Page:Principles of Political Economy Vol 2.djvu/112



§ 1. the elementary exposition of the theory of money contained in the last few chapters, we shall return to a question in the general theory of Value, which could not be satisfactorily discussed until the nature and operations of Money were in some measure understood, because the errors against which we have to contend mainly originate in a misunderstanding of those operations.

We have seen that the value of everything gravitates towards a certain medium point (which has been called the Natural Value), namely, that at which it exchanges for every other thing in the ratio of their cost of production. We have seen, too, that the actual or market value coincides, or nearly so, with the natural value, only on an average of years; and is continually either rising above, or falling below it, from alterations in the demand, or casual fluctuations in the supply: but that these variations correct themselves, through the tendency of the supply to accommodate itself to the demand which exists for the commodity at its natural value. A general convergence thus results from the balance of opposite divergences. Dearth, or scarcity, on the one hand, and over-supply, or in mercantile language, glut, on the other, are incident to all commodities. In the first case, the commodity affords to the producers or sellers, while the deficiency lasts, an unusually high rate of profit: in the second, the supply being in excess of that for which a demand exists at such a value as will afford the ordinary profit, the sellers must be content with less, and must, in extreme cases, submit to a loss.

Because this phenomenon of over-supply, and consequent