by the number which expresses the rapidity of circulation.
The phrase, rapidity of circulation, requires some comment. It must not be understood to mean, the number of purchases made by each piece of money in a given time. Time is not the thing to be considered. The state of society may be such, that each piece of money hardly performs more than one purchase in a year; but if this arises from the small number of transactions—from the small amount of business done, the want of activity in traffic, or because what traffic there is, mostly takes place by barter—it constitutes no reason why prices should be lower, or the value of money higher. The essential point is, not how often the same money changes hands in a given time, but how often it changes hands in order to perform a given amount of traffic. We must compare the number of purchases made by the money in a given time, not with the time itself, but with the goods sold in that same time. If each piece of money changes hands on an average ten times while goods are sold to the value of a million sterling, it is evident that the money required to circulate those goods is 100,000l. And conversely, if the money in circulation is 100,000l., and each piece changes hands by the purchase of goods ten times in a month, the sales of goods for money which take place every month must amount on the average to 1,000,000l.
Rapidity of circulation being a phrase so ill adapted to express the only thing which it is of any importance to express by it, and having a tendency to confuse the subject by suggesting a meaning extremely different from the one intended, it would be a good thing if the phrase could be got rid of, and another substituted, more directly significant of the idea meant to be conveyed. Some such expression as "the efficiency of money," though not unexceptionable, would do better; as it would point attention to the quantity of work done, without suggesting the idea of estimating it by time. Until an appropriate term can be devised, we must be content
