A small seignorage or duty upon the coinage of both gold and silver, would probably increase still more the superiority of those metals in coin above an equal quantity of either of them in bullion. The coinage would, in this case, increase the value of the metal coined in proportion to the extent of this small duty, for the same reason that the fashion increases the value of plate in proportion to the price of that fashion. The superiority of coin above bullion would prevent the melting down of the coin, and would discourage its exportation. If, upon any public exigency, it should become necessary to export the coin, the greater part of it would soon return again, of its own accord. Abroad, it would sell only for its weight in bullion. At home, it would buy more than that weight. There would be a profit, therefore, in bringing it home again. In France, a seignorage of about eight per cent. is imposed upon the coinage, and the French coin, when exported, is said to return home again, of its own accord. The occasional fluctuations in the market price of gold and silver bullion arise from the same causes as the like fluctuations in that of all other commodities. The frequent loss of those metals from various accidents by sea and land, the continual waste of them in gilding and plating, in lace and embroidery, in the wear and tear of coin, and in that of plate, require, in all countries which possess no mines of their own, a continual importation, in order to repair this lose and this waste. The merchant importers, like all other merchants, we may believe, endeavour, as well as they can, to suit their occasional importations to what they judge is likely to be the immediate demand. With all their attention, however, they sometimes overdo the business, and sometimes underdo it. When they import more bullion than is wanted, rather than incur the risk and trouble of exporting it again, they are sometimes willing to sell a part of it for something less than the ordinary or average price. When, on the other hand, they import less than is wanted, they get something more than this price. But when, under all those occasional fluctuations, the market price either of gold or silver bullion continues for several years together steadily and constantly, either more or less above, or more or less below the mint price, we may be assured that this steady and constant, either superiority or inferiority of price, is the effect of something in the state of the coin, which, at that time, renders a certain quantity of coin either of more value or of less value than precise quantity of bullion which it ought to contain. The constancy and steadiness of the effect supposes a proportionable constancy and steadiness in the cause.