on the continent after the Peace of Paris. The consumption increased with the general growth of wealth.100 It may be stated as a general law that the conversion of gold and silver money into articles of luxury prevails in times of peace, while their reconversion into bullion or even coin takes place in stormy periods.101 How considerable the proportion is of the gold and silver treasure in the form of articles of luxury to the quantity of precious metals serving as money may be seen from the fact that in 1829 the proportion in England, according to Jacob, was two to one, and in entire Europe and America the precious metals in the form of articles of luxury exceeded those in the form of money by one-fourth.
We have seen that the circulation of money is but the manifestation of the metamorphoses of commodities, or of the form under which the social interchange of matter takes place. With the change in the total price of commodities in circulation or in the volume of their simultaneous metamorphoses, the rapidity of their change of form in each case being given, the total quantity of gold in circulation must always expand or contract. That is possible only under the condition that the total quantity of money in the country continually bear a varying ratio to the quantity of money in circulation. This condition is met by the process of hoarding. With a fall in prices or rise in the rapidity of circulation, the hoard-reservoirs absorb that part of money which is thrown out of circulation; with a rise in price or a decline in the rapidity of circulation, the hoards open up and return a part of their contents to the stream of circulation. The solidification of circulating money into hoards and the outpouring of hoards into circulation is a constantly oscillating movement in which the prevalence of the one or the other tendency is determined exclusively by fluctuations in the circulation of commodities. Hoards thus serve as conduits for the supply and withdrawal of money to or from circulation, so that every time only that quantity of money circulates as coin which is required by the immediate needs of circulation. If the volume of the entire circulation suddenly expands and the fluent unity of sale and purchase assumes such