The fifth bounty of this kind was that granted by the 9th George III, c. 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 twenty-five pounds for every hundred pounds value; for the second at twenty pounds; and for the third at fifteen pounds. 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.

The sixth bounty of this kind was that granted by 2nd George III, c.

50, for the importation of pipe, hogshead, and barrel staves and heading from the British