INDEX OF SUBJECTS. 



431 



Plato, his permanent types, 56. 



Politics, 19, 21, 26, 29, 345, 357, 359; 

 politicians and crowd psychology, 8; 

 study of , 173; all discriminations 

 to be abolished, 223; importance 

 of numbers, 267. 



Practice and theory, historical rela- 

 tion, 33, 169; what theory owes 

 to , 33. 



Prejudice, 155; s in average man, 

 26; only what appeals tends to be 

 recalled, 27; far-reaching effects of 

 psychical prejudices, 190-193. 



Probability, 26, 194; place in science 

 of , 19. 



Professional, the basic reconstruction 

 of activities, 202. 



Progress, methodology and historic 

 growth, 1-3; multiplication of 

 sciences, 7-9; historic affiliation 

 of the sciences, 30-31; a scientific 

 methodology indispensable for ra- 

 pid , 38; human first and 

 foremost cultural, 122, and pan- 

 humanly determined, 149; problem 

 of and culture discussed, 156- 

 157; Spencer's view of consider- 

 ed, 157-158; entails eventually 

 the virtual abolition of error, in- 

 equality, and discord, 158; rapid 



- in scientific enquiries dependent 

 on thoroughness, 185-189, and on 

 abundance of leading facts, 313; 



- greatly impeded by prejudices, 

 192-193; lack of co-operation highly 

 prejudicial to , 214; justification 

 of , 226-227; -- in method the 

 highest type of , 339-340; from 

 eolithic times, 345; reality of 

 illustrated, 350-351. 



Proof, 88; for the untrained, is a 

 matter of feelings, 91; definition 

 of , 115; a synthetic methodology 

 permits readily of , Mill's s, 

 only search for relative certainty 

 practicable as a rule, certain canons 

 of approximate , tests peculiar 

 to certain sciences, simple verifica- 

 tion, appeal to authority and educat- 

 ed thought and feeling, 115-116; 

 laws of nature highest , 116; 

 through working hypotheses, 

 116; degrees of to be sought, 117; 

 need of proving all conjectures, 

 363-365; modes of direct and in- 

 direct , 364-365. 



Protein, differs from species to spe- 

 cies, 84. 



Psycho-analysis, 158. 



Psychology, 19, 20, 30, 105, 128, 194, 

 346,355,362; compartment theory, 



sensations, definition of , 6; be- 

 ginning of - - as a science, 7; 

 psychological tests, and educa- 

 tion, of the crowd, 8; status of 

 the sense of touch, 23; vicissitudes 

 of because of absence of a me- 

 thodology, 29-30, 258-259; obscure 

 mental processes, telepathy, sub- 

 consciousness, Bergson's indeter- 

 minism, 61-64; nature of sound, 

 109-113; ignoring of scientific me- 

 thod in psychological research, 154; 

 semi-conscious thought in normal 

 life, 159; problem of the sensations, 

 231-232, 316, 337-338, 345; intro- 

 spection, 258-259; reaction times 

 in , 261; body's sensibility to 

 touch, 265; phrenology, senses, 274; 

 tripartite division, 275; nature of 

 emotions, 276-277; attention, 343, 

 345, 370; wakefulness and sleep, 

 344; binocular and monocular 

 vision, 359; types of men, 361; 

 nature of pain, 367-368; applied 

 to industry, 382. 



Pure and applied science, line be- 

 tween elusive, 7 ; over-emphasis 

 of either, 8. 



Quantitative determination, 80-81, 

 118, 269, 306, 314-346, B46, 352 ; 

 observation, 267-268 ; numerous 

 generalisations, 334. 



Race, 21, 242, 277, 341, 357, 358, 359 ; 

 mental capacity of white race and 

 other races respectively, 217-231 ; 

 all discrimination to be abolish- 

 ed, 223; friendship among s, 225- 

 226 ; polygenetic theory of s, 276 ; 

 alleged incapacity of African Negro 

 to civilise himself, 278. 



Radio-activity, 93, 107, 360-361. 



Railway gauge, adoption of a single 

 one, 157. 



Reading, general sources of informa- 

 tion, 198. 



Reality, a flux in great measure, 56 ; 

 as not consisting of featureless 

 forces, 86 ; conflict between science 

 and terminating, 170-172; thres- 

 hold of realistic age, 174. 



Reasoning process, nature of, 289. 



Regionalism, 341. 



Relativism (see Absolutism). Radium, 

 52, 58, 275, 337; action of emana- 

 tion on air, 261 ; paucity of , 267. 



Religion, 26, 29, 63, 64, 103, 109, 226, 

 328, 357, 358, 362; study of , 17:5; 

 historical classification of , 230; 

 nature of , 253-255. 



Resourcefulness, conditions favour- 

 ing, 271-272. 



