Instruction in Coeducation.—A course of instruction as interesting as possible should be organized for each subject, without distinction of sex. This rule should also apply to things which are generally considered as the special province of women; such as sewing, dressmaking, cooking, household work, etc. It will then be the business of each sex to choose the subject most suited to its abilities.

Part of the course of instruction should be obligatory for all, while another part intended for ulterior individual development should be optional, according to individual taste and talent. In the obligatory part of instruction certain subjects might be made obligatory for one sex and optional for the other; sewing and algebra, for instance. In this way each sex could choose the most suitable subjects, as is the case now in universities only.

Danger of Sexual Perversions.—A very important point, unfortunately little understood in sexual pedagogy, is that of congenital sexual perversions. Tradition regards every sexual anomaly as an acquired vice, which should be treated by indignation and punishment. The effects of this manner of looking at the question are disastrous. It gives entirely wrong ideas to youth, and shuts the eyes of parents and teachers to the truth.

It is not without a serious motive that I have described at length the repugnant phenomena of sexual pathology (Chapter VIII). Teachers and parents should be thoroughly acquainted with this subject. But this is not enough, for these phenomena commence in infancy. It is a long time before the child whose sexual appetite is perverted has the least idea that his inclinations and desires are considered by others as abnormal. The psychic irradiations of his abnormal appetite usually constitute the sanctuary of his ideal aspirations and sentiments, the object of obscure hopes and struggles which are opposed to nature and the inclinations of his comrades. This is why he neither understands the world nor himself in this respect. His amorous exaltations are ridiculed, or else they inspire disgust. Anxiety and shame alternate more and more with the perverse aspirations of his mind, which slowly increase. It is only when he arrives at the age of puberty that the pervert understands his exceptional position; he then feels that he is exiled from society, abandoned and without a future. He sees his ideal aspirations mocked by men and regarded as a ridiculous caricature or even as a culpable monstrosity. He is obliged to hide his passions like a criminal. As his character is often weak and impulsive, and is combined with a strong and precocious sexual appetite, he is very easily led astray, especially if he discovers suitable objects for his appetite, or perverted companions like himself.

In this way, in secondary schools, we often find groups of young inverts who succeed by cunning in seducing their friends. The mention of these phenomena, which from time to time give rise to school scandals, should be enough to make any one who is unprejudiced understand the urgency for instructing children betimes in sexual questions. This is a duty which is necessary in the name of hygiene and morality.

It is evident that if parents and masters exchange ideas on this subject with children, freely but decently, they will soon bring to light the sexual nature of the latter. They will discover which girls are cold and indifferent, and which are precociously erotic.

It is needless to say that one should speak and act differently in the two cases. There is no risk in instructing the first on the whole sexual question, but prudence is required with the latter, who should be guarded against anything which stimulates their appetite, by warning them of the dangers of venereal disease, illegitimate children and seduction.

We sometimes meet with young girls of hysterical nature with inverted inclinations, who become enamored of other girls and have a sexual repugnance for men. Occasionally a sadist is discovered.

Among boys we observe analogous differences in the intensity and precocity of the sexual appetite. An attentive observer will frequently discover homosexual appetites in boys, for these are comparatively common. Other perversions, such as sadism, masochism, fetichism and exhibitionism, etc., are more rarely met with. Masturbation is common in both sexes.

The great advantage of such discoveries is that children affected with sexual perversions can be put under special supervision, and above all things kept away from boarding schools, where they are subject to great temptations. An invert in a boarding-school is in reality almost in the same position as a young man who sleeps in the same room as young girls, and no one thinks of the danger.