INDEX 



269 



Gills, of vertebrates, 51 



Glands, responses of, 112-13 



Goal, of evolution, 234-49 



Gold, T., 20 



Golden Rule, of Confucius, 105-6 



Gorilla, family life of, 92, 220-21 



Gramow, George, 17 



Great Britain, declining I.Q. in, 



209, 211-13, 245 

 Grouping, advantages of, 76-77 

 Grubs, in beehive, 151 



Haldane, J. B. S., 26, 30, 40, 85, 



119 

 Halictus, 148 



Ha?idbook of Experimental Psy- 

 chology, 122, 124 

 Hands 



adaptive, of man, 240 



development of, 52 



freed, beginning of man's suc- 

 cess, 57-60 

 Harlow, H. F., 160-64 

 Heat death, 18-19 

 Heidelburg man, 62 

 Hellenic overpopulation, 193-94 

 Hens, society in "peck order," 78 

 Heredity, 42 



chromosome, basis of, 36 

 Herron, W. T., 158 

 Hindbrain, 129 

 Hindus, religion of, 12 

 Hip bones, significance of, 58-60 

 Hiroshima, 62 

 Hive bee, 149; see also Bees 

 Homeostasis, 231-32 

 Homo ferus, 172 

 Homo neanderthalensis, 62-63 

 Homo sapiens, 5; see also Man 

 Honeybees, social order of, 80-81 

 Honeypots, 145-46 

 Hooten, E., 58 

 Horowitz, N. H., 32-33 

 Hottentots, 100-1 

 Hoyle,Fred, 19-21 

 Hrdlicka, A., 240 

 Hubble, Edwin, 16-17 



Human Fertility, The Modern Di- 



lejmna, 197, 214 

 Humanism 



of Jesus, 106-7 



scientific, 230-32 

 Huxley, Julian, 83, 176,225 

 Huxley, T. H., 222-23 

 Hydrocarbons, 26 

 Hygiene, influence on population, 



198-200 

 Hymenoptera, 79, 127 



Ice ages molds man, 89-90 



Ido, 187 



Implements, development of, 97-98 



Incest, taboos against, 92-93 



India, 216 



overpopulation in, 196, 201 

 Individuals 



creative, 87-88 



importance of, 83-84, 86-88 

 Industrial civilization, future fail- 

 ure of, 243-44 

 Industrial Revolution, 66, 225 

 Inheritance, of acquired social 



characters, 67-68 

 Insects 



instincts of, 139-41 



swarms of, 75 

 Instinct, 136-57 



absolute control of 

 man's freedom from, 85-86, 

 219 



ants, 136 



bees, 136 



desirable, 143 



undesirable, 142 

 Intelligence 



declining, 203-14, 245 



high-level, 215-17 



plasticity of, 219 

 Intelligence quotient, (I.Q.), 206- 



12 

 Interlingua, 187-88 

 Interthinking groups, 69 



average declining in U. S., 209-10 



declining levels, 245 



