two quantities than from the less, diminishes the difference between them. The imposition of a tithe on corn would take a tithe also from corn-rent: for, if we reduce a series of numbers by a tenth each, the differences between them are reduced one tenth.
For example, let there be five qualities of land, which severally yield, on the same extent of ground and with the same expenditure, 100, 90, 80, 70, and 60 bushels of wheat, the last of these being the lowest quality which the demand for food renders it necessary to cultivate. The rent of these lands will be as follows:
The land producing 100 bushels will yield a rent of 100-60, or 40 bushels.
That producing 90 bushels, a rent of 90-60, or 30 bushels.
That producing 80 bushels, a rent of 80-60, or 20 bushels.
That producing 70 bushels, a rent of 70-60, or 10 bushels.
That producing 60 bushels, will yield no rent.
Now let a