The differences of circumstances between this and the old countries of Europe, furnish differences of fact whereon to reason, in questions of political economy, and will consequently produce sometimes a difference of result. There, for instance, the quantity of food is fixed, or increasing in a slow and only arithmetical ratio, and the proportion is limited by the same ratio. Supernumerary'births consequently add only to your mortality. Here the immense extent of uncultivated and fertile lands enables every one who will labor, to marry young, and to raise a family of any size. Our food, then, may increase geometrically with our laborers, and our births, however multiplied, become effective. Again, there the best distribution of labor is supposed to be that which places the manufacturing hands alongside the agricultural; so that the one part shall feed both, and the other part furnish...