| [Chapter I.] |
| REPRODUCTION FROM THE STANDPOINT OF BIOLOGY. |
| 1. General Activities of Living Organisms | [11] |
| A. The Egoistic Activities | [12] |
| B. The Phyletic Activities | [13] |
| a. Reproduction | [13] |
| b. Support and Protection of Offspring | [13] |
| c. Support and Protection of Weaker Members of Society | [15] |
| 2. Some General Principles of Biology | [15] |
| A. Sacrifice and Compensation in Egoistic Activities | [15] |
| B. Sacrifice and Compensation in the Phyletic Activities | [16] |
| a. Lower Organisms | [16] |
| b. Higher Organisms | [19] |
| C. Summary of Principles | [24] |
| a. The propagation of offspring and the protection and support of the young and defenseless, always involve sacrifice on the part of the parents and the stronger members of the race | [24] |
| b. Sacrifice made consciously for the race is, in the natural order of things, compensated | [24] |
| [Chapter II.] |
| ADOLESCENCE IN THE MALE. |
| 1. Physical Changes | [28] |
| A. General Changes in the Body | [28] |
| a. Pilosity | [28] |
| b. The Voice | [29] |
| c. Bone, Muscle and Gland | [30] |
| B. The Genital System | [32] |
| a. Structural Changes | [32] |
| b. Functional Changes | [32] |
| 2. Psychical Changes | [33] |
| A. Play and Work | [33] |
| a. Sports | [33] |
| b. Productive Employment | [34] |
| B. Society | [35] |
| C. Religion | [36] |
| [Chapter III.] |
| ANATOMY AND PHYSIOLOGY OF THE MALE GENITAL ORGANS. |
| 1. Anatomy | [39] |
| a. The Penis | [39] |
| b. The Testes | [41] |
| c. The Spermatozoon | [44] |
| d. The Epididymis | [44] |
| e. The Seminal Vesicles | [45] |
| f. The Prostate Gland | [45] |
| 2. Physiology | [46] |
| a. Urethra | [46] |
| b. Cowper's Glands | [46] |
| c. The Prostate Gland | [48] |
| d. The Seminal Vesicles | [48] |
| e. Testes | [55] |
| 3. Virility | [60] |
| [Chapter IV.] |
| SEXUAL HYGIENE OF THE ADOLESCENT MALE. |
| 1. Illicit Intercourse with Women | [74] |
| a. Chancroid or Soft Chancre | [78] |
| b. Gonorrhea | [79] |
| c. Syphilis | [80] |
| 2. Masturbation | [84] |
| 3. Continence | [90] |
| [Chapter V.] |
| HYGIENE. |
| 1. Diet | [95] |
| a. Choice of Food | [95] |
| b. Stimulants and Narcotics | [97] |
| c. The Dietetic Control of the Bowels | [104] |
| d. The Dietetic Control of Sleep | [110] |
| e. The Dietetic Control of the Kidneys and Skin | [111] |
| f. The Dietetic Method of Curing a Cold | [111] |
| 2. Baths | [112] |
| a. The Bath for Cleanliness | [112] |
| b. The Tonic Bath | [114] |
| 3. Exercise | [115] |
| 4. The Hygienic Requirements of Sleep | [118] |
| 5. The Control of the Thoughts | [120] |
| [Chapter VI.] |
| DEVELOPMENT. |
| 1. The Child | [125] |
| 2. Maternity | [128] |
| 3. Paternity | [130] |
| [APPENDIX.] |
| Answers to questions | [135-149] |