of money,—depend on the metamorphic process which takes place in the world of commodities, and that again depends on the general character of the methods of production, the size of population, the relation between city and country, the development of the means of transportation, the greater or less division of labor, credit, etc.; in short, on circumstances all of which lie outside of the sphere of simple circulation of money and are only reflected in it.
The rapidity of circulation being given, the volume of currency is simply determined by the prices of commodities. Hence, prices are not high or low, because there is more or less money in circulation, but on the contrary, there is more or less money in circulation, because prices are high or low. This is one of the most important laws, whose demonstration in detail by means of the history of prices constitutes perhaps the only merit of the post-Ricardian English Political Economy. If experience shows, that the level of metallic circulation or the mass of gold and silver in circulation in a given country is subject to temporary ebbs and tides and very violent ones at times,75 but on the whole remains stationary for long periods, the deviations forming but small oscillations about the average level, this is explained by the antagonistic nature of the circumstances which determine the quantity of money in circulation. Their simultaneous modifications neutralize their effects and leave everything where it was before.