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BOOK I. CHAPTER XIII. § 4.

tual. The migration from the older parts of the American Confederation to the new territories, which is to all intents and purposes colonization, is what enables population to go on unchecked throughout the Union without having yet diminished the return to industry, or increased the difficulty of earning a subsistence. If Australia or the interior of Canada were as near to Great Britain as Wisconsin and Iowa to New York; if the superfluous people could remove to it without crossing the sea, and were of as adventurous and restless a character, and as little addicted to staying at home, as their kinsfolk of New England, those unpeopled continents would render the same service to the United Kingdom which the old states of America derive from the new. But, these things being as they are—though a judiciously conducted emigration is a most important resource for suddenly lightening the pressure of population by a single effort—and though in such an extraordinary case as that of Ireland under the threefold operation of the potato failure, the poor law, and the general turning out of tenantry throughout the country, spontaneous emigration may at a particular crisis remove greater multitudes than it was ever proposed to remove at once by any national scheme; it still remains to be shown by experience whether a permanent stream of emigration can be kept up, sufficient to take off, as in America, all that portion of the annual increase (when proceeding at its greatest rapidity) which being in excess of the progress made during the same short period in the arts of life, tends to render living more difficult for every averagely-situated individual in the community. And unless this can be done, emigration cannot, even in an economical point of view, dispense with the necessity of checks to population. Further than this we have not to speak of it in this place. The general subject of colonization as a practical question, its importance to old countries, and the principles on which it should be conducted, will be discussed at some length in a subsequent portion of this Treatise.