theory of vision, 522 

 Hermaphrodite ion, 220 

 Herpes zoster, Head's work on, 290 

 Heterogeneous reactions, illustration of 

 snails, 326 



systems, 45, 75, 78 



reactions in, 306 



Heteropods, senses of, 511 

 Hibernation, metabolism in, 278, 289 

 High frequency currents, mode of action <>f, 



382 



Hirudin, 360 



His, bundle of, 679 



Histological staining, object of, 9 



Hoff, J. H. van't, photograph of old labora- 

 tory of, 320 



of, with Ostwald, 321 



of workroom of, 319 



portrait of, 33, 34 



researches of, on enzyme action, 305 



theory of osmotic pressure, 147 



of solutions, 33 



Hofmeister series, 97 

 Homogentisic acid, 431 , 43-J 



in geotropism. 432 

 Homoiothermic animals, 4">ti 

 Hormone, meaning of, 706 

 Hormones as messengers, 706 



in plants, 723 



Horned sheep, Mendelian characters of, 294 

 Huxley on physiology, vii 





