The Wealth of Nations by Part 2 Chapter 2 Page 56

the interest and commission upon the whole accumulated sum. Even those Scotch banks which never distinguished themselves by their extreme imprudence, were sometimes obliged to employ this ruinous resource.

The gold coin which was paid out either by the Bank of England, or by the Scotch banks, in exchange for that part of their paper which was over and above what could be employed in the circulation of the country, being likewise over and above what could be employed in that circulation, was sometimes sent abroad in the shape of coin, sometimes melted down and sent abroad in the shape of bullion, and sometimes melted down and sold to the Bank of England at the high price of four pounds an ounce. It was the newest, the heaviest, and the best pieces only which were carefully picked out of the whole coin, and either sent