There is no doubt that public enlightenment regarding the dangers of social diseases will soon lead to legislation and public medical work which will contribute greatly towards reduction of the diseases. For example, legislation with reference to venereal disease should require doctors to report cases to health officers, should forbid "quack" advertising of fake "cures," should forbid sale by drug stores of nostrums for personal treatment, should provide dispensaries and hospitals for reliable treatment at reasonable cost, should require medical examinations for marriage licenses and provide for such examinations at moderate charges or at public expense, should require certain sanitary precautions in care of eyes of new-born infants, and should provide for discovery and treatment of congenital syphilis in school children. These are lines in which good laws might help vastly in the war against the social diseases. Moreover, it is obvious that all laws which help control the social evil will work indirectly against the social diseases. [Sidenote: Probable results of instruction.] In conclusion, it seems probable that popular knowledge of the social side of sex-hygiene will reduce the amount of venereal disease (1) by teaching some people the dangers of promiscuity, (2) by adoption of certain sanitary precautions that lessen danger of infection, (3) by leading people to seek competent medical aid which, while often failing to restore the victim's health, will probably eliminate the danger of contagion for others, and (4) by intelligent support of laws that directly or indirectly affect the social diseases. [Sidenote: Social diseases not most important.] I have given great prominence to the social-sexual diseases in their relation to sex-education because along this line there has been developed the widespread interest in sex-instruction as _one_ method of protecting young people against promiscuity. So far as the questions of teaching are concerned, my personal view is that some of the other reasons or problems for sex-instruction are more important, because I believe that educational emphasis on them will give the greatest results in improved sexual conditions of society. Sec. 8. _Third Problem for Sex-instruction: the Social Evil_ So far as the problems of sex-education are concerned, there is nothing to be gained by an extensive review of commercialized prostitution. It is generally accepted that the social evil or prostitution is increased by the common ignorance of young people of both sexes regarding the physical and social relations of sex.