In the United States a Western merchant who buys $1,000 worth of cotton goods, for instance, of a Boston commission-house on credit, customarily gives his note for the amount, and this note is put upon the market, or presented at a bank for discount. This plan, however, puts all risk upon the one who discounted the note. In the United States such promissory notes are the forms of credit most used between merchants and buyers. The custom, however, is quite different in England and Germany (and generally, it is stated, on the Continent), where bills of exchange are employed in cases where we use a promissory note. A house in London sells $1,000 worth of cotton goods to A, in Carlisle, on a credit of sixty days, draws a bill of exchange on A, which is a demand upon A to pay in a given time (e.g., sixty days), and if “accepted” by him is a legal obligation. The London house takes this bill (perhaps adding its own firm name as indorsers to the paper), and presents it for discount at a London bank. This now explains why it is that, when a particular industry is prosperous and many goods are sold, there is more “paper” offered for discount at the banks (cf. p. 222), and why capital flows readily in that direction. It is chiefly in the latter form [promissory notes] that it has become, in commercial countries, an express occupation to issue such substitutes for money. Dealers in money wish to lend, not their capital merely, but their credit, and not only such portion of their credit as consists of funds actually deposited with them, but their power of obtaining credit from the public generally, so far as they think they can safely employ it. This is done in a very convenient manner by lending their own promissory notes payable to bearer on demand—the borrower being willing to accept these as so much money, because the credit of the lender makes other people willingly receive them on the same footing, in purchases or other payments. These notes, therefore, perform all the functions of currency, and render an equivalent amount of money, which was previously in circulation, unnecessary. As, however, being payable on demand, they may be at any time returned on the issuer, and money demanded for them, he must, on pain of bankruptcy, keep by him as much money as will enable him to meet any claims of that sort which can be expected to occur within the time necessary for providing himself with more; and prudence also requires that he should not attempt to issue notes beyond the amount which experience shows can remain in circulation without being presented for payment.