of another commodity, who sell it to ten shopkeepers in London. There would be no occasion for the ten shopkeepers in London to send yearly to York guineas for the payment of the York manufacturers, and for the ten York shopkeepers to send yearly as many guineas to London. It would only be necessary for the York manufacturers to receive from each of the shopkeepers at their own door the money in question, giving in return letters which should acknowledge the receipt of it; and which should also direct the money, lying ready in the hands of their debtors in London, to be paid to the London manufacturers, so as to cancel the debt in London in the same manner as that at York. The expense and the risk of all transmission of money would thus be saved. Letters ordering the transfer of the debt are termed, in the language of the present day, bills of exchange. They are bills by which the debt of one person is exchanged for the debt of another; and the debt, perhaps, which is due in one place, for the debt due in another."
Bills of exchange having been found convenient as means of paying debts at distant places without the expense of transporting the precious metals, their use was afterwards greatly extended from another motive. It is usual in every trade to give a certain length of credit for goods bought: three months, six months, a year, even two years, according to the convenience or custom of the particular trade. A dealer who has sold goods, for which he is to be paid in six months, but who desires to receive payment sooner, draws a bill on his debtor payable in six months, and gets the bill discounted by a banker or other money-lender, that is, transfers the bill to him, receiving the amount, minus interest for the time it has still to run. It has become one of the chief functions of bills of exchange to serve as a means by which a debt due from one person can thus be made available for obtaining credit from another. The convenience of the expedient has led to the frequent creation of bills of
