496 



PHYSIOLOGICAL, EEGULATIONS 



Compartments, and maintenances, 393 



in body, 236 

 Compatibility, among exchanges, 375 



among properties, 413 f . 

 Compensation, reactions of, 5, 390, 396 

 Complacency, 446 

 Components, 2, 397 



adjustment, in man, 372 



relative rates of exchange, 391 ff., 400 £f. 

 Composition, biochemical, 241, 459 

 Conclusions, about constancies, 477 ff. 

 Conditions, environmental, defined, 397 



diversity of, 169 

 Constancies, see Maintenance, Eegulations 

 Content, defined, 397 



water, 195-201 

 Contributions to biology, in this investiga- 

 tion, 476 

 Coordination, among physiological facts, 



436, 467 

 Corixidae (bugs), 375 

 Correlations, empirical, 409 



multiple, 415 



types of, 398 

 Correlatives, search for, 424 

 Creatinine, elimination of, dog, 378, 380 



man, 372, 378 

 Cuvier's rule, 412 



Death, see Irreversible change, EeversibU- 



ity of loads, Survival 

 Deceleration, of exchanges, 178 f ., 407 

 Defense, reactions of, 390 

 Deficit, absolute and relative, 63 



see also Water, deficit 

 Dehydration, 50, 60, 65, 411 



see also Water, deficit 

 Description, use of, 8, 427 ff. 

 Design of experiments, 417 f., 424 

 Detection, of water, 195 



see also Behavior 

 Deviations, 361 



Diagram, see Equilibration, Tolerance 

 Difference, coefficients of, 74, 175, 362 

 Dilutions, of parts of body, 210-213, 398 

 Dipodomys (kangaroo rat), 198 

 Disappearance curves, 358 

 Disease, 450 f . 

 Displacement, see Load 

 Disposal, see Exchanges 

 Distribuend, of volume, 153 



Distribution, volume of, see Volume of dis- 

 tribution 

 Diuresis, see Water exchange 

 Dog, carbon in, 329 



Eck-fistula, 58, 68 f . 



esophageal-fistula, 47 



glucose in, 332-340 



heat in, 305 



nitrogen in, 330 f. 



various components in, 361, 378, 380, 391 



water in, 17-87, 184, 186 



young, water relations in, 266-268 

 Drinking, 27-30, 47, 76, 180-183 

 Duck, heat load in, 305 

 Dynamics, 256 



see also Forces 



Earthworm, see Lumhricus 

 Echinoderm egg, water in, 144-146 



see also Arbacia 

 Eck-fistula, 68 f. 



reversed, 58 

 Economy, of structure, 383 



quotients, at various heat loads, 305; at 

 various water loads, 82, 170 f . ; de- 

 fined, 48, 203, 374, 397 

 Electrolytes, in man, 411 

 Elephant, 182, 198 

 Emergents, 416 

 Energy, in water turnover, 200 



laws of, 302 



metabolism of, 229, 274 f . 



total, in body, dog, 328 

 Environments, 475 

 Equilibration, x, 397, 446, 463, 474 



diagrams, defined, 32; dog, 32, 40, 391; 



heat, 308; in general, 40, 190-194, 



203, 394 ff. ; net, 190 f . ; total, 190 f . ; 



water, 188-195 



Equilibrium, kinetic, 192, 364, 397, 444 ff. 



positions of, 189 

 Equivalences, physiological, 416 

 Erythrocytes, count of, 240 



volumes of, 155, 164 

 Evaporation, see Heat, paths of exchanges 

 Exchange diagram, 40 

 Exchange-velocity diagram, 40 

 Exchanges, rates of, 369, 373 ff., 397 



in general, 4 



in relation to content, 205 



maximal, man, 372 



