The Wealth of Nations by Part 1 Chapter 11 Page 102

In that feast were consumed, first, fifty-three quarters of wheat, which cost nineteen pounds, or seven shillings and twopence a quarter, equal to about one-and-twenty shillings and sixpence of our present money; secondly, fifty-eight quarters of malt, which cost seventeen pounds ten shillings, or six shillings a quarter, equal to about eighteen shillings of our present money; thirdly, twenty quarters of oats, which cost four pounds, or four shillings a quarter, equal to about twelve shillings of our present money. The prices of malt and oats seem here to be higher than their ordinary proportion to the price of wheat.

These prices are not recorded on account of their extraordinary dearness or cheapness, but are mentioned accidentally as the prices actually paid for large quantities of grain consumed at a feast which was famous for its magnificence.