Löwenfeld, 1, note 1 Lydston, F., 7 Magnan's classification, 4 Man (see Bisexuality, Masculine and Feminine) sexual development of, more consistent and easier to understand, 68 differentiation between, and woman, 78 Masculine and feminine, 79 as activity and passivity, 79, note 4 biological significance of, permits clearest determination, 79 note 4 in sociological sense, 79, note 4 no pure, in either biological or sociological sense, 79, note 4 Masochism, in relation between hypnotized and hypnotist, 15, note 14 and Sadism, 21 originates through transformation from Sadism, 22 and Sadism occupy special place among perversions, 23 reinforced by Sadism in exhibitionism, 30 source of, in painful irritation of gluteal region, 55 -Sadism impulse rooted in erogenous action of pain, 65 Mastery, impulse to, foreshadowed in boys' masturbation, 50 source of cruelty in children, 54 supplies activity, 59 Masturbatic sexual manifestations, 47 excitation of anal zone, 49 irritation of anal zone, 49 sexual manifestations have same male character in boy and girl, 79 Masturbation frequently the exclusive aim in inversion, 12 in small children, 36 thumb-sucking and, 43 infantile, has three phases, 50 return of, 51 in little girls concerns clitoris only, 80 Mechanical excitation, 62 Memory traces preponderate over recent impressions in causation of neuroses, 99 Moebius, 1, note 1; 4, note 6; 34 Moll, 1, note 1; 32; 37, note 1 Morality as a psychic dam, 41 Mother, fixation on, in inverts, 11, note 12 image helps males avert inversions, 88 image helps females avert inversions, 88 Motion, pleasure of, sexual in nature, 64, note 22 Mouth (see Lip, Oral) Sexual Utilization of Mucous Membrane of Lips and, 16 as a frequent example of transgression, 29 as an erogenous zone, 31 Muscular activity, pleasure from, 63 Narcissism in object selection, 10, note 11 as identification with mother, 12, note 12 Narcissistic Libido a name for Ego-Libido, 78 a reservoir of energy for investment of object, 78 investment of ego a realized primitive state, 78 Nausea on railroads, 63 Neurosis and perversion, 28 the negative of a perversion, 29; 89 intestinal catarrh in, 48 symptomatology of, traced to disturbance of sexual processes, 67 a factor in the causation of, is preponderance of memory traces, 99 Neurotics and children compared, 38 infantile reminiscences in, 40 scatologic customs of, 49 diseases, disposition for, awakened by over tender parents, 83 have nearer ways than tenderness to transfer their disturbances to their children, 38 fixedness of impressions of sexual life in, 99 Nursing Period, Sexual Object of, 82