In the philosophy of those moralists, the physical interests of mankind were of no moment whatever. The church that burnt nuns and priests for yielding to the power of an irrepressible instinct, has in millions of cases sanctioned the nuptials of immature minors and the nature-insulting unions of avarice and flunkeyism. For the sake of a small fee it has encouraged the marriage of reluctant paupers, but howled its anathemas against the unions of orthodox Christians with gentiles, Jews, or Christian dissenters. Thus encouraged, Christian parents have not hesitated to sacrifice the highest interests of their children and children’s children to considerations of “expedience.” In Spanish America thousands of baby-brides—girls of twelve and thirteen; nay, even of ten years—are delivered to the marital tyranny of wealthy old debauchees; in France, Italy, and Austria millions of mutually reluctant boys and girls are compelled to wed in obedience to the decision of a business committee of relatives and panders. In the cities of the northland nations marriages of expedience, though rarer, are still of daily occurrence. “Whatever is natural is wrong,” was the shibboleth of the medieval dogmatists, and the protests of instinct were suppressed in the name of morality. D.—PENALTIES OF NEGLECT. Next to dietetic abuses, premature and unfit marriage is undoubtedly the most fruitful cause of the degeneration of the human species. The penalties of Nature, which every husbandman knows to avoid in the case of his cattle, are recklessly risked by parents and guardians of helpless children—perhaps in the vague hope that the normal consequences might be averted by the intercession of supernatural agencies. But miracles have ceased to suspend the operation of Nature’s laws, and it would not be an over-estimate to say that a hundred million Christians annually incur the penalty of moral or physical sufferings and premature death, as a retribution of their own or their parents’ outrages against the laws of the sexual instinct. Premature intercourse of the sexes stunts the further development of the organism and entails physical defects on the offspring of a series of successive generations. Puny, weakly, and scrofulous children people the cities of southern Europe from Havre to Messina, though infant mortality has assumed proportions which partly counteract the evil by the sternest of Nature’s remedies. Our fatuous modes of indoor education, combined with the influence of a stimulating diet (meat, pepper-sauces, and coffee, instead of fruit, bread, and milk) systematically promote premature prurience. Our school-boys are thus driven to vices of which they know neither the name nor the physiological significance, though, like the victims of convent-life, they suffer the consequences— Losing their beauty and their native grace,