The annual importation of the precious metals into Cadiz and Lisbon, indeed, is not equal to the whole annual produce of the mines of America. Some part is sent annually by the Acapulco ships to Manilla; some part is employed in the contraband trade which the Spanish colonies carry on with those of other European nations; and some part, no doubt remains in the country. The mines of America, besides, are by no means the only gold and silver mines in the world. They are, however, by far the most abundant.

The produce of all the other mines which are known is insignificant, it is acknowledged, in comparison with theirs; and the far greater part of their produce, it is likewise acknowledged, is annually imported into Cadiz and Lisbon. But the consumption of Birmingham alone, at the rate of fifty thousand pounds a year, is