The Theory of Money and Credit - Ludwig von Mises [172]
which do not concern our present problem, the two rates need not coincide exactly. When, he says, from any cause whatever, the average rate of interest is below this normal rate, by any amount, however small, and remains at this level, a progressive and eventually enormous rise of prices must occur "which would naturally cause the banks sooner or later to raise their rates of interest." [16] Now, so far as the rise of prices is concerned, this may be provisionally conceded. But it still remains inconceivable why a general rise in commodity prices should induce the banks to raise their rates of interest. It is clear that there may be a motive for this in the regulations, whether legislative or established by mercantile custom, that limit the circulation of fiduciary media; or necessary consideration of the procedure of other banks might have the same sort of effect. But if we start with the assumption, as Wicksell does, that only fiduciary media are in circulation and that the quantity of them is not legislatively restricted, so that the banks are entirely free to extend their issues of them, then it is impossible to see why rising prices and an increasing demand for loans should induce them to raise the rate of interest they charge for loans. Even Wicksell can think of no other reason for this than that since the requirements of business for gold coins and banknotes becomes greater as the price level rises, the banks do not receive back the whole of the sums they have lent, part of them remaining in the hands of the public; and that the bank reserves are consequently depleted while the total liabilities of the banks increase; and that this must naturally induce them to raise their rate of interest. [17] But in this argument Wicksell contradicts the assumption that he takes as the starting point of his investigation. Consideration of the level of its cash reserves and their relation to the liabilities arising from the issue of fiduciary media cannot concern the hypothetical bank that he describes. He seems suddenly to have forgotten his original assumption of a circulation consisting exclusively of fiduciary media, on which assumption, at first, he rightly laid great weight.
Wicksell incidentally makes cursory mention of a second limit to the circulation of fiduciary media. He thinks that the banks that charge a lower rate of interest than that which corresponds to the average level of the natural rate of interest encounter a limit which is set by the employment of the precious metals for industrial purposes. If the purchasing power of money is too low it discourages the production of gold but increases, ceteris paribus, the industrial consumption of gold, and the deficiency which would arise as soon as consumption began to exceed production has to be made up from the bank reserves. [18] This is perfectly true when metallic money is employed; an increase of fiduciary media must be stopped before the reduction of the objective exchange value of money that it brings about absorbs the value arising from the monetary employment of the metal. As soon as the objective exchange value of money had sunk below the value of the metal in industrial uses, every further loss in value (which, of course, would also affect the purchasing power of the money substitutes in the same degree), would send all those who needed the metal for industrial purposes to the counters of the banks as their cheapest source of supply. The banks would not be able to extend their issue any further since it would be possible for their customers to make a profit simply by the exchange of fiduciary media for money; all fiduciary media issued beyond the given limit would return immediately to the banks. [19]
But demonstrating this does not bring us a step nearer to the solution of our problem. The mechanism, by which a further issue of fiduciary media is restricted as soon as the falling objective exchange value of the material from which the money is made has reached the level set by its industrial employment, is, of course, effective only in the case of commodity