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equivalent of five sovereigns, would be worth five sovereigns. But five sovereigns, or the quantity of gold contained in them, having come to be worth in England 61., it follows that a bill on France for 51., will be worth 61. When, therefore, the real exchange is at par, there will be a nominal exchange against the country, of as much per cent as the amount of the depreciation. If the currency is depreciated 10, 15, or 20 per cent, then in whatever way the real exchange, arising from the variations of international debts and credits, may vary, the quoted exchange will always differ 10, 15, or 20 per cent from it. However high this nominal premium may be, it has no tendency to send gold out of the country, for the purpose of drawing a bill against it and profiting by the premium ; because the gold so sent must be procured, not from the banks and at par, as in the case of a convertible currency, but in the market, at an advance of price equal to the premium. In such cases, instead of saying that the exchange is unfavourable, it would be a more correct representation to say that the par has altered, since there is now required a larger quantity of English currency to be equivalent to the same quantity of foreign. The exchanges, however, continue to be computed according to the metallic par.
The quoted exchanges, therefore, when there is a depreciated currency, are compounded of two elements or factors; the real exchange, which follows the variations of international payments, and the nominal exchange, which varies with the depreciation of the currency, but which, while there is any. depreciation at all, must always be unfavourable. Since the amount of depreciation is exactly measured by the degree in which the market price of bullion exceeds the mint valuation, we have a sure criterion to determine what portion of the quoted exchange, being referable to depreciation, may be struck off as nominal; the result so corrected expressing the real exchange.
The same disturbance of the exchanges and of international trade, which is produced by an increased issue of con
vertible bank notes, is in like manner produced by those extensions of credit, which, as was so fully shown in a preceding chapter, have the same effect on prices as an increase of the currency. Whenever circumstances have given such an impulse to the spirit of speculation as to occasion a great increase of purchases on credit, money prices rise, just as much as they would have risen if each person who so buys on credit had bought with money. All the effects, therefore, must be similar. As a consequence of high prices, exportation is checked and importation stimulated ; though in fact the increase of importation seldom waits for the rise of prices which is the consequence of speculation, inasmuch as some of the great articles of import are usually among the things in which speculative overtrading first shows itself. There is, therefore, in such periods, usually a great excess of imports over exports; and when the time comes at which these must be paid for, the exchanges become unfavourable, and gold flows out of the country. In what precise manner this efflux of gold takes effect on prices, depends on circumstances of which we shall presently speak more fully; but that its effect is to make them recoil downwards, is certain and evident. The recoil, once begun, generally becomes a total rout, and the unusual extension of credit is rapidly exchanged for an unusual contraction of it. Accordingly, when credit has been imprudently stretched, and the speculative spirit carried to excess, the turn of the exchanges, and consequent pressure on the banks to obtain gold for exportation, are generally the proximate cause of the catastrophe. But these phenomena, though a conspicuous accompaniment, are no essential part, of the collapse of credit called a commercial crisis ; which, as we formerly showed,* might happen to as great an extent, and is quite as likely to happen, in a country, if any such there were, altogether destitute of foreign trade.
Supra, pp. 54-6.
OF THE RATE OF INTEREST.
§ 1. THE present seems the most proper place for discussing the circumstances which determine the rate of interest. The interest of loans, being really a question of exchange value, falls naturally into the present division of our subject : and the two topics of Currency and Loans, though in themselves distinct, are so intimately blended in the phenomena of what is called the money market, that it is impossible to understand the one without the other, and in many minds the two subjects are mixed up in the most inextricable confusion.
In the preceding Book* we defined the relation in which interest stands to profit. We found that the gross profit of capital might be distinguished into three parts, which are respectively the remuneration for risk, for trouble, and for the capital itself, and may be termed insurance, wages of superintendence, and interest. After making compensation for risk, that is, after covering the average losses to which capital is exposed either by the general circumstances of society or by the hazards of the particular employment, there remains surplus, which partly goes to repay the owner of the capital for his abstinence, and partly the employer of it for his time and trouble. How much goes to the one and how much to the other, is shown by the amount of the remuneration which, when the two functions are separated, the owner of capital can obtain from the employer for its use. This is evidently a question of demand and supply. Nor have demand and supply any different meaning or effect in this case from what they have in all others. The rate of interest will be
Supra, book ii, ch. xv. § 1.
such as to equalize the demand for loans with the supply of them. It will be such, that exactly as much as some people are desirous to borrow at that rate, others shall be willing to lend. If there is more offered than demanded, interest will
if more is demanded than offered, it will rise ; and in both cases, to the point at which the equation of supply and demand is re-established.
Both the demand and supply of loans fluctuate more incessantly than any other demand or supply whatsoever. The fluctuations in other things depend on a limited number of influencing circumstances; but the desire to borrow, and the willingness to lend, are more or less influenced by every circumstance which affects the state or prospects of industry or commerce, either generally or in any of their branches. The rate of interest, therefore, on good security, which alone we have here to consider (for interest in which considerations of risk bear a part may swell to any amount) is seldom, in the great centres of money transactions, precisely the same for two days together; as is shown by the never-ceasing variations in the quoted prices of the funds and other negotiable securities. Nevertheless, there must be, as in other cases of value, some rate which in the language of Adam Smith and Ricardo) may be called the natural rate; some rate about which the market rate oscillates, and to which it always tends to return. This rate partly depends on the amount of accumulation going on in the hands of persons who cannot themselves attend to the employment of their savings, and partly on the comparative taste existing in the community for the active pursuits of industry, or for the leisure, ease, and independence of an annuitant.
§ 2. To exclude casual fluctuations, we will suppose commerce to be in a quiescent condition, no employment being unusually prosperous, and none particularly distressed. In these circumstances, the more thriving producers and traders have their capital fully employed, and many are able
to transact business to a considerably greater extent than they have capital for. These are naturally borrowers: and the amount which they desire to borrow, and can give security for, constitutes the demand for loans on account of productive employment. To these must be added the loans required by Government, and by landowners, or other unproductive consumers who have good security to give. This constitutes the mass of loans for which there is an habitual demand.
Now it is conceivable that there might exist, in the hands of persons disinclined or disqualified for engaging personally in business, a mass of capital equal to, and even exceeding, this demand. In that case there would be an habitual excess of competition on the part of lenders, and the rate of interest would bear a low proportion to the rate of profit. Interest would be forced down to the point which would either tempt borrowers to take a greater amount of loans than they had a reasonable expectation of being able to employ in their business, or would so discourage a portion of the lenders, as to make them either forbear to accumulate, or endeavour to increase their income by engaging in business on their own account, and incurring the risks, if not the labours, of industrial employment.
On the other hand, the capital owned by persons who prefer lending it at interest, or whose avocations prevent them from personally superintending its employment, may be short of the habitual demand for loans. It may be in great part absorbed by the investments afforded by the public debt and by mortgages, and the remainder may not be sufficient to supply the wants of commerce. If so, the rate of interest will be raised so high as in some way to reestablish the equilibrium. When there is only a small difference between interest and profit, many borrowers may no longer be willing to increase their responsibilities and involve their credit for so small a remuneration : or some who would otherwise have engaged in business, may prefer leisure, and