6. The need of exchange with which to pay off maturing foreign short-loans and finance-bills. 1. Payment for merchandise imported constitutes probably the most important source of demand for foreign exchange. Practically the whole amount of our huge importations has had to be paid for with bills of exchange. Whether the merchandise in question is cutlery manufactured in England or coffee grown in Brazil, the chances are it will be paid for by a bill of exchange drawn on London or some other great European financial centre. 2. The second great source of demand originates out of the necessity of making payment for securities purchased abroad. So far as the American participation in foreign bond issues is concerned, the past few years have seen very great developments. Security operations involving a demand for foreign exchange are, however, by no means confined to American participation in foreign bond issues. Accumulated during the course of the past half century, there is a perfectly immense amount of American securities held all over Europe. The greater part of this investment is in bonds and remains untouched for years at a stretch. But then there come times when, for one reason or another, waves of selling pass over the European holdings of "Americans," and we are required to take back millions of dollars' worth of our stock and bonds. Such selling movements do not really get very far below the surface--they do not, for instance, disturb the great blocks of American bonds in which so large a proportion of many of the big foreign fortunes are invested. The same thing is true with stocks, though in that case the selling movements are more frequent and less important. 3. So great is the foreign investment of capital in this country that the necessity of remitting the interest and dividends alone means another continuous demand for very large amounts of foreign exchange. Estimates of how much European money is invested here are little better than guesses. The only sure thing about it is that the figures run well up into the billions and that several hundred millions of dollars' worth of interest and dividends must be sent across the water each year. At the interest periods at the beginning and middle of each year it becomes apparent how large a proportion of our bonds are held in Europe and how great is the demand for exchange with which to make the remittances of accrued interest. At such times the incoming mails of the international banking houses bulge with great quantities of coupons sent over here for collection. For several weeks on either side of the two important interest periods, the exchange market feels the stimulus of the demand for exchange with which the proceeds of these masses of coupons are to be sent abroad.