Protozoa, 17, 112, 114 Prudery—subconsciousness of, 9; in sex instruction, 9 Pseudomasturbation, 166 Psychic impotence, 194 Psychic trauma, 197 Psychical hermaphrodites, 289, 290 Psychology of sex, 102 Puberty, 106; characteristics of, 56; emotions of, 108, 147; symptoms of, 320; homosexual perverts at, 286 Puerperium, gonococci in, 394 Punaluan family, 127, 386 Punishment of adultery, 367, 368 Purity, harmless, 401 Purpose of life, 372, 378 Quadrupeds, 86 Qualities, physical, 152 Quality of libido, 92 Rabbis, 371 Race, duties towards, 408; nature, 382 Race-culturists, 341 Rachford, 165 Racial evolution, 368, 405 Radicals, sex morality of, 369 Rape, 99; conception in, 360; by feeble-minded, 343; punishment of, 368 Rationality—in love, 140; in nature, 380 Reality, transcendental, 381 Reason for double standard, 400; for existence, 383; for male chastity, 392 Recessive determiners, 64 Regimen at menstruation, 176 Relative impotence, 195 Religion, 276; of antiquity, 2; authority of, 326; mania of, 228; morality and, 369; of personality, 375; of sensuality, 376 Renunciation in love, 133 Repression of sexuality, 174, 376 Reproduction—instinct of, 112; fissiparous, 60; gemmiparous, 17 Reptiles, 19 Respiration—costal, 58, 59; in libido, 93 Retention of urine, 317 Reti, 236 Retributory justice, 371 Reuardin, 229 Ribbing, 354 Rite, religious, 391 Rival in jealousy, 157, 159 Roe, 332 Rohleder, 87, 164 Roman—baths, 314; law, 364 Romantic love, 129, 136, 100 Rosenkranz, 130 Rosse, 212, 236, 284, 285 Roubaud, 97, 99, 213, 362 Roundworms, 115 Rousseau, 130, 132, 168 Rut, 107, 125, 126 Sacher-Masoch, 253 Sadism, in animals, 263; castration in, 259, 260, 262 Samaël, 246 Samson, 138 Sanval, 279 Sappho, 278 Sarcod, 114 Satyriasis, 174, 229, 231 Savagery, period of, 385 Schiller, F. v., 256 Schiller, Prof., 238 Schopenhauer, 10, 132, 263 Schrenk-Notzing, 235, 245, 253, 391 Season for offspring, 359 Secondary characteristics, 84, 108; mental, 137 Secretion, prostatic, 72 Segregation, 343; Mendel’s law of, 64 Self-assertion, 149, 376 Self-control, 400, 406 Self-sacrifice, 384 Semen, 73, 76 Senn, 239 Senses—in sex, 77; in libido, 96 Sensibility of plants, 380 Sensual love, 129, 130; egoism of, 133; eugenic power of, 135; fastidiousness of, 130 Sensuality, 148; intoxication of, 375; in marriage, 347; religion of, 376 Sentimental love, 129, 136; altruism in, 136 Sepals, 116 Septuaginta, 279 Sequels—of orgas. retard., 221; of masturbation, 324 Sergi, 130 Sérieux, 245 Sermon on the Mount, 111 Sertoli’s cells, 69 Servants in masturbation, 168, 317 Service in war, 383