The Wealth of Nations by Part 4 Chapter 8 Page 49

to one-fifth part of the rate, or to sixteenpence upon each skin; all of which, except half the Old Subsidy, amounting only to twopence, was drawn back upon exportation. This duty upon the importation of so important a material of manufacture had been thought too high, and in the year 1722 the rate was reduced to two shillings and sixpence, which reduced the duty upon importation to sixpence, and of this only one half was to be drawn back upon exportation. The same successful war put the country most productive of beaver under the dominion of Great Britain, and beaver skins being among the enumerated commodities, their exportation from America was consequently confined to the market of Great Britain.

Our manufacturers soon bethought themselves of the advantage which they might make of this circumstance, and in the year