In the present state of society, a great number of persons are compelled to make an appearance and to live in a style, which consumes all their incomes, leaving nothing, or next to nothing, as a provision for their children. To such persons a great number of children, is a never failing source of discomfort and apprehension; of a state of bodily, mental, and pecuniary vexation and suffering, from which there is no escape. This state of things pervades, to a very great extent, that respectable class of society called genteel. To those whose incomes depend on some particular exertion, which cannot be remitted, these distressing circumstances are, from various causes, greatly increased. To those who constitute the great mass of the community, whose daily bread is alone procured by daily labour, a large family is almost always the cause of ruin, both of parents and children: reducing the parents to cheerless, hopeless, and irremediable poverty; depriving the children of those physical, moral, and mental helps which are necessary to enable them to live in comfort, and turning them out at an early age to prey upon the world, or to become the world’s prey. For these general reasons, cognizable by every body, it is of the greatest possible importance that married people should be informed of a method to prevent such tremendous evils. If methods can be pointed out by which all the enjoyment of wedded life may be partaken of without the apprehension of TOO LARGE _a family_, and all its bitter consequences, he, surely, who points them out, must be a benefactor of mankind. The means of prevention are simple, and harmless, and might, but for the false delicacy of the press, or, rather, of those for whom it caters, have been more generally communicated. A course of experiments instituted several years past, with a view to test the efficacy of the galvanic power, as a check to reproduction, has demonstrated and proved its perfect adaptation, to the accomplishment of this important object. The Editor has a very simple and perfectly harmless instrument, (so far as the health of the mother is concerned,) and one which may be depended upon for this purpose. The application requires to be immediate, and its effect is instantaneous. Like many other operations, the effect of which is known, it may be somewhat difficult satisfactorily to explain its _modus operandi_; nevertheless, the certainty of its action has been clearly proved. It is known to impart a slight momentary impetus to the parts, so that the vivifying influence of the semen is destroyed or expelled.