220, 221, 310-311
and the sexual impulse, 160, 161
unsuitable for children, 161

Alcoholism, 220

Alienists and the study of sexual life, 147

Alopecia areata, 47

Altruism and love, 208

Amatory passion and suicide, 188, 189

Anaesthesia sexualis, 87, 92

Animal friendships, 139, 140

Animals, sexual fondness for, 61, 66. _See also_ Bestiality
sexual paradoxy in, 123
sexual phenomena in young, 99-103

Anthropology, works on, 8, 9

Anus, 91

Anxiety causing ejaculation, 92-94
in the masturbator, 184

Anxiety-neurosis, 14, 93, 190

Aprosexia, 207

Art and sexuality, 213-215
the nude in, 258-260

Assaults, sexual. _See_ Sexual assaults

Association of contrectation and detumescence, 81-87
theory of sexual perversions, 130-133

Autobiographies, 10-12, 15

Auto-erotism, 166, 188. _See also_ Masturbation _and_ Onanism

Auto-Suggestion, 190

BALANITIS, 118

Balls, children's, 268, 269

Bars, parallel and horizontal, and sexual stimulation, 159

Bartholin's glands, 23, 25
secretion of, 25, 56

Bathing, mixed, 255

Beard, a secondary sexual character, 34, 38

Beauty and the sexual impulse, 70

Bed, 307

Beggars, 199

Belletristic literature, love in, 12

Bestiality, 61, 66

Bible, the, 273, 274

Bicycling. _See_ Cycling

Biographies, 10-12

Blackmail, 227

Bladder, distension of, causing erection, 50

Blindness, 283

Boarding-schools, 200, 247

Books and pictures erotic, 260-264

Boot, masturbation with, 164

Boys frequenting brothels, 154

Braggadocio, 174

Breasts, sexual differences in, 34, 36

Breathing, sexual differences in, 37

Breeches and sexual stimulation, 159, 307, 308

Brothels, boys frequenting, 155

Brother and sister, rarity of sexual desire between, 71
improper sexual acts between, 71, 199, 200
elder, effects sexual enlightenment, 297

Bulb, vaginal, or bulb of the vestibule, 23

CABBAGE-PATCH, babies in, 170, 285

Calf-love, 70

Cancer, 180

Caressive inclinations and sexuality, 163, 164, 175

Carunculae myrtiformes, 28

Cases:--
1. Undifferentiated sexual impulse, 64
2. Undifferentiated sexual impulse, 66
3. Undifferentiated sexual impulse, 67
4. Coitus in childhood, 82
5. Development of sexual impulse, 84
6. Anxiety causing ejaculation, 93
7. Sexual