The Wealth of Nations by Part 4 Chapter 8 Page 12

Scotch flax into England would have been too great a discouragement to the native produce of the southern part of the United Kingdom.

The fourth bounty of this kind was that granted by the 5th George III, c. 45, upon the importation of wood from America. It was granted for nine years, from the 1st January 1766 to the 1st January 1775. During the first three years, it was to be for every hundred and twenty good deals, at the rate of one pound, and for every load containing fifty cubic feet of other squared timber at the rate of twelve shillings. For the second three years, it was for deals to be at. the rate of fifteen shillings, and for other squared timber at the rate of eight shillings; and for the third three years, it was for deals to be at the rate of ten shillings, and for other squared timber at the rate of five shillings.