The _Rickets_ is a disorder, as to which BOERHAAVE is mistaken, when he says, it does not attack persons after the age of three years. It is not uncommon to see young people of both sexes, but especially the female, who, after their having been well-shaped to the age of eight, ten, twelve, or fourteen, and even sixteen years, fall, little by little, into a distortion of shape, through the curvature of the spine; and this disorder sometimes becomes very considerable. It is not here the place for entering into particulars of this ailment, nor into an enumeration of the causes which produce it. HIPPOCRATES has pointed out two[51]. I shall have, perhaps, occasion of communicating, in another work, what several observations have taught me on that subject; but what I ought not to omit here, is, that self-pollution holds the first rank among the causes that produce it. M. HOFFMAN having already observed, that young persons, who give themselves up to the pleasures of venery before they have attained their full growth, could not thrive, and must rather go back than advance in their stature[52], I only add, that it is obvious to sense, that a cause which can hinder growth, must, _a fortiori_, disturb the order, and produce those irregularities in the course of it, which contribute to the disorders of which I am treating. One symptom common to both sexes, and which I place under this head, because it is the most frequent among women, is that indifference which this infamous habit leaves for the lawful pleasures of the marriage-bed, even while the desires of sensuality, and strength are not yet extinguished; an indifference, which does not only attach numbers to a single life, but which often pursues even to the nuptial couch. In the collection of cases made by Dr. BECKERS, a woman confesses, that this vile habit had got such an ascendant over her senses, that she had an aversion against the lawful means of satisfying the desires of nature, in the natural way. I myself know a man, who being taught these abominations by his tutor, had the like distaste, on the first of his marriage; and his anguish at this situation, joined to the faintness contracted by that habit, threw him into a profound melancholy, which yielded, however, at length, to the nervous and restorative remedies. Here, before I proceed farther, let me entreat fathers and mothers to make their own reflections on the occasion of the misfortune of this last mentioned patient; and there are more examples than one of the like case. If one may, to such a degree, be deceived in the choice of those to whom the important care of forming the head and heart of young persons, what ought one not to fear from those, who, being only designed to give the corporal graces and talents of education, are less scrupulously examined as to their morals? And what ought not one still more to fear from servants, too often hired without any character of their morals at all.