General prices are conveniently compared from one time to another through the use of index numbers. An index number of any article is the per cent which its price at any certain date is of its price at another date (or of the average for a series of prices) taken as a base or standard. Thus if the average price of cotton in the base year were 10 cents (taken as 100) and the price rose to 12 cents, the index number would be 120. A tabular index number is the per cent which the price of a selected group of articles at any certain date is of the price of the same group of articles at a date which has been taken as the base.[4]
The principal index numbers of the leading countries are here shown. The fact that from 1862 to 1879 inclusive prices in the United States were expressed in an irredeemable paper standard makes comparisons for that period misleading. A better idea is obtained by using as the base for each of the several series, the average of prices in each country for the years 1890 to 1899.
§ 5. #Gold production and monetary legislation, 1850 to 1879#. The unprecedented increase in gold production between 1849 and 1853, and the continuance of production in volume about four-fold as great as that of the decade 1840-49 was reflected at once in a rise of prices. This was a period of prosperity in business culminating in the crisis of 1857 (felt more or less in all the leading countries). This prosperity accelerated the effect of increasing quantities of the standard money. Credit was stimulated and the rate of circulation and the efficiency of money were increased. Prices rose to a temporary maximum in 1857 and then fell as a great international financial crisis occurred. The great new supplies of gold had been readily taken ("absorbed") into the monetary circulation of the world, to meet the needs of rapidly growing commerce and industry. In the European countries,[5] prices in terms of gold, tho fluctuating somewhat, kept at about the same level from 1860 to 1870. The years 1871 and 1872 were very prosperous and showed rapidly rising prices which reached a maximum in 1873, when a financial panic occurred.
In that very year, just as the gold production for the first time since 1851 had fallen below $100,000,000, several notable changes in monetary legislation were made which made gold more important in the circulation of a number of countries.
In 1873 Germany made gold the standard throughout the new German Empire (having prepared the way by legislation in 1871 which made gold a legal tender alongside of silver), and provided that silver was thenceforth to be used only in the subsidiary coinage. The same year Belgium, and the next year the other countries of the Latin Union (France, Switzerland, and Italy) took steps which resulted in demonetizing silver; that is, in limiting its coinage to governmental account, and in making gold their one standard money.
The United States at that time had neither gold nor silver regularly in circulation (except in California), and there was a long-continued discussion of "a return to specie payments," which meant the return to a metallic standard, and the redemption of greenbacks on demand. Meantime in 1873 a law was passed making the gold dollar "the unit of value," and dropping out the standard silver dollar from the list of coins authorized to be issued at the mint.[6] From 1873 until 1879, prices (in greenbacks) were falling in this country very rapidly because the country with the increase in population, wealth, and business, was "growing up to" its unchanging currency supply. For a like reason at the same time gold prices throughout the world were falling. While this country was lowering its level of prices from an inflated paper money to a gold commodity basis, the gold basis itself was sinking to a lower level. The very demand of our treasury and banks for gold caused the retention of our own gold product (which between 1864 and 1876 had been nearly all exported) and required an enormous net importation of gold between 1878 and 1888. This reduced suddenly by one-half the amount available each year from our production for the rest of the world.
§ 6. #Definition of the standard of deferred payments.# These various changes in the purchasing power of the standard money had great effects upon industrial conditions. Particularly had they shifted the positions and claims of debtors and creditors, because of the enormous importance of money as "the standard of deferred payments," Let us now get a more definite understanding of that term.
As a medium of exchange, money comes to be the unit in which most prices are expressed and compared; in other words, it becomes the common denominator of prices.[7] This makes it also the most convenient unit in which to express the amount of credit transactions and of existing debts.[8] A credit transaction is a trade lengthened in time; one party fulfils his part of the contract, the other party promises to give an equivalent at a later date. The equivalent may be in any kind of goods; for example, in barter one may part with a horse on the promise of a cow to be received later; or a small horse on the promise of a large one; or a flock of sheep on the promise of its return at the end of the year with a part of the increase of the flock. A simple standard in which to express the debt is the thing borrowed, as horse, sheep, wheat, house. Again, the thing to which the value of debts is referred may be a thing quite different from the goods borrowed and, with the growth of the monetary economy and the use of the interest contract, money comes more and more to be used as the standard. At length the law declares that, in the absence of any other agreement, the amount of a debt is to be payable in terms of the unit of standard money, which thus is made legal tender as well as the customary standard of deferred payments. A standard of deferred payments is the thing of value in which, by law or by contract, the amount of a debt is expressed and payable.
§ 7. # Increasing importance of the standard.# Until the use of money develops, the use of credit is difficult and limited; it becomes easy when the value of all things is expressed in terms of a common circulating medium. It therefore generally is true that the importance of money as the standard of deferred payments increases with the use of money as a medium of trade. The volume of outstanding debts expressed in terms of money now very greatly exceeds the total value of the circulating medium. Changes in the general level of prices have, therefore, great effects upon all existing debts. The value of all debts changes in the same proportion as does that of the standard unit of money; when this rises or falls in value, it means increase or reduction, in the same ratio, of the purchasing power of every creditor. It is as if he had in his possession metal dollars equal in amount to the face of the debt, and they had changed by so much in purchasing power. The debtor's interests in such changes are, of course, just the reverse of the creditor's interests.
Outstanding contract debts may be roughly divided into two classes: short-time loans, running less than a year; and long-time loans, running for a year or more.[9] Fluctuations are rarely rapid and great enough to affect appreciably the debtors and creditors in the case of short-time loans. The results are appreciable in the case of loans running from one to five years, and may be very great in the case of loans made for still longer periods, such as the bonded indebtedness of nations, states, municipalities, and business corporations, and as mortgages given by farmers on their land or by owners of city real estate. A multitude of interests are thus affected by a change in the value of money. When money rises in purchasing power, receivers of fixed incomes are gainers. When it falls in purchasing power, they lose. Receivers of fixed incomes from loans include not merely private investors, but also many educational and charitable institutions which dispense their incomes for public purposes. Wages and salaries of many kinds go up and down less rapidly than do other prices, and thus to some extent wage-earners are in the position of passive capitalists[10] as regards changes in the monetary standard. In a capitalistic age, therefore, almost every individual is affected in some way by a change in the value of money.