ements, 172, 173

"Rural innocence," the table of, 152-156

SADISM, 61, 74, 124, 130-133, 136, 137, 140, 160, 210, 234-245, 316,
317, 321

Sadistic advertisements, 240-245

Satisfaction, sexual, the sense of, 23, 31, 32
in children, 59

_Schlafbursch_, 220. _See_ also Night-lodger

School, the, as a field for the sexual enlightenment, 282
_versus_ home for the sexual enlightenment, 291-297

School-doctor, the, and the sexual enlightenment, 293, 294

Schools, masturbation in, 155

_Schutzalter._ _See_ Age of consent

Scrotum, 18

Season and the sexual impulse, 151

Secrecy surrounding the sexual life, 300

"Secret diseases," 180

Secretion, internal. _See_ Internal secretion
prostatic, 20
testicular, 19

Secretiveness of children regarding their sexual life, 163, 168, 169

Seduction a cause of masturbation, 52
in childhood, 157, 158, 161, 162, 180, 190, 196, 198, 199, 200,
221, 280

Segregation of the sexes, 247

Self-abuse. _See_ Masturbation

Self-reproach, moral, in masturbators, 282, 284

Semen, 20, 55, 56, 104
constituents of, 55, 56
definition, 20

Seminal duct, common, 18
vesicles, 18
glands of, 20
their distension causes erection, 21

Seminiferous tubules, 17, 19

Senile dementia, 220

Sensation, voluptuous. _See_ Voluptuousness

"Severe education," 241-243

Sewing-machine, 90

Sexes, coeducation of, 264-270
segregation of, 247

Sexual abstinence from tardy sexual development, 216-218
is it harmful? 303

Sexual act, enlightenment concerning, 281

Sexual differentiation in, 184

Sexual acts in children, 82, 188, 198, 199, 200, 265, 269

Sexual acts witnessed by children, 161, 162, 212, 247, 248

Sexual anaesthesia, 87, 92

Sexual assaults, false accusations by children, 227-229

Sexual characters, primary. _See_ Sexual organs
secondary, 33-49
effect of contrectation on, 103-109
tertiary, 33, 34

Sexual contrasts, 177

Sexual desire, 59 _n._

Sexual development, _See also_ Puberal development
precocious, 114-116, 167, 168
in boys, 115, 116
in girls, 114, 115
retarded, 112, 113, 116, 117, 168, 216-218

Sexual differences, are they congenital or acquired? 41-45

Sexual differentiation in childhood, 33-49, 78, 79, 148, 149

Sexual dreams, 81, 94-98, 113, 178, 190
alarm at th