INDEX 



429 



Demarcation current, 134, 143, 145. 



Dendrites, 182, 184. 



Depolarisation, law of, 376. 



Dermatoptic function, 174. 



Destruction of enzyme, 94, 95. 



Dialysis, 67 ; experiments on, 408. 



Diaphragm, mechanics of, 304 ; structure 

 of, 303. 



Dielectric constant, 52, 53. 



Diffusiometer, 40, 398. 



Diffusion, coefficient, 262 ; factor, 262 ; 

 field of force of, 382 ; of colloids, 67, 

 413 ; of electrolytes, 413 ; of gases, 

 40, 398 ; of gases through membranes, 

 40, 41 ; potential. 52. 



Dimension of colloidal particles, 65, 74. 



Dioptric system of eye, 222. 



Diphasic electrical response, 144, 188, 

 296. 



Dispersant, 68. 



Dispersed phase, 67. 



Dispersion, degree of, 68. 



Dispersoid, 68. 



Displacement theory of hearing, 212. 



Dissociation constant of water, 55. 



Dissociation curve of oxyhaemoglobin, 

 249 ; effect of acid on, 253 ; effect of 

 carbon dioxide on, 253 ; effect of 

 electrolytes on, 248 ; effect of oxygen 

 tension on, 249, 250 ; effect of heat on, 

 252. 



Dissociation, temperature coefficient of, 

 63 ; theory of solutions, 44. 



Distance receptors, 191, 200, 215. 



Diuresis and oxygen consumption, 160. 



Diuretics, model to imitate action of, 

 414. 



Dynamic equilibrium, 163, 257. 



Ear, 200. 



Ecto-enzymes, 97. 



Effective surface of blood corpuscles, 243 ; 



of solvents, 65. 

 Efficiency, factors influencing, 395 ; 



" gross " (physiological), 391, 393 ; 



"net" (industrial), 391. 

 Efficiency of an engine, 6, 392 ; of animal 



as a machine, 34 ; of heart, 284 ; of 



lung mechanism, 311 ; of muscle, 138. 



141, 142, 143, 397; of organism as a 



whole, 391 ; of secretory glands, 154 ; 



of tympanic membrane, 203. 

 Elasticity, 168; of tissues, 169, 310. 

 Elastin, 172. 

 Electric charge on colloids, 78, 79 ; on 



ions, 50, 52 ; on surfaces, 47, 48, 



51. 

 Electric endosmose, 115, 399. 



Electric phenomena of cell, 132 ; of 

 muscle, 143, 405 ; of nerve, 188 ; of 

 secretion, 153, 154. 



Electrical conductivity, 50, 379, 4J- r >. 



Electrocardiogram, 295. 



Electrodes (anode and cathode), 50. 



Electrolytes, 44, 49 ; action of, on 

 colloids, 79 ; effect of, on dissociation 

 of Hb0 2 , 249. 



Electromagnetic theory of light, 53. 



Electrometer, capillary, 47, 259, 404. 



Electromotive force, 52. 



Electron, 117. 



Electron theory, 53. 



Electroscope, gold leaf, 121. 



Electrostatic attraction of ions, 52, 189. 



Electrotonic currents, 189. 



Emulsifying agents, 85. 



Emulsions, 83, 173, 414 ; effects of acid 

 on, 86, 378, 389, 415 ; effects of 

 anaesthetics on, 86 ; experiments on, 

 414, 415 ; fatty degeneration in, 389 ; 

 types of, 84. 



Emulsoids, 68 ; protective action of, 80, 

 413. 



Endocrinetes, 368, 373, 388. 



Endo-enzymes, 97, 389. 



Endosmosis, 399. 



Endothelium, 173. 



Endothermic reactions, 18. 



Energetics of karyokinesis, 383. 



Energy, absorbed by chlorophyll, 17 ; 

 available, 9 ; available, of cell, 36 ; 

 bound, 7 ; chemical receptors for, 

 192 ; conservation of, 4 ; consump- 

 tion of, by glands, 150 ; by kidney, 

 156 ; by muscle, 143 ; by nerve, 

 187; by organism, 388; by respira- 

 tory musculature, 311 ; degradation 

 of, 5, 8 ; free, 3, 8 ; index of heart, 

 286 ; kinetic, 6, 7, 8 ; laws of, 3 ; 

 necessary for dissociation, 54 ; of 

 food, 26 ; of growth, 373 ; of radiation 

 from sun, 14 ; potential, 6, 8 ; vibra- 

 tory, receptors for, 192, 193, 194, 200, 

 215. 



Enterokinase, 97. 



Entropy, 6. 



Enzyme action, 92 ; effect of anaes- 

 thetics on, 95 ; effect of hydrogen ion 

 concentration on, 95, 101 ; effect of 

 solutes on, 95 ; effect of temperature 

 on, 94 ; inhibition of, 100 ; reversal 

 of, 99. 



Enzyme activators, 97. 



Enzymes as catalysts, 93 ; chemical 

 nature of, 93 ; physical nature of, 93. 



Epithelium, 166, 375." 



