Conditions have changed materially in this respect. The Federal Reserve Act grants to national banks the privilege of accepting drafts or bills of exchange growing out of transactions involving the importation or exportation of goods. This acceptance privilege was accorded to national banks only a short time before the commencement of hostilities abroad, and this fact in conjunction with the resulting dislocation in the delicate machinery of international credit brought about by the war, together with the coincidental establishment of American branch banks in South America, has contributed in a large measure to bring about the use of what is known now as "Dollar Credits." As a factor in creating the existing demand for Dollar Credits, the establishment of American branch banks abroad cannot be emphasized too strongly. Through these branch banks, a new and adequate medium for the liquidation of transactions as between the United States and certain South American countries, especially the Argentine, Brazil, and Uruguay, has been placed at the disposal of our merchants. A direct channel is now open to the ebb and flow of credit transfer between the United States and the countries mentioned, and, as a natural sequence, the former disparity existing against the dollar, as compared with pounds sterling and the principal continental exchanges, has disappeared. The resulting equalization in the rates of exchange benefits the American merchant to the extent of relieving him of the tribute formerly paid to the indirect channels of liquidation, or, in other words, to the foreign banker. The Dollar Credit is of capital importance to every American merchant who is interested either directly or indirectly in the importation of commodities of any character. A study of the advantages accruing from this form of credit will demonstrate the desirability of its general employment as the vehicle for financing not only our own imports but also those of other countries. Primarily, it is more economical than the Sterling or Continental Credit, for the initial commission cost of issuance is lower. Secondly, it is based on a known quantity, the dollar, a factor of supreme importance in these days of extreme and violent fluctuations in the exchange rates, and therefore all exchange risk is eliminated from the operation as far as the importer is concerned. Maturities drawn under Dollar Credits are due and payable in dollars on a given date, and no question arises as to what the exchange rate on London may be ninety days after acceptance of the bill.