The Wealth of Nations by Part 4 Chapter 4 Page 5

drawn back, provided the exportation took place within three years.

We still have, though not altogether, yet very nearly, the monopoly of the sugars of our West Indian Islands. If sugars are exported within a year, therefore, all the duties upon importation are drawn back, and if exported within three years all the duties, except half the Old Subsidy, which still continues to be retained upon the exportation of the greater part of goods. Though the importation of sugar exceeds, a good deal, what is necessary for the home consumption, the excess is inconsiderable in comparison of what it used to be in tobacco.

Some goods, the particular objects of the jealousy of our own manufacturers, are prohibited to be imported for home consumption. They may, however, upon paying certain duties, be imported and warehoused for exportation.