Subject Index 



369 



Gravidum, 309 

 Ground squirrels 



thirteen-lincd, 196 

 Group dynamics 



formulation, 101 

 Group size 



basic, 3 



change, 125 



effect on reproduction, 91 



optimum, 2 



saltatorial changes in the basic, 122 



satisfaction and frustration as a function 

 116 

 Growth, 254 



effects of increased population density, 

 276 



house mice, 299 



population, 1S9 

 Guinea pig 



harderian glands, 240 



hydrocortisone, 236 



medullary hypertrophy, 227 



pituitary-adrenocortical activity, 273 

 Guinea pig 



pneumococcal infection, 256 



streptococcal infection, 256 



thyroid activity, 236 



tuberculosis infections, 256 



Habitat, 42 



marginal, 45 



one-dimensional, 8 



unstructured one-dimensional, 9 



unsuitabilitj', SO 

 Hamster, 196 



golden, 194 



poliomj-elitis, 256 



sudanophilia, 248 

 Hare (see also Lepus), 319, 323 



mortality, 322 



population density and parasitism, 322 



relationships between population den- 

 sity and reproduction, 310 

 Harvest mice, 6 

 Hematopoiesis, 251 

 Hibernating gland, 194 

 Hierarchical situation, 263 



Hierarchy formation 



reductions in velocity of, 153 

 Histamine, 216 

 Homeostasis 

 circulator}', 192 

 electrolyte, 202, 205 

 fluid, 202, 205 

 Home range, 20, 25, 36, 38, 42, 164 



behavioral origins of the bivariate 



normal, 8 

 bivarate normal, 4 

 center, 4, 23, 39, 42, 43, 47, 57, 58, 72 



actual, 64 



"ideal" interval between, 45 



optimum interval, 51 



uniform distribution, 59 

 clumping, 67 

 contracted, 54 

 enlargement, 76 

 expansion, 68, 79 

 fixed, 77 



inhibition, 53, 78, 80 

 intraspecific differences in size of, 75 

 mutual inhibition of, 79 

 overlapping, 67 

 periphery, 51 

 reduction, 70 

 relative, 165 



relative, of constellation members, 166 

 schematic 



for Blarina, 65 



for Peromycus, 65 



for Pitymys, 66 

 sigma, 5, 6 

 size, 53 



social inhibition, 70 

 travel-path, 24 

 Homo sapiens, 57 

 Hormone 



antidiuretic, 241 

 anti-inflammatory, 208 

 fascicular action, 208 

 regulation of secretion of the fascicular, 

 213 

 Host resistance 

 decrease, 210 

 effect of crowding, 279 

 infectious disease, 279 

 parasites, 279 



