The Wealth of Nations by Part 4 Chapter 5 Page 53

What is called a bounty is sometimes no more than a drawback, and consequently is not liable to the same objections as what is properly a bounty. The bounty, for example, upon refined sugar exported may be considered as a drawback of the duties upon the brown and muscovado sugars from which it is made. The bounty upon wrought silk exported, a drawback of the duties upon raw and thrown silk imported. The bounty upon gunpowder exported, a drawback of the duties upon brimstone and saltpetre imported. In the language of the customs those allowances only are called drawbacks which are given upon goods exported in the same form in which they are imported. When that form has been so altered by manufacture of any kind as to come under a new denomination, they are called bounties.

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