requirements which, as a class, they insist on satisfying before they choose to have children. If their tastes and requirements receive a durable impress from the sudden improvement in their condition, the benefit to the class will be permanent. But the same cause which enables them to purchase greater comforts and indulgences with the same wages, would enable them to purchase the same, amount of comforts and indulgences with lower wages; and a greater population may now exist, without reducing the labourers below the condition to which they are accustomed. Hitherto this and no other has been the use which the labourers have commonly made of any increase of their means of living; they have treated it simply as convertible into food for a greater number of children. It is probable, therefore, that population would be stimulated, and that after the lapse of a generation the real wages of labour would be no higher than before the improvement: the reduction being partly brought about by a fall of money wages, and partly through the price of food, the cost of which, from the demand occasioned by the increase of population, would be increased. To the extent to which money wages fell, profits would rise; the capitalist obtaining a greater quantity of equally efficient labour by the same outlay of capital. We thus see that a diminution of the cost of living, whether arising from agricultural improvements or from the importation of foreign produce, if the habits and requirements of the labourers are not raised, usually lowers money wages and rent, and raises the general rate of profit.
What is true of improvements which cheapen the production of food, is true also of the substitution of a cheaper for a more costly variety of it. The same land yields to the same labour a much greater quantity of human nutriment in the form of maize or potatoes, than in the form of wheat. If the labourers were to give up bread, and feed only on those cheaper products, taking as their compensation not a greater quantity of other consumable commodities, but earlier mar-
