The Wealth of Nations by Part 1 Chapter 11 Page 146

effect more or less at all the different markets in the kingdom, but particularly at those in the neighbourhood of London, which require to be supplied from the greatest distance. In 1648, accordingly, the price of the best wheat at Windsor market appears, from the same accounts, to have been L4 5s., and in 1649 to have been L4 the quarter of nine bushels. The excess of those two years above L2 10s. (the average price of the sixteen years preceding 1637) is L3 5s.; which divided among the sixty-four last years of the last century will alone very nearly account for that small enhancement of price which seems to have taken place in them. These, however, though the highest, are by no means the only high prices which seem to have been occasioned by the civil wars.

The second event was the bounty upon the exportation of