412 PROTOPLASMIC ACTION AND NERVOUS ACTION 



Chronaxia, 275 ff., 287 ff., 326, 

 327; relation to refractory 

 period, 338 



Cilia, 59, 165 



Circuits, bioelectric, as factors in 

 transmission, 382 ff.; local, 63, 

 221, 236, 260, 271, 274 



Colloids, 68, 69, 81, 85 ff. 



Compensation, of bioelectric cur- 

 rents in protoplasm, 397 



Conduction, of excitation, etc. 

 See Transmission 



Conductivity, electrical, of artifi- 

 cial membranes, 179; of cell- 

 interior, 122 ff.; changes during 

 activation or stimulation, 356, 

 361; of living cells, 118, 119, 

 122 ff., 130, 358, 359; of 

 medium in relation to trans- 



\ mission, 390 ff. 



Contact potentials, 236 ff. 



Contractile processes, 59, 60, 378 



Convection, electrical, of cells, 91, 

 99, 300 



Core-conductors, 380, 390 



Correlation, 11, of growth, 41, 42, 



399 ^^ 

 Cortical reaction, of egg-cells, 



360, 362 



Crystal forms, 32, z2>, 34 

 Crystallization, relation to growth, 



79, 225 

 Ctenophore, swimming plate of, 



45, 59, 60, 367 

 Cyclopia, 39, 40 

 Cytolysis, 58, 74, 166, 199, 208, 355 



Cytolytic agents, 57, 59; activa- 

 tion by, 355; stimulation by, 

 351 ff., 366, 367 



Cytoplasm, relations between 

 nucleus and, 17 



Death process, 48, 54, 56, 58, 59, 64 

 Decrement, transmission with, 



397, 398 

 Demarcation potentials, 160, 



306 ff. 



Depolarization, relation to stimu- 

 lation, 283, 284 



Development, 6, 7, 62; experi- 

 mental control of, 38, 39, 40 



Diffusion, 21, 48, 57, 102; as 

 factor in electrical stimulation, 

 279, 294; potentials,303,307,3i9 



Disintegration, polar, 277, 360 

 Distance-action, chemical, 260, 

 393; physiological, 393, 398 ff. 

 Dominance, physiological, 399 



Egg-cells, changes of permeability 

 during activation, 360 ff . 



Electric organs, 317 



Electrical activation, of passive 

 iron, 254, 255 



Electrical conductivity, of artifi- 

 cial membranes, 179; of cells, 

 118, 119, 122 ff., 130, 358, 

 359; of cells during activation 

 or stimulation, 356, 361; of 

 external medium in relation to 

 speed of transmission, 390 ff . 



Electrical convection, 91, 99, 300 



Electrical endosmose, 94, 147, 148, 

 300, 301 



Electrical sensitivity, of proto- 

 plasm, 46, 47 



Electrical stimulation, 273, 2745.; 

 secondary, 388, 389, 392 



Electrocatalysis, 220, 236 



Electrode potentials, 304 



Electrolysis, 63, 219, 220, 235 ff., 

 252 ff., 277, 282, 298, 403, 406; 

 intermittent, 250; as factor in 

 transmission, 253, 382; at sur- 

 face of membranes, 407 



Electrolytic oxidations and reduc- 

 tions, 282 



Electrostatic conditions, in nerve 

 transmission, 390 



Electrostenolysis, 406, 407 



Electrotonic currents, 358 



Electrotonus, 256, 277, 395 ff. 



Emulsions, 67, 68, 70 ff., 98, 104, 

 177 



