There can be but one solution to the problem, either that pregnancies are very generally prevented, or that, occurring, they are prematurely cut short. We have seen that countless confessions prove that this surmise is true. In the treatise to which we have already alluded, its author has shown by a series of unanswerable deductions, based on material gathered from many sources both at home and abroad, that forced abortions in America are of very frequent occurrence, and that this frequency is rapidly increasing, not in the cities alone, but in the country districts, where there is less excuse on the ground of excessive expenditures, the claims of fashionable life, or an overcrowding of the population. It was proved, for instance, that in one State that was named, one of the wealthiest in the Union, the natural increase of the population, or the excess of the births over the deaths, has of late years been wholly by those of recent foreign origin. This was the state of things existing in 1850; three years later it was evident that the births in that commonwealth, with the usual increase, had resulted in favor of foreign parents in an increased ratio. In other words, it is found that, in so far as depends upon the American and native element, and in the absence of the existing immigration from abroad, the population of our older States, even allowing for the loss by emigration, is stationary or decreasing. The strange and otherwise unaccountable phenomenon to which we are now referring, appears to have been first elucidated in a memoir, upon the decrease of the rate of increase of population now obtaining in Europe and America, read by the same author in 1858 to the American Academy of Arts and Sciences, as a contribution to the science of political economy. That paper, with all its mass of evidence, that as yet there seems to have been no attempt to controvert, we find embodied in the treatise to which I have referred, and which will prove of absorbing interest to even the casual reader. Thus it is seen that abortion is a crime not merely against the life of the child and the health of its mother, and against good morals, but that it strikes a blow at the very foundation of society itself.