Sec. 5. Sex problems and the need of special knowledge. Sec. 6.
First problem: Personal sex-hygiene. Sec. 7. Second problem:
Social diseases. Sec. 8. Third problem: Social evil. Sec. 9.
Fourth problem: Illegitimacy. Sec. 10. Fifth problem: Sexual
morality. Sec. 11. Sixth problem: Sexual vulgarity. Sec. 12.
Seventh problem: Marriage. Sec. 13. Eighth Problem: Eugenics.
Sec. 14. Summary.