The third bounty of this kind was that granted (much about the time that we were beginning sometimes to court, and sometimes to quarrel with our American colonies), by the 4th. Geo. III. chap. 26, upon the importation of hemp, or undressed flax, from the British plantations. This bounty was granted for twenty-one years, from the 24th June 1764 to the 24th June 1785. For the first seven years, it was to be at the rate of £8 the ton; for the second at £6; and for the third at £4. It was not extended to Scotland, of which the climate (although hemp is sometimes raised there in small quantities, and of an inferior quality) is not very fit for that produce. Such a bounty upon the importation of Scotch flax in 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 Geo. III. chap. 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 £1, and for every load containing fifty cubic feet of other square timber, at the rate of 12s. For the second three years, it was for deals, to be at the rate of 15s., and for other squared timber at the rate of 8s.; and for the third three years, it was for deals, to be at the rate of 10s.; and for every other squared timber at the rate of 5s.
The fifth bounty of this kind was that granted by the 9th Geo. III. chap. 38, upon the importation of raw silk from the British plantations. It was granted for twenty-one years, from the 1st January 1770, to the 1st January 1791. For the first seven years, it was to be at the rate of £25 for every hundred pounds value; for the second, at £20; and for the third, at £15. The management of the silk-worm, and the preparation of silk, requires so much hand-labour, and labour is so very dear in America, that even this great bounty, I have been informed, was not likely to produce any considerable effect.