This chance of profit or loss from casual turns in the commercial "exchanges" is a very small matter in foreign trade in comparison with the other two grounds of possible profit or loss. The main thing for every commercial nation to see to is, that it have at least a few (the more the better) commodities in general use throughout the world, in the cost of the production of which it has a relative advantage over all competitors, and the demand for which by foreigners is relatively intense and constant. And it will never come amiss for any nation with these two crucial advantages to keep a sharp watch over a class of its own citizens, lest they, shrewdly and greedily, for special reasons of their own, get laws passed the result of which can only be to increase the costs of production of these few exportables, and at the same time lessen the foreign demand for them. Eternal vigilance is the price of liberty of commerce.

As a general rule for the last half century commercial "exchanges" have been "against" Great Britain, that is, her exporters have been able to get more than "par" for goods sent abroad in the price of the bills drawn on them, and her commerce has been profitable to her so far as this cause is concerned; which during the same interval of time the "exchanges" have been "in favor" of the United States, that is, her exporters have been obliged to sell their bills drawn for less than "par," and her commerce so far forth has been unprofitable to her. We may only briefly indicate here the causes of this state of things.

(a) Great Britain has been during this period a vast loaner of Capital to other countries, and particularly to the United States; while the United States has been a vast borrower of Capital, particularly from Great Britain. The interest on these loans from Britain, and the principal also so far as it has been repaid, has been constantly remitted thither in goods for the most part, and bills of exchange drawn on these goods have been sold at all ports, and particularly at New York; the abundance of these bills has tended of course to lower their price at the place of sale, and so far forth to heighten in effect the relatively less abundant British bills drawn on exports thence; and the creditor country for this reason is apt to sell its bills above "par," and the debtor country its bills below par. It makes no difference at this point how the borrowed funds have been invested by the borrowing country, since the interest and the principal must be repaid at some time chiefly in the manner just indicated.

(b) With the exception of a dozen or two articles customs-taxed for simple revenue, Great Britain in this period has kept her ports absolutely open to imports from all the world, and of course to all imports from the United States, which has tended to swell the volume of imports into that country, and the volume of foreign bills drawn on them, particularly of United States bills; while the United States during the same time has excluded imports by customs-taxes designed for that very purpose, to the number of over 4000, and in many cases to a height of tax involving prohibition of import. The Constitution of the United States expressly forbids customs-taxes upon exports, so that goods may indeed go out freely, so far as tariff-barriers are concerned; but as the only impulse that ever carries goods out is to get back more desirable goods in pay, and as these return-goods are greatly restricted or virtually prohibited by the United States, the Constitutionally-free exports are not large enough to help much in keeping down below "par" the price of bills of exchange drawn here. It should also be said that Great Britain is restrained in her exports to the United States by the latter's legal unwillingness to receive them, which tends of course to keep the price of bills drawn on the exports she can and does send still more above "par."

(c) The enormous customs-taxes in the United States on ship-building materials and on almost everything else have practically destroyed the ocean merchant-marine of the country. The bulk of the Freights, therefore, on what foreign commerce there is left to us under the Chinese-wall policy of our Government,—the bulk of the freights both ways,—has to be paid to foreigners, mostly to the British, and these payments too are made in exportable goods, which wretched fact (looked at in its causes) increases exports hence relatively to imports hither, and of course diminishes pro tanto the current price of mercantile bills drawn here. So far as these extra exports to meet freight charges are carried to England, they tend to lift there in the usual way the price of bills drawn on British exports. It is a million pities, no matter from what point of view one looks at it, that the present governing classes of this country totally misapprehend the Nature of foreign trade, and by short-sighted legislation minimize its Benefits to the people.

So far we have been unfolding the causes and courses of foreign exchange on the hypothesis, that both the nations exchanging employ the same standard in measuring Values. While the present paragraphs were in process of composition, the President of the United States signed (July 14, 1890) the so-called "Compromise Silver Bill," which is to go into operation after thirty days, and the effect of which in the judgment of some of the best economists and financiers of the country may be to bring down the national measure of Values from the gold dollar to the silver dollar. We are bound at this point, therefore, to explain the action and reaction on the course of the "exchanges," of a monetary standard lower in general value than the standard prevailing in the commercial world. We have all the data needful for clearing up this matter completely, at once in the inflexible laws of Money and in the actual experience of several of the Nations. For example, England has the gold standard, and India the silver standard; there is an immense commerce between the two countries; silver is merchandise and not money in London, and gold is merchandise and not money in India; every cargo, accordingly, to and from either has to have its value "changed" through the price of current bills into the current money of the other country; the price of silver in gold in London (average) between 1852 and 1867 was 6113 pence per ounce; at 60 pence per ounce the ratio of gold to silver is 1:15.716; between 1875 and 1882 silver drooped (with many fluctuations) in the London market, bearing about the average of 5213 pence per ounce, which is a ratio with gold of 1:18; during the first half of 1890 the price of silver in London was as nearly as possible 43 pence per ounce, which is a ratio with gold of 1:21.93; so that, the prices of India bills in London and of London bills in Bombay have yielded up to the careful observer all the secrets of the "exchanges" between high-standard and low-standard countries.

But we have no need to go out of our own country for illustrations of all this. Between May, 1862, and January, 1879, the "Greenback Dollar" was the measure of current Values. It was depreciated every day of that interval as compared with the gold dollar, and it fluctuated in the comparison more or less nearly every business day. The New York importer bought his foreign goods for gold, paid the customs-taxes on them in gold, and then sold them against greenbacks. How much must he charge for his goods in order to make himself whole? The current premium in gold over greenbacks was posted every day, and perhaps every hour, but was that a safe guide to greenback prices for our importer? Wholesales are rarely for immediate realization in money, and even if they were, the money would have to be rechanged into gold in the future for repurchases abroad. In the uncertainty of greenback values, the importer must insure himself in his prices to-day against a possible further depreciation next week, or next month. In other words, he must speculate in the prospective gold premium. Suppose his industrial cycle to be one month. If he sell his foreign goods in greenbacks to-day as these stand in comparison with gold, and greenbacks fall still lower before the month is out, he will lose money in those transactions; if greenbacks should rise in the interval, he would gain money, because he could get more gold for them in the next turn. To the credit of human nature be it said, that in 9 cases out of 10 a merchant will raise the present prices of his goods in order to make himself as sure as possible in a case where all is uncertain. There can be no reasonable doubt that in the fifteen years of depreciated greenback units, retail prices to ultimate consumers were lifted 10% above the average reckoning of goods in greenbacks from this cause alone.

In regard to exports at that time the facts and principles are still clearer. These exports were sold in Europe for gold. But the bills of exchange drawn on them were sold in New York for greenbacks. Take wheat, for example, of which there was a large export in all those years. The New York broker or banker in buying these bills was obliged to make the conversion from greenbacks to gold. He had to estimate as well as he could what the value of greenbacks would be when the gold-bill became payable in London. In other words, he had to speculate in greenbacks, because he had to take the risk of their declining or advancing value for an interval of time, say, one month. He would not take this risk without virtually making a charge sufficient in his judgment to cover it, and leave him a good profit in any case. This charge came out of the price of the wheat ultimately paid to the growers thereof. The bill of exchange was sold in New York or Chicago in order to get present pay for the farmers who furnished the wheat, and present profit for the commission-merchants or middlemen. But the bill brought less greenbacks than the quoted premium on gold would warrant for that day, on account of the risk, the uncertainty, the speculation. Therefore, less went to the farmers for their wheat per bushel or centner. The masses of the people lose the immense losses of that depreciated money. And during these very years also the Government put customs-taxes to a then unheard-of height on imports from abroad, not primarily for the sake of the revenue to come from the taxes, but chiefly with a view to keep certain foreign goods out of the country altogether, in order that some citizens might be able to sell their own product to the rest at artificially enhanced prices. Thus the natural market abroad for wheat and pork and petroleum and other provisions was enormously lessened by the prohibition of imports,—a market for products is products in market,—at the same moment when the actual prices for products exported were still further diminished by the action of depreciated money on the par of commercial exchange.

Our neighboring Republic of Mexico has had for a long time the so-called bi-metallic standard of Money, the same as the United States have had.[9] When the great fall of silver in gold took place in the London market as indicated above, gold was rapidly exported from Mexico, and soon disappeared from circulation, in accordance with Gresham's Law. For many years now the simple silver standard has prevailed in Mexico. Its entire working in foreign trade through the "exchanges" has been sufficiently demonstrated; and as there is more than a possibility, more even than a bare probability, that the United States under the law of 1890, and other and earlier extremely complicated laws of Money, may drop from bi-metallism to silver monometallism in the near future, in the way of premonition and warning to our own people we may fitly close our discussion of foreign "Exchanges" by briefly stating what of hazard and disaster under the silver standard is now going forward among our neighbors to the southward.

The effect of estimating Mexican transactions in silver money, while all the nations with which they trade estimate theirs in gold, is seen in an artificial enhancement of prices to the Mexicans on all their imports, and an artificial depression of prices to them on their exports. Look first at imports. There is of course a current discount on Mexican silver as compared with the gold in which the imported goods are bought. This discount is now over 20% throughout the commercial world, the London price of silver in gold giving the key to that song. But this is not all by any means; the discount is variable from day to day and from month to month; in changing his gold prices present into silver prices future, the Mexican importers must insure themselves. This necessitates a speculation in the future of silver. What the risk may be will depend somewhat on the activity of the silver market: if silver be rapidly fluctuating in price, the importer will add more to his silver prices additional to the current premium on gold, than if silver be comparatively stable; but in all cases he will add enough to cover all prospective risks. It is quite likely that five per centum is added on the average to wholesale prices by Mexican importers on this ground alone, which addition with all the usual increments must be borne by retail and ultimate prices.