The object, therefore, of borrowed money for carrying on trade, is more relative to the merchant than to the manufacturer. Borrowing is necessary for collecting all this product and manufacture into the hands of merchants. This, no doubt, is very commonly the operation of credit: interest of money, here, comes in, to indemnify the giver of credit, for the use of his money: but this interest is only due from the time the borrower pays those from whom he collects, to the time he receives payment from those to whom he sells. This interval it is of the highest importance to the merchant to shorten. In proportion as it is long, and in proportion to the rate of interest, he must raise his profits; and in proportion as payments are quick and regular, and interest low, he may diminish them. Whether merchants do regulate their profits, in all commercial nations, according to the exact proportion of the respective rates of interest, and promptitude of payments among them; or whether these are determined by the circumstances of demand and competition in the several foreign markets where the trade is carried on, I leave to merchants to determine. All I shall remark is, that a well founded credit, and prompt payments, will do more service to trade, than any advantage trading men can reap from the different rate of interest in different countries. It must not be concluded from this, that low interest is not a very great advantage to trade; all I contend for, is, that it is not the barometer of it. Another circumstance which puts nations, in our days, much more on a level than they were in former times, I have already hinted at. It is _that general average_ which the great loads of national debts, and the extension of credit, through the several nations of Europe, who pay annually large sums of interest to their creditors, has established. Let me suppose the Dutch, for example, to have fixed, by placard, the rate of their interest at 3 _per cent._ I say, that so soon as the _general average_ of interest comes to stand above that rate, from the price of public funds in England and France, we may safely conclude, that their trade cannot be carried on with any very considerable sum of money borrowed at 3 _per cent._ The consequence then must be, to send the money which regorges in the hands of the frugal Dutch, into other countries, where it can produce a better return, exclusive of all expences of remitting and drawing. What the consequences of this lending to foreigners may be to Holland, shall be afterwards examined.