...almost wholly to the natural excess of births over deaths. Compare the words of Malthus on this point: "In the Northern states of America, where the means...early marriages fewer than in any of the modern states of Europe, the population has been found to double itself, for above a century and a half successively,...

...much greater than any increase which has been hitherto known. In the northern states of America, where means of subsistence have been more ample, the manners...marriages fewer, than in any of the modern states of Europe, the population has been found to double itself, for above a century and a half successively,...