Very similar to these inland bills in their nature and course and usefulness are Foreign Bills of Exchange, which, as a vastly important topic, especially in its relations with Foreign Trade, we must now study minutely and completely. Commercial relations between two countries, let us say, for instance, France and England, always give rise to a mutual indebtedness of their merchants; if these reciprocal debts were all to be paid by the actual sending of money to and from, there would have to be a constant and expensive and more or less hazardous outward and inward flow of the precious metals in respect to each country; all which necessity is neatly obviated by the use of reciprocal bills of exchange, and coin is only transmitted to settle the balances on whichever side there may happen an excess of debt at the time. French dealers are always sending goods to England, and English dealers goods to France; and for what they send to England the French merchants draw bills of exchange on the parties to whom the goods are consigned, and the English merchants draw similar bills on their debtors in France; then these bills are bought up by bankers or brokers in either country, and virtually exposed again for sale through new bills drawn against them to any parties who may have debts to pay in the other country. Thus bills on London, in other words, on English debtors, are always for sale in France; and bills on France, that is, on French debtors, are always for sale in London; the reciprocal debtors of the two countries, therefore, instead of sending coin to cancel their debts, buy and transmit these bills. Let us take a sample instance. Pierre & Co. of Paris send a cargo of wine worth £1000 in English money to John Barclay of London. Barclay thus becomes indebted to the Paris firm to that amount, and Pierre & Co. draw at once, so soon as the cargo is despatched, a bill in francs to the equivalent of £1000. If they themselves have no debt to pay in London, they will sell this bill immediately to a Paris banker or broker (if the exchange be then at par) for its full face _minus_ interest for the time it has to run, say two months; this broker is now ready to sell this bill again, or what is the same, his own bill drawn on the strength of it, to anybody in Paris who may have a debt to pay in London; and the party in London who receives it in liquidation of a French debt to him, presents it at maturity to John Barclay for payment. Thus one bill of exchange serves the ends of two creditors and one debtor: Pierre & Co. get their pay for the wine, the London party gets his pay for goods, and Barclay pays his debt, by means of it. A bill drawn in London for a cargo of hardware sent to Paris is similarly negotiated with a London broker or banker, and finds its way similarly to France in payment of some English debt owed there, and ends its course when it reaches the French firm on which it was originally drawn.