When again in private life we see a whole family one by one dropping into the grave under the Ate of some inherited malady, and the parents perhaps surviving them, do our minds ever go back silently to that day twenty-five or thirty years before on which under the fairest auspices, amid the rejoicings of friends and acquaintances, a bride and bridegroom joined hands with one another? In making such a reflection we are not opposing physical considerations to moral, but moral to physical; we are seeking to make the voice of reason heard, which drives us back from the extravagance of sentimentalism on common sense. The late Dr. Combe is said by his biographer to have resisted the temptation to marriage, because he knew that he was subject to hereditary consumption. One who deserved to be called a man of genius, a friend of my youth, was in the habit of wearing a black ribbon on his wrist, in order to remind him that, being liable to outbreaks of insanity, he must not give way to the natural impulses of affection: he died unmarried in a lunatic asylum. These two little facts suggest the reflection that a very few persons have done from a sense of duty what the rest of mankind ought to have done under like circumstances, if they had allowed themselves to think of all the misery which they were about to bring into the world. If we could prevent such marriages without any violation of feeling or propriety, we clearly ought; and the prohibition in the course of time would be protected by a ‘horror naturalis’ similar to that which, in all civilized ages and countries, has prevented the marriage of near relations by blood. Mankind would have been the happier, if some things which are now allowed had from the beginning been denied to them; if the sanction of religion could have prohibited practices inimical to health; if sanitary principles could in early ages have been invested with a superstitious awe. But, living as we do far on in the world’s history, we are no longer able to stamp at once with the impress of religion a new prohibition. A free agent cannot have his fancies regulated by law; and the execution of the law would be rendered impossible, owing to the uncertainty of the cases in which marriage was to be forbidden. Who can weigh virtue, or even fortune against health, or moral and mental qualities against bodily? Who can measure probabilities against certainties? There has been some good as well as evil in the discipline of suffering; and there are diseases, such as consumption, which have exercised a refining and softening influence on the character. Youth is too inexperienced to balance such nice considerations; parents do not often think of them, or think of them too late. They are at a distance and may probably be averted; change of place, a new state of life, the interests of a home may be the cure of them. So persons vainly reason when their minds are already made up and their fortunes irrevocably linked together.