whenever population makes a more rapid progress than improvement, is not solely applicable to countries which are fed from their own soil, but in substance applies quite as much to those which are willing to draw their food from any accessible quarter that can afford it cheapest. A sudden and great cheapening of food, indeed, in whatever manner produced, would, like any other sudden improvement in the arts of life, throw the natural tendency of affairs a stage or two further back, though without altering its course. There is one contingency connected with freedom of importation, which may yet produce temporary effects greater than were ever contemplated either by the bitterest enemies or the most ardent adherents of free-trade in food. Maize, or Indian corn, is a product capable of being supplied in quantity sufficient to feed the whole country, at a cost, allowing for difference of nutritive quality, cheaper even than the potato. If maize should ever substitute itself for wheat as the staple food of the poor, the productive power of labour in obtaining food would be so enormously increased, and the expense of maintaining a family so diminished, that it would require perhaps some generations for population, even if it started forward at an American pace, to overtake this great accession to the facilities of its support.
§ 4. Besides the importation of corn, there is another resource which can be invoked by a nation whose increasing numbers press hard, not against their capital, but against the productive capacity of their land: I mean Emigration, especially in the form of Colonization. Of this remedy the efficacy as far as it goes is real, since it consists in seeking elsewhere those unoccupied tracts of fertile land, which if they existed at home would enable the demand of an increasing population to be met without any falling off in the productiveness of labour. Accordingly, when the region to be colonized is near at hand, and the habits and tastes of the people sufficiently migratory, this remedy is completely effec-
