This section is from the "The Science Of Wealth" book, by Amasa Walker.
We will further suppose, that, from the increase of population, more corn is wanted than can be raised; and, consequently, importations are made at an increased price, — equal, say, to fifty per cent. Now if, for the sake of convenience, we take the price of corn to have been originally one dollar a bushel, and to have advanced to one dollar and fifty cents, it will come to pass that tier or quality No.1. will have a rent of $45; No. 2, of $30; No. 3, of $20; and No. 4, which now for the first time produces rent, of $5.
This represents the condition of Great Britain, which, besides raising all the wheat her highly cultivated fields can profitably produce, imports some eighty millions of bushels annually. This causes a large increase of prices; consequently, of money rent.