Front Page Titles (by Subject) A Store of Value. - Money and the Mechanism of Exchange
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A Store of Value. - William Stanley Jevons, Money and the Mechanism of Exchange 
Money and the Mechanism of Exchange (New York: D. Appleton and Co. 1876).
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A Store of Value.
It is worthy of inquiry whether money does not also serve a fourth distinct purpose—that of embodying value in a convenient form for conveyance to distant places. Money, when acting as a medium of exchange, circulates backwards and forwards near the same spot, and may sometimes return to the same hands again and again. It subdivides and distributes property, and lubricates the action of exchange. But at times a person needs to condense his property into the smallest compass, so that he may hoard it away for a time, or carry it with him on a long journey, or transmit it to a friend in a distant country. Something which is very valuable, although of little bulk and weight, and which will be recognised as very valuable in every part of the world, is necessary for this purpose. The current money of a country is perhaps more likely to fulfil these conditions than anything else, although diamonds and other precious stones, and articles of exceptional beauty and rarity, might occasionally be employed.
The use of esteemed articles as a store or medium for conveying value may in some cases precede their employment as currency. Mr. Gladstone states that in the Homeric poems gold is mentioned as being hoarded and treasured up, and as being occasionally used in the payment of services, before it became the common measure of value, oxen being then used for the latter purpose. Historically speaking, such a generally esteemed substance as gold seems to have served, firstly, as a commodity valuable for ornamental purposes; secondly, as stored wealth; thirdly, as a medium of exchange; and, lastly, as a measure of value.