Hypnosis, 10-13, 20-1, 77-9, 81, 95-100, 125-6. a group of two, 78, 100. and sleep, 79, 98. of terror, 79. Hypnotist, 13, 77, 95-9. Hysteria, Identification in, 63-5. Idealisation, 74. Identification, 59-70, 75-6, 84, 86-9, 94, 101-3, 111, 125. Ambivalent, 61. in hysterical symptom, 63-5. Regression of object-choice to, 64. with a lost or rejected object, 67-8, 108-9. with Christ, 111. with the father, 60-2. with the hero, 115. with the leader, 110-11. Imitation, 34-5, 65, 70. Individual: a member of many groups, 101. Dread in, 47-8. Mental change in a group, 6-14, 33-4, 45, 56, 81, 102. Psychology, 1-2, 92-3, 112, 114. Induction of Emotion, 27, 34, 46-7. Infection, mental, 64-65. Inferiority, Delusions of, 57, 106-7. Inheritance, archaic, 10, 99. Inhibition: Collective, of intellectual functioning, 23, 33. Removal of, 17, 28, 33. Instinct: Herd, 3, 83-6, 105, 121. inhibited in aim, 72-3, 78, 115-26. Life and death, 56. Love, 37, 39, 58. Nutrition, 85. Primary, 84-5. Self-preservative, 34, 85. Sexual, 19, 39, 56, 71-8, 85-5, 94, 115-26. Social, 3. unhibited in aim, 73, 77-8, 94, 115-26. Unconscious, 10. Intellectual ability, lowering of, in groups, 14, 18, 23, 25, 29, 31, 33, 81. Introjection, of object into ego, 65, 67-8, 76. Jealousy, 121. Kings, Mana in, 96. _Kraškovič, B. Jnr._, 23. _Kroeger_, 90. Language, 25, 38, 71. Latency, period of, 72, 117, 120, 126. Leader, 20-2, 41, 44-5, 78, 82, 85, 89, 92, 99, 110. Abstractions as substitutes for, 53. Equal love of, 93, 95. Identification with, 110-11. Killing the, 90. Loss of, 49. Negative, 53. Prestige of, 21-2. the group ideal, 100, 102, 110. Tie with, 49, 52, 66. _Le Bon_, 5-25, 29, 34, 82, 84, 100-1. Libidinal: structure of the group, 37, 40, 44-5, 47, 53, 70, 79-80, 102-3. The word, 44. ties, 44, 56-8, 65, 93, 100. in the group, 45, 51, 54. Libido, 33-40, 44, 57, 79, 83, 102, 111, 116, 119, 123, 126. Narcissistic, 58, 74, 93, 104, 125. Oral phase of, 61. theory, 57, 83, 125. Unification of, 19. Withdrawal of, 108. Love, 37-40, 42, 73, 87, 108, 122. a factor of civilisation, 57, 93. and character formation, 94, 118-20. and hatred, 56. Being in, 58, 71-9, 120-1, 124-6. Child's, 116-17. Christ's, 43. Equal, 42, 50, 89, 93. Pauline, 118. Self-. _See under_ Narcissism. Sensual, 71-3, 78, 117. Sexual, 37-8, 57, 120-2. Sublimated homosexual, 57. The word, 37-9, 71. Unhappy, 75. Unsensual, 73. _McDougall_, 1, 26-31, 34-6, 46-7, 49, 84. Magical power of words, 19. Magnetic influence, 11. Magnetism, animal, 96. Mana, 96. Mania, 106-9. _Marcuszewicz_, 68. Marriage, 54, 120. Melancholia, 68, 106-9. Metapsychology, 63, 118. _Moede, Walter_, 24. _Molière_, 119. Morality, Totemism the origin of, 90. Mother deities, 113, 115. Multicellularity, 7, 32, 83. Myth, 113-15. _Nachmansohn_, 39. Names, Taboo upon, 19. _Napoleon_, 44.