500 



PHYSIOLOGICAL EEGULATIONS 



Bhodnius (bug) , water in, 137 f . 

 Ehythms, physiological, 420 

 Eun, in time series, 74 



Saliva, flow of, 227, 243 



Schemes, conceptual, 426 



Season, and water turnover, 276 



Selection, among environments, 5-6 

 see also Behavior 



Sensibility, of turnover, 82 



Sensitivity, to load, 5 



Sequences, in time, 74, 366 ff., 414, 420, 

 439 ff. 



Significances, of facts, 410 



Signs, of abnormality, 448 

 of load, 448 f . 



Size, of body, and water exchanges, 177, 

 180, 263-275 



Skin, healing of, rate, man, 356, 372; tol- 

 erance curve, 392; velocity quotient, 

 379 



Snake, 362 

 Boa, 318 

 garter, 132-134 



Sodium, deficit of, 411 



Sodium chloride, solutions infused, dog; 57, 

 62 f. 



Solutions, and water exchanges, dog, 56 f . 



Species, diversities among, 390 ff. 



physiological characterizations of, 281, 

 390 



Specific gravities, of animals, 195; of 

 urine, 224 



Speculations, about regulations, 453 ff. 



Stability, of function, 103 



Stabilization, 440 



see also Maintenance, Regulations 



Standard deviation (a), 74 

 difference (SA), 74 

 error (S.E.), 74 



States, physiological, 366 ff ., 385, 397 ; bal- 

 anced, 35, 367; control, 367; loading, 

 367, 397; normal, 364; recovery, 367- 

 369; stationary, of exchanges, 41-48, 

 93-95; of load, 41 f., 367 f., 385, 397 



Storage, 212 f . 



Stroke volume, of heart, 354, 406 



Substance, body, total, exchanges of, man, 

 323, 326, 372, 378; dog, 324 ff., 378, 

 380 ; rabbit, 323 ff . ; rat, 325 ff . ; paths 

 of, mammals, 381 



Sucrose, elimination of, man, 372 



infusion of, dog, 59, 61, 66 

 Surface area, of body, 264 ff. 

 Sweat, chloride in, 376 

 Survival, 447, 465 f . 

 Synthetic (chemical) exchanges, 381 

 System, water-time, 40, 86, 168, 263 



water-time-gradient, 263 



Tadpole, tail of, regeneration in, 354 ff. 



water turnover in, 269 

 Temperature, and water exchanges, 275 



rectal, dog, 36, 303; man, 303; rabbit, 

 313, 315, 317 



regulation, see Heat 

 Termites, water relations of, 183 

 Tests, of load, 105, 295, 449 



water, 105 f . 

 Theories, defined, 454 



of regulations, 467 ff. 



of water maintenance, 296 

 Thermostat, in body, 321 

 Therapeutics, rationale of, 450 

 Thirst, 60, 232, 245 



Thyroxin, and water exchange, dog, 55, 58 

 Time, as a variable, 283 



constant, defined, 388 



intervals, 203-205 



physiological, 169 



relations, in water exchanges, 178-188, 

 203 



series, analysis, 74 

 Tissues, changes in, 253, 289, 389 f.; dog, 

 212; frog, 246 



dilution of, dog, 251; frog, 247-248, 251; 

 rabbit, 249, 251; rat, 250 f. 

 Tolerance curves, 40, 359, 367, 392, 397 



diagram, see curves 

 Tolerated loads, total substance, 325 



water, 201 f. 

 Transfusions, rabbit, 153-157 

 Turnover (rates), measurement of, 363, 374, 

 397 



man, 372 



variabilities, 78-84 



water, 78, 195-201 

 Turtle (Gopherus), 318 



Uniformities, see Generalizations 

 Unit, living, 397 



