The Wealth of Nations by Part 1 Chapter 8 Page 32

variations in the price of labour not only do not correspond either in place or time with those in the price of provisions, but they are frequently quite opposite.

Grain, the food of the common people, is dearer in Scotland than in England, whence Scotland receives almost every year very large supplies. But English corn must be sold dearer in Scotland, the country to which it is brought, than in England, the country from which it comes; and in proportion to its quality it cannot be sold dearer in Scotland than the Scotch corn that comes to the same market in competition with it.

The quality of grain depends chiefly upon the quantity of flour or meal which it yields at the mill, and in this respect English grain is so much superior to the Scotch that, though often dearer in appearance, or