Page:The wealth of nations, volume 2.djvu/209

 profit by the sale of the foreign coin or bullion which sometimes falls to it by the expiring of receipts, and which is always kept till it can be sold with advantage. It makes a profit likewise by selling bank money at five per cent agio, and buying it in at four. These different emoluments amount to a good deal more than what is necessary for paying the salaries of officers, and defraying the expense of management. What is paid for the keeping of bullion upon receipts, is alone supposed to amount to a net annual revenue of between one hundred and fifty thousand two hundred thousand guilders. Public utility, however, and not revenue, was the original object of this institution. Its object was to relieve the merchants from the inconvenience of a disadvantageous exchange. The revenue which has arisen from it was unforeseen, and may be considered as accidental. But it is now time to return from this long digression, into which I have been insensibly led in endeavoring to explain the reasons why the exchange between the countries which pay in what is called bank money, and those which pay in common currency, should generally appear to be in favor of the former, and against the latter. The former pay in a species of money of which the intrinsic value is always the same, and exactly agreeable to the standard of their respective mints; the latter is a species of money of which the intrinsic value is continually varying, and is almost always more or less below that standard.