Page:The wealth of nations, volume 1.djvu/256

, have shown the same fear of the superabundance of tobacco, which the proprietors of the old vineyards in France have of the superabundance of wine. By act of assembly they have restrained its cultivation to six thousand plants, supposed to yield a thousand weight of tobacco, for every negro between sixteen and sixty years of age. Such a negro, over and above this quantity of tobacco, can manage, they reckon, four acres of Indian corn. To prevent the market from being overstocked, too, they have sometimes, in plentiful years, we are told by Dr. Douglas (I suspect he has been ill-informed), burned a certain quantity of tobacco for every negro, in the same manner as the Dutch are said to do of spices. If such violent methods are necessary to keep up the present price of tobacco, the superior advantage of its culture over that of corn, if it still has any, will not probably be of long continuance.

It is in this manner that the rent of the cultivated land, of which the produce is human food, regulates the rent of the greater part of other cultivated land. No particular produce can long afford less; because the land would immediately be turned to another use: and if any particular produce commonly affords more, it is because the quantity of land which can be fitted for it is too small to supply the effectual demand.

In Europe, corn is the principal produce of land which serves immediately for human food. Except in particular situations, therefore, the rent of corn land regulates in Europe that of all other cultivated land. Britain need envy neither the vineyards of France nor the olive plantations of Italy. Except in particular situations, the value of these is