neglect of the, 36
  object selection, after effects of, 86
  onanism almost universal, 50
  relations to parents, produces serious results to sexual life, 87
      cause of jealousy of lover, 87
    wet nurse, 82
  reminiscences in neurotics, 40
  sexual activity, 50
    aim, 45; 46
    excitement generously provided for, 65
    impulse same as adult fore-pleasure, 72
    investigation, failure of, 57
  sexuality, 36
    manifestations of, 42
    determines normal, 73
    source of, 61
  sexual life, 53

Influences, opposite, paths of, 66

Inhibitions (see Shame, Loathing, Sympathy) 26, note 23
  sexual, 40
    develop earlier in girl, 78
  study of, 58

Innateness, 5

Inner organic world, one of three stimulants of sexual apparatus, 69

Inquisitiveness, 55
  of children attracted to sexual problems, 56

Intentions, Appearance of New, 20

Intellectual work, 65

Intensity of stimulus, a factor in sexual excitement, 65

Intestinal catarrh in neurosis, 48

Inversion, amphigenous, 2
  influence of climate and race on, 5
  conception of, 4
  congeniality of, 4
  corresponds to sexual inclinations of many persons, 88
  effect of father on, 11, note 11
  explanation of, 6; 10, note 11
  extreme cases of, 3
  feelings of, in all neurotics, 29
  frequent in ancient times, 5
  permanent, made possible by a disappearance of one parent, 88
  prevention of, 87
  time of, 3

Inverts, behavior of, 2; 3
  psychic manliness in, 8
  sexual object of, 10
  aim of, 12

Investigation, infantile sexual, 55
  conducted alone, 58
  is first step at independent orientation, 58
  causes estrangement from persons, 58

Itching, feeling of, projected into peripheral erogenous zone, 47

Kiernan, 7

Kinderfehler, Die (periodical), 37, note 2

Kissing (see Mouth, Oral)
  as perversion, 15
  habitual, in former thumbsuckers, 44
  in female inverts, 12

Knowledge, desire for, cooeperates with energy of desire for looking, 56
  not wholly sexual, 55
  relations to sexual life of particular importance to, 56

Krafft-Ebing, 1, note 1; 9, and note 11; 22; 23
  weakness of his description of sexual process, 75

Latency Period, Sexual in Childhood, 39; 40 interruptions of, 41

Leading Zone in man and woman, 80
  in female child is the clitoris, 80

Libido as term for sexual feeling corresponding to hunger, 1
  of inverts, 3
  direction of, determined by experience in early childhood, 6
  attachment of, to persons of same sex, 10, note 11
  fixation of, on hypnotizer, 15, note 14