430 



INDEX 



Equilibrium, 97, 99, 164, 363 ; is death, 



2, 331, 377. 

 Erepsin, 101. 

 Ergometer, 393. 

 Errera's rule, 370, 376. 

 Erythrocyte, 164, 241, 242, 267, 398. 

 Eustachian tube, 206, 207. 

 Evolution of alimentary canal, 132, 313 ; 



of nervous system, 131, 182 ; of 



temperature regulation, 337. 

 Excitation of cell, 131, 134 ; of muscle, 



137, 138; of nerve, 183, 192; of 



secretion, 149, 153. 

 Excretion, 132, 156, 164, 318. 

 Exosmosis and development, 379. 

 Exothermic reactions, 19. 

 Exteroceptors, 191. 

 Eye, 215. 



Faraday-Tyndall phenomenon, 70, 409. 

 Fat, energy value of, 22 ; function of, 



173, 341 ; formation of, 18 ; invisible 



in cells, 173, 389 ; visible in cells, 173, 



389. 

 Fatigue, in muscle, 141, 147 ; (forced 



respirations), 312 ; in nerve cells, 187 ; 



in nerve fibres, 187. 

 Fatty degeneration, 87, 173, 389 ; role 



of acids in, 86, 389. 

 Ferrocyanide membranes, 398, 399. 

 Fertilisation, increased permeability in, 



384 ; spermatozoon and, 380. 

 Fibrin, 235. 

 Fibrinogen, 234. 

 Fibrous tissue, 171. 

 Flow through tubes, 277. 

 Food, changes of, in digestion, 316 ; 



composition of, 87 ; energy value of, 



26 ; requirements for growth, 372. 

 Force, fields of, 381. 

 Form, symmetry of, 381. 

 Formaldehyde in photosynthesis, 17. 

 Free energy, 7, 138, 377, 380, 381. 

 Freezing point, determination of, 399 ; 



of urine, 157. 

 Friction, 243, 336. 



Galvanometer, string, 296. 



Gas constant, S, value of, 39. 



Gas dispersions, 68. 



Gas laws, 38, 39. 



Gas, pressure of, cause of, 39. 



Gay Lussac's law, 38. 



Gel, 69. 



Gelatine, imbibition by, 411. 



Gelation, 79, 409. 



Gijbbs -Thomson principle, 48, 152, 175. 



Glands, mode of stimulation of, 153. * 



Glomerulus of kidney, 162. 

 Gold number, 80. 



Gold, preparation of colloidal, 412. 

 Graham, 40, 41, 69. 

 y rays, 120. 



Growth, 132, 315, 363 ; and form, 375. 

 Guanidin salts, dissociation of, 49. 

 Guldeberg & Waage, Mass action, 55, 

 61, 368. 



Haematocrite, 241, 422. 



Haemodynamics, 278, 423. 



Haemoglobin, 242, 248, 334. 



Haemolysis, 108, 243, 378. 



Harvey's work on circulation of blood, 

 276. 



Hearing, 211. 



Heart, efficiency of, 284 ; physical 

 (Ostwald's), 404 ; structure of, 275, 

 286 ; sounds, 290 ; thickness of walls 

 of, 286 ; valves of, 288 ; work done 

 by, 280. 



Heat, action of, on chemical reactions, 

 370 ; on efficiency, 141 ; on emulsoids, 

 81 ; on enzymes, 94 ; on physical 

 phenomena, 370. 



Heat centre, 350. 



Heat, of combination, 54 ; of combus- 

 tion, 22 ; of dilution, 22, 54 ; of 

 hydration, 54 ; 



Heat production, 34, 347, 349 ; in glands, 

 154 ; in muscle, 138, 145 ; in nerve, 

 188. 



Helicotrema, 209. 



Heliotropic machine, 357. 



Heliotropism (phototaxis), 131, 354. 



Helmholtz-Lippmann, double layer, 47, 

 51, 151, 152. 



Helmholtz on ear, 211, 213. 



Henry's law, 247. 



Hess's law, 293. 



Hibernation, temperature regulation 

 during, 337. 



Hirudin, 238. 



Hoff, J. H. van't, 37, 43, 111, 186. 



Hoffmeister series, see Lyotropic series. 



Homoiothermic animals, 337. 



Hormone, 231. 



Hunger, sensation of, 198. 



Hydration of colloids, 66, 69, 82 ; ions, 

 50, 110. 



Hydrogen electrode, 422. 



Hydrogen ion concentration, 56 ; mea- 

 surement of, 421 ; of blood, 232. 



Hydrol, 55. 



Hydrolysis, by enzymes, 96, 389. 



Hydrophilic colloids, 173. 



Hydrosol and hydrogel, 69. 



