The quantity of gold and silver imported at both Cadiz and Lisbon (including not only what comes under register, but what may be supposed to be smuggled) amounts, according to the best accounts,579 to about six millions sterling a year.
According to Mr. Meggens580 the annual importation of the precious metals into Spain, at an average of six years; viz. from 1748 to 1753, both inclusive; and into Portugal, at an average of seven years; viz. from 1747 to 1753, both inclusive;581 amounted in silver to 1,101,107 pounds weight; and in gold to 49,940 pounds weight. The silver, at sixty-two shillings the pound Troy, amounts to £3,413,431 10s.582 sterling. The gold, at forty-four guineas and a half the pound Troy, amounts to £2,333,446 14s. sterling. Both together amount to £5,746,878 4s. sterling. The account of what was imported under register, he assures us is exact. He gives us the detail of the particular places from which the gold and silver were brought, and of the particular quantity of each metal, which, according to the register, each of them afforded. He makes an allowance too for the quantity of each metal which he supposes may have been smuggled. The great experience of this judicious merchant renders his opinion of considerable weight.
According to the eloquent and, sometimes, well-informed Author of the Philosophical and Political History of the establishment of the Europeans in the two Indies, the annual importation of registered gold and silver into Spain, at an average of eleven years; viz. from 1754 to 1764, both inclusive; amounted to 13,984,185¾583 piastres of ten reals. On account of what may have been smuggled, however, the whole annual importation, he supposes, may have amounted to seventeen millions of piastres; which, at 4s. 6d. the piastre, is equal to £3,825,000 sterling. He gives the detail too of the particular places from which the gold and silver were brought, and of the particular quantities of each metal which, according to the register, each of them afforded.584 He informs us too, that if we were to judge of the quantity of gold annually imported from the Brazils into Lisbon by the amount of the tax paid to the king of Portugal, which it seems is one-fifth of the standard metal, we might value it at eighteen millions of cruzadoes, or forty-five millions of French livres, equal to about two millions sterling. On account of what may have been smuggled, however, we may safely, he says, add to this sum an eighth more, or £250,000 sterling, so that the whole will amount to £2,250,000 sterling.585 According to this account, therefore, the whole annual importation of the precious metals into both Spain and Portugal, amounts to about £6,075,000 sterling.
Several other very well authenticated, though manuscript,586 accounts, I have been assured, agree, in making this whole annual importation amount at an average to about six millions sterling; sometimes a little more, sometimes a little less.
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,587 is equal to the hundred-and-twentieth part of this annual importation at the rate of six millions a year. The whole annual consumption of gold and silver, therefore, in all the different countries of the world where those metals are used, may perhaps be nearly equal to the whole annual produce. The remainder may be no more than sufficient to supply the increasing demand of all thriving countries. It may even have fallen so far short of this demand as somewhat to raise the price of those metals in the European market.
The quantity of brass and iron annually brought from the mine to the market is out of all proportion greater than that of gold and silver. We do not, however, upon this account, imagine that those coarse metals are likely to multiply beyond the demand, or to become gradually cheaper and cheaper. Why should we imagine that the precious metals are likely to do so? The coarse metals, indeed, though harder, are put to much harder uses, and, as they are of less value, less care is employed in their preservation. The precious metals, however, are not necessarily immortal any more than they, but are liable too to be lost, wasted, and consumed in a great variety of ways.
The price of all metals, though liable to slow and gradual variations, varies less from year to year than that of almost any other part of the rude produce