Maria Theresia, 357 Marriage—age suitable for, 348; chastity in, 350; chlorosis cured by, 362; communal, 386; consanguineous, 127; conventional, 100; cure by, 179; evolution of, 141; exogamous, 386; history of, 385; love in, 347; monogamic, 407; prostitution in, 135; sensuality in, 347; shyness in, 348; unfits to, 340; woman and, 144 Marro, 15, 155 Maschka, 312 Masochism, 253; imagery in, 255 Marquis de Sade, 259 Masturbation—in animals, 238; bets in, 239; causes of, 167, 240, 249; in children, 164; exaggerated effects of, 238; harm of, 324; hereditary taint, 166, 168; ignorance in, 250; impotence by, male, 170; female, 183; in Lesbian women, 242; mishaps during, 243, 239; Milesian women, 242; moderate, 238, 241, 246; prevention of, 322, 324; in schools, 239; sequels of, 324, 241, 248; spanking and, 130; symptoms of, 199, 323, 362; syncope in girls, 241; urination in, 241; withdrawal cause of, 362; in women, 242, 247 Masturbator, character of, 171, 172 Matchmaking, 244 Materialism, goal of, 371 Materialists, altruistic, 371 Maternal traits, 137 Mating, permanent, 127, 129 Matriarchate, 386, 387 Maturition, 63, 83; of sperm cell, 70 Meaning of life, 383 Means—of sex-excitement, 364; against acquired masturbation, 323 Mechanistic theory, 13, 273 Medical students, 315, 316 Mendel’s laws, 64, 338 Meningitis—gonorrhoica, 395; syphilitica, 398 Menstruation, 84; in animals, 86; breasts in, 320; intercourse in, 354; lymphatic, 87; male, 203; Mosaic law on, 355; odor at, 98; voluptas during, 232 Mental defectives, 327; secondary characteristics of, 137 Mental erethism, ejaculation in, 173 Meretricious venery, dissatisfaction in, 155 Metallic basis of civilization, 373 Metals, discovery of, 385 Metaphysical riddles, 376 Metazoa, 112 Meyer, 85 Micturition, 177, 197; after ejaculation, 82 Mind and matter, 152 Ministry and sex, 396 Mitosis, 61, 70 Mixoscopy, 223, 226 Modern stage, 365 Modesty, 145, 391; in children, 106; extreme, in erection, 80; in perverts, 287 Mohammed, 351 Moll, 94, 165, 237, 248, 263, 290, 311 Mollusca, 19 Monads, 114 Monera, 17 Monin, 98 Monoecious plants, 117 Monogamy, 388, 392; in animals, 126; biological, 148; female, 141, 148 Mooren, 352 Moraglia, 202, 268 Moral—equilibrium, 345; imperative, 377; imperative in gonorrhoea, 395; sense, 369; standard in nature, 379 Morality, 367; altruism in, 384; binding of, 405; criterion of, 368; custom and, 367, 368; definition of, 326, 232, 369; of fear, 226; of love, 375; radicals and, 369; religion and, 369; new sex, 147; of work, 374 Morgan, 385