41 6 PROTOPLASMIC ACTION AND NERVOUS ACTION 



Resistance, electrical, of plasma 

 membranes, 103, 118. See Con- 

 ductivity 



Response, general features of 

 organic, 8; inhibitory, 45 



Rhythm, in activity of living 

 cells, 251, 331; in bioelectric 

 phenomena, 330 ff.; in surface- 

 reactions, 247, 250 



Salts, inorganic, action of pure 

 solutions, 164 £f.; action on 

 permeability, 119, 174 ff., 351; 

 antagonisms between salts and 

 anaesthetics, 211, 352; antago- 

 nistic action of, 155, 157, 158, 

 164 ff., 176,^ 181 ff., 351; 

 balanced action, 1675.; in 

 cells, 117, 120 ff., 160; physi- 

 ological action of, 151 ff.; sensi- 

 tization by, 162, 3675.; stimu- 

 lation by, 166, 351 ff. 



Secondary stimulation, 388, 389, 



392 

 Secretion, 94, 140, 374 



Semi-permeability, 20, 57, 58, 

 103, 109; factors in, 132, 302. 

 See Permeability 



Sensitivity, chemical, 266; light, 

 266. See Irritability 



Sensitization, by salt-solutions, 

 162, 3675.; specific, 370. See 

 Anaphylaxis 



Soaps, relation to protoplasmic 

 structure, 58, 180, 185 



Specific energies, law of, 267 



Specificity, 5, 30 ff. See Synthe- 

 ses, specific 



Square root law, 279, 282, 286 



Stabilization, of protoplasmic 

 structure, 207 ff.; of suspen- 

 sions, 230, 231 



Stationary systems, 48 



Stimulation, bioelectric variations 

 in, 297, 312 ff.; changes of 

 polarization in, 275, 276 ff., 294; 

 chemical, 266; dependence on 

 surface changes, 269 ff., 296 ff.; 



electrical, 46, 285 ff.; general 

 features, 8, 43 ff., 50, 51, 60, 62, 

 74, 259 ff.; by light, 266; 

 mechanical, 271; membrane 

 changes in, 207 ff., 297, 302, 

 337 ff., 346 ff. {see Permea- 

 bility); by salts, 166; summa- 

 tion in, 277, .291 ff.; time- 

 relations of, 278 ff. 



Structure, protoplasmic, relation 

 to chemical activity of li\'ing 

 matter, 52 ff., 63. See Proto- 

 plasm 



Summation, in activation of 

 passive iron, 255; in . stimu- 

 • lation, 277, 291 ff. 



Surface-activity, 82, 90, 187; 

 relation to contact potentials, 

 236 ff.; relation to ph3'siologicai 

 action, 187, 196 ff., 217 



Surface-films. See Films, inter- 

 facial 



Surface-tension, 71, 72, 78, 90, 

 178, 192, 198 ff., 237, 238, 249 



Synapses, 272 



Synchronous activity, of cells, 392 



Syntheses, as basis of growth and 

 development, 3, 4 ff., 42 ff'., 54, 

 217; dependence on proto- 

 plasmic structure, 53, 54, 63; 

 electrical factors in, 402; rela- 

 tion to protoplasmic interfaces, 

 217, 218; specific, 27, 30, 31, 

 34 ff., 42, 48, 53, 54, 63 



Temperature-coefficients, 44; of 

 bioelectric variations, 316, 321, 

 333 ff.; of demarcation poten- 

 tials, 319; of minimal duration 

 of threshold stimulus, 286, 292; 

 of summation-interval, 292; of 

 protoplasmic transmissions, 341, 

 342; of recovery of trans- 

 missivity in passive iron, 

 346; of refractory period, 292, 

 341 



Transmission, in nerve and other 

 protoplasmic systems, 152, 

 259 ff., 267 ff., 379 ff.; in passive 



