sipation, 478

Fecundation, 52

" in flowers, 53

" modes of, 55

" in fishes, 56

" in reptiles, 56

" in higher animals, 56

" in hermaphrodites, 59

Feeling apparatus, 425

Females, imperfect, 58

Female organs, 73

" organs of flowers, 48

Fetus, respiration of, 67

" influenced through the blood, 67

Fishes, development in, 60

" fecundation in, 56

Filthy dreams, 179

" talkers, 180

Flirtation, evils of, 143

" youthful, 144

" childish, 487

Flowers, polygamous, 47

" female organs of, 48

" fecundation in, 53

Fomentations, 405

Foods, stimulating, 392

Force, life, 29

Functions of life, 30

General debility, 365

Generation, laws of, 219

" physiological, 112

" spontaneous, 31

" ancient theory of, 32

Gestation, duration of, 66

Girlhood, 471

Girls, a chapter for, 470

" causes which lead astray, 484

" how ruined, 493

Gluttony, 292

Habit, power of, 496

Health essential to beauty, 474

Health hints, 88, 93

Heart disease, 367

Heredity, 102

" laws of, 243

" of disease, 109

" of crime, 107

Hermaphrodism, 36

Hermaphrodites, fecundation in, 59

Hip bath, 93

Human machine, the, 423

Human wrecks, 437

Human form, 474

Human buds, 476

Husbands, improvident, 170

Hybrids, 100

Hymen, 73

Hysteria, 95, 343

" causes of, 96, 375

Idiocy, 371

" cause of, 433

Idleness, 189

Ignorance, 300

Ill-health of girls, causes of, 472

Illustrative cases, 437

Imbecility, 371

Impotence, 363, 410

" not produced by continence, 207

Infanticide, 271

" among various nations, 273

Infant intoxication, 70

Infants, betrothal of, 138

Insanity, 370

" cause of, 447, 490

Instinct, lessons from, 220

" a safe guide, 224

Internal emissions, 361

Intestinal worms, 202

Juke family, the, 108

Labia, the, 73

Labor, 68

Lacing, 90

Law of heredity applied, 126

" of sex, 101

Legalized murder, 233

" vice, 309

Leucorrhoea, 346

Libidinous blood, 290

Licentious worship, 287

Licentiousness, results of, 302

Life, 25

" beginning of, 52

" force, 29

" origin of, 33

" modern modes of, 203

" when it b