376 



Subject Index 



Rat — continued 



newborn, 210 



Nonvay (see Norway rat) 



Osborne-Mendel, 17 



ovarian atrophy, 220 



pituitarj^ 236 



pituitary-adrenocortical activity, 273 



pneumococcal infection, 256 



postparturitional loss, 221 



pregnant, 210 



release of iodine, 238 



splenic hypertrophj^ 274 



streptococcal infection, 256 



submaxillary glands, 240 



subordinate, 303 



testes, 239 



of immature, 238 



thiouracil treatment, 239 



thyroid, 232 



thyroid activity, 235, 237 



thyroidectomized, 228 



tuberculosis infection, 256 



uptake of radioiodine, 233 



white, 237 



wild, 195 

 Rat embryos 



action of estrogens, 259 

 Rat society, 161 



velocity in high-density, 168 



velocity-rank relationships in, 168, 169 

 Rattus (see rat, Norway rat) 

 Rattus alexandrinus, 195 

 Rattus norvegicus, 195 



adrenalectomized, 202 



medullar}' hypertrophy, 227 



relationships between population den- 

 sity and reproduction, 310 

 Recapture radii, 5, 6 

 Receptor, 50 

 Refractory period, 49, 141, 153, 176 



duration, 103, 112 



frustrating, 110 



frustrating type, 131 



frustrating producion, 112 



increasing, 130 



satisfaction producing, 112 



time spent in satisfying, 112 

 Refractory state 



maximal, 109 



optimal, 109 



Regression line, 81 



Reichstein's compound S, 199, 205 



Reithrodontomys, 6 



Rejection 



psychological, 183 

 Relationships 



spatial, 64 



summary of presumed, 137 

 Relative densitj', 78 

 Relative probability, 45 

 Removal study 



Chadwick Woods, Montgomery Count}', 

 Maryland, 29 



Rich Lake Island, New York, 27 

 Removal trapping 



observed data, 52 

 Renal nephron 



tubular cells, 201 

 Reproduction, 190, 286-291 



evaluating the effects of densit}' on, 308 



inhibition, 309 



mice, female, 291 



mice, male, 286 



sexual, 133 



suppression, 222, 257 

 Reproductive 



inhil)ition, 220 



function, 292 

 evaluation, 306 



inhibited by population density, 292 

 inhibition, 323 



organs 



accessory weights, 287 

 Reserpine, 225 

 Response 



avoidance, 93 



degree, 192 



endocrine, 191 



inflammatory, 210 



intensity, 151 



neural, 191 



neuroendocrine, 191 



nonspecific, 192 



vascular, 191 

 Response-evoking capacities, 143, 146 

 Response-evoking capacity 



S 



behavioral origin, 140 



circumplex depiction of behavior and 

 personality superimposed upon, 157 



' 



