Page:Contribution to the Critique of Political Economy, A - Karl Marx.djvu/143

Rh and very violent ones at times, 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.

The law, that with a given rapidity of circulation of money and a given total sum of prices of commodities the quantity of the circulating medium is determined, may also be expressed as follows. If the exchange values of commodities and the average rapidity of their metamorphoses are given, the quantity of gold in circulation depends on its own value. If, therefore, the value of gold, i. e. the labor-time necessary for its production, should rise or fall, the prices of commodities will rise