Educational phases of the social emergency, 21-23, 84-103; aims of sex education, 84-86; bodily regimen, 87, 88; mental control, 88, 89; first principle of instruction in reproduction, 89-92; nature study, botany, etc., 92, 93; pre-pubescent and pubescent instruction, 93-102; difference between man and animals the basis of instruction, 105, 106; first instruction, 106; a true philosophy must lie back of instruction, 106, 107; bibliography, 208, 209. Ehrlich, his cure for syphilis, 38, 39. Eight-hour day, 67. Employment bureaus, 64. Excursions, 76. Exner, Dr. M.J., statement of, regarding sexual continence, 29, 30 _n._ Family, not competent to instruct in sex relations, 3. Federal Government, report on women's wages, 55, 56. Federal report (Woman and Child Wage-Earners), 59. Festivals, 76, 77. Freud, his view of sex basis, 86. Girls, pre-pubescent and pubescent instruction to be given to, 96-98; teaching phases for, 154-67; stability of nervous system, 154-58; menstruation and menstrual pain, 159-61; clothing of, 161, 162; in industry, 162, 163; housing of unmarried, 163, 164; instruction to be given on reproduction, 164-67. Girls' high schools, 161. Gonorrhea and the gonorrhea microbe, 33-39, 100, 146, 199. Hall, G. Stanley, his view of sex basis, 86. Holabird, William, 135. Home, the, as recreation and social center, 78, 79. Hotels, employment of girls in, 63. Housing of unmarried girls, 163, 164. Howell, Dr. William H., quoted on the sexual appetite, 31. Hygiene. _See_ Social emergency, Reproduction. Ice-cream parlors, 19. Ideals of sex education, 199-201. Illinois State Senate, vice investigation made by, 61. Immorality and wages, 16, 17, 50-62. Industrial education for women, lack of, 48. Industrial efficiency, connected with social hygiene problems, 3, 18. Industrial stress, its bearing upon sexual hygiene and morals, 62-64. Infection. _See_ Venereal infection. Instruction in sex hygiene and the physiology of reproduction, what, when, and by whom to be given, 3, 10, 25, 42-44, 90-102, 106, 110-122, 142-49, 179-89, 191; mistakes in, serious, 9; list of subjects to be considered, 148, 149; conditions to be observed in giving, 149-52; for girls, 164-67. _See_ Education, Educational phases, Teaching phases. Instructors in sex relations, lack of competent, 3, 10, 11, 192. Insurance, recommended, 67. Intoxicating liquors and commercialized prostitution, 17. Investigations into immorality and diseases, 196. Kelley, Florence, quoted on department stores, 63. Kingsley, Charles, quoted, 141. Lectures, 7, 78, 192, 193. Legislation and prostitution, 20, 21. Living wage. _See_ Wages. Love, as controller of passion, 174-78. Marriage, age of, and age of sexual maturity, discrepancy between, 13, 27, 28. Marriage laws, object of, 27. Massachusetts Commission on Minimum Wage Boards, report of, 54-57. Masturbation, 130-32, 145, 198.