Page:Contribution to the Critique of Political Economy, A - Karl Marx.djvu/216

Rh materially as well. Gold and silver possess these properties to a superior degree. As mediums of circulation, gold and silver have this advantage over other commodities, that their high specific gravity which condenses much weight in little space, corresponds to their economic specific gravity which condenses relatively much labor-time, i. e. a great quantity of exchange value in a small volume. This insures facility of transport, of transition from hand to hand and from one country to another, the ability to appear as rapidly as to disappear, in short, that material mobility which constitutes the sine qua non of the commodity that is to serve as the perpetuum mobile of the process of circulation.

The high specific value of the precious metals, their durability, comparative indestructibility, insusceptibility of oxidation through the action of the air, in the case of gold insolubility in acids except in aqua regia,—all these natural properties make the precious metals the natural material for hoarding. Peter Martyr who seems to have been a great lover of chocolate, remarks, therefore, of the cacao-bags which formed a species of Mexican gold: "O felicem monetam, quae suavem utilemque praebet humano generi potum, et a tartarea peste avaritiae suos immunes servat possessores, quod suffodi aut diu servari nequeat."