During the twenty or thirty years last elapsed, so rapid has been the extension of improved processes of agriculture, that even the land yields a greater produce in proportion to the labour employed; the average price of corn had become decidedly lower, even before the repeal of the corn laws had so materially lightened, for the time being, the pressure of population upon production. But though improvement may during a certain space of time keep up with, or even surpass, the actual increase of population, it assuredly never comes up to the rate of increase of which population is capable; and nothing could have prevented a general deterioration in the condition of the human race, were it not that population has in fact been restrained. Had it been restrained still more, and the same improvements taken place, there would have been a larger dividend than there now is, for the nation or the species at large. The new ground wrung from nature by the improvements would not have been all used up in the support of mere numbers. Though the gross produce would not have been so great, there would have been a greater produce per head of the population.
§ 3. When the growth of numbers outstrips the progress of improvement, and a country is driven to obtain the means of subsistence on terms more and more unfavourable, by the inability of its land to meet additional demands except on more onerous conditions; there are two expedients by which it may hope to mitigate that disagreeable necessity, even though no change should take place in the habits of the people with respect to their rate of increase. One of these expedients is the importation of food from abroad. The other is emigration.
The admission of cheaper food from a foreign country, is equivalent to an agricultural invention by which food could be raised at a similarly diminished cost at home. It equally increases the productive power of labour. The return was
