――, simplicity of, in England, 228 NATIONAL feeling in war, 216–218 ――, growth and common impulse, 245, 246 NATIONAL industry and private enterprise, 257 NATIONAL types contrasted, 232 NON-RATIONAL OPINION, frequency of, 35, 36, 93, 94 “NORMAL” type of mind, 53, 54 NUEL and comparative psychology, 14 PACIFISM, 125 PEARSON, KARL, biological significance of gregariousness, 23, 24 ――, possibility of sociology as a science, 12 PERSONALITY, elements in the evolution of, 87 PREJUDICE, precautions against, 220–222 PRIMITIVE MAN, rigidity of mental life, 34 PSYCHO-ANALYSIS, characteristics of, 70, 71 PSYCHOLOGICAL ENQUIRY, biological method, 91, 92 ――, primitive introspective method, 68, 69 ――, objective introspective method of Freud, 70 PSYCHOLOGY of instinctive man, failure of earlier speculations, 16 RATIONALIZATION, 38 RATIONAL statecraft, need of, 241, 251 ――, basis of, 252, 253 RECOGNITION, 118, 119 RELIGION and the social animal, 50, 51 SEGREGATION of society, effects of, 215 SENSITIVENESS to feeling, importance and danger of, 64 SIDIS, BORIS, and the social instinct in man, 26, 27 SOCIAL EVOLUTION, in insects, relation to brain-power, 62 ――, in man, delayed by capacity for reaction, 62 SOCIAL PSYCHOLOGY, continuous with individual psychology, 12 SOCIAL stability, an effect of war, 235, 236 SOCIAL instability, a sequel of war, 236, 237 SOCIOLOGY, definition of, 11 ――, psychological principles of, 255 SOLITARY AND GREGARIOUS ANIMALS, elementary differences, 17 SOMBART, WERNER, Germans the representatives of God, 177 SPEECH in man, and gregariousness, 34, 40 SPENCER, 24 STABLE-MINDED type, 54, 55 SUGGESTION and reason not necessarily opposed, 45 UEXKÜLL and comparative psychology, 14 UNSTABLE-MINDED type, 58, 59 VARIED REACTION and capacity for communication, importance to the herd of, 61 WAR, instinctive reactions to, 140–143 ―― and rumour, 144 ―― as a biological necessity, 126–132 WARD, LESTER, views on gregariousness in man, 24, 25 WELLS, H. G., impossibility of sociology as a science, 12 WOLF PACK, the, as an organism, 29 _Printed in Great Britain by_ UNWIN BROTHERS, LIMITED, THE GRESHAM PRESS, WOKING AND LONDON TRANSCRIBER’S NOTE Original spelling and grammar have been generally retained, with some exceptions noted below. Original printed page numbers are shown like this: {52}. Original small caps are now uppercase. Italics look _like this_. Footnotes have been relabeled A–W, and moved from within paragraphs to nearby locations between paragraphs. A few full stops and commas were added where they were required but were not clearly visible in the original print. The transcriber produced the cover image and hereby assigns it to the public domain. Original page images are available from archive.org—search for "instinctsofherdi00trot". Page 239. The phrase “but it is must be remembered” was changed to “but it must be remembered”.