above or falls below its required level, it is forcibly reduced to the latter by a fall or rise of prices. In either case the same effect seems to be brought about by the same cause, and Hume holds fast to this semblance.
Every scientific inquiry into the relation between the volume of the circulating medium and the movement of prices must assume the value of the money material as given. Hume, on the contrary, considers exclusively periods of revolution in the value of the precious metals, i. e. revolutions in the measure of value. The rise of prices which occurred simultaneously with the increase of metallic money after the discovery of the American mines forms the historical background of his theory, while his polemic against the monetary and mercantile system furnishes its practical motive. The importation of precious metals can naturally increase while their cost of production remains the same. On the other hand, a decrease in their value, i. e. in the labor-time required for their production will reveal itself first of all in their increased imports. Hence, said the later followers of Hume, a decrease in the value of the precious metals, reveals itself in an increased volume of the circulating medium, and the increased volume of the latter is shown in the rise of prices. As a matter of fact, however, the rise in price affects only exported commodities, which are exchanged for gold and silver as commodities and not as mediums of circulation. Thus, the prices of these commodities, which are now estimated in gold and silver of lower value, rise as compared with the prices of all other commodities whose exchange value continues
