2 74 



INDEX 



Sexual urges, among primates, 91 

 Sherrington, Sir Charles, 117 

 Shull, F. A., 38, 83-84 

 Sign language, of Indians, 168 

 Simpson, G. G., 67, 69, 176, 225-26, 



229-30 

 Sinanthropus, 62, 89 

 Sinnott, E. W., 67, 117-19, 225 

 Sitter, W. de, 16-17 

 Size, increase in, 177-79 

 Slipher, V. M., 16-17 

 Slipper animalcule, 115-16 

 Snails, 126-27 

 Soal, S. G., 247 

 Social amoebae, 72-73 

 Social characters, acquired in in- 

 heritance, 67-68 

 Social justice, among Bantus, 103 

 Social life, importance of, 70-84 

 Social man, product of long na- 

 tural process, 233 

 Social organization, necessity for, 



70 

 Social tendencies, of animals, 70-84 



Society 



balanced, of men, 249 

 with knowledge of universal 

 unity, 249 



Socrates, 247 



Southern ape, of Africa, 60-61 



Sparrow, English, 191 



Spawning, of palolo, 126 



Speech, origins of, 169 



Spencer, Herbert, 224-25 



Spengler, Oswald, 87 



Sperm, in plants, 47 



Sphex, 140 



Spinoza, Baruch de, 56, 118-19, 183, 

 234-35 



Sponges, semi-multicellular, 48 



Stanley, W.M., 31 



Starfish, 49-50, 123-24 



Stars, galaxies of, 12-22 

 travel to, 244 



Steinheim skulls, 62 



Stentor, 110 



Stimuli, patterns of, 174 



Subatomic particles, 11 

 Subconscious mind, 171 

 Sullivan, J. W.N., 119,236 

 Superindividual, 83, 116-11 , 232 

 Supreme Imagination, 183 

 Survival of fittest; see Natural se- 

 lection 

 Swanscombe skull, 62 

 Sweden, population stabilized, 



201-2 

 Synthesis 



from molecular levels to man, 22 



of organisms, 32 



T maze, for tests, 125-27 

 Taboos, in family life, 92-95 

 Taungs fossil, 59-61 

 Teas, H. J., 32 

 Telefinalism, 7 

 Teleology, 9, 175 

 Telepathy, 247 

 Terman, L. A4., 208 

 Termites, caste system of, 79-80 

 Thompson, Sir Godfrey, 212-13 

 Thought, conceptual, 158-75 

 Tigris-Euphrates, 97-98 

 Tolman, Richard, 19 

 Tooth-and-claw ethics, 222-27 

 Totalitarian ideology, 226 

 Toynbee, Arnold J., 87-88, 193-94, 



224-25 

 Transmission, of acquired social 



characters, 67-68 

 Travel, to the stars, 244 

 Trends, of evolution, 176-88 

 Trial and error, 7, 36, 115-16, 142, 



160-62 

 Tribal life, 94-95, 221 

 True-to-fact orientations, 184-86 

 Two-phase evolution, 69 



Unconscious control, 103-4 

 Understanding, higher levels of, 



215-17,228-30, 239-40 

 UNESCO, report on declining 



I.Q., 213 

 Unified field theory, 3, 11-12, 22 



