The Wealth of Nations

in such times purchase or represent a greater quantity of labour, but because514 such commodities would purchase or represent a much smaller quantity than in times of more opulence and improvement. Silver must certainly be cheaper in Spanish America than in Europe; in the country where it is produced, than in the country to which it is brought, at the expense of a long carriage both by land and by sea, of a freight and an insurance. One-and-twenty pence halfpenny sterling, however, we are told by Ulloa, was, not many years ago, at Buenos Aires, the price of an ox chosen from a herd of three or four hundred.515 Sixteen shillings sterling, we are told by Mr. Byron, was the price of a good horse in the capital of Chile.516 In a country naturally fertile, but of which the far greater part is altogether uncultivated, cattle, poultry, game of all kinds, etc. as they can be acquired with a very small quantity of labour, so they will purchase or command but a very small quantity. The low money price for which they may be sold, is no proof that the real value of silver is there very high, but that the real value of those commodities is very low.

Labour, it must always be remembered, and not any particular commodity or set of commodities, is the real measure of the value both of silver and of all other commodities.

But in countries almost waste, or but thinly inhabited, cattle, poultry, game of all kinds, etc. as they are the spontaneous productions of nature, so she frequently produces them in much greater quantities than the consumption of the inhabitants requires. In such a state of things the supply commonly exceeds the demand. In different states of society, in different stages of improvement, therefore, such commodities will represent, or be equivalent to, very different quantities of labour.

In every state of society, in every stage of improvement, corn is the production of human industry. But the average produce of every sort of industry is always suited, more or less exactly, to the average consumption; the average supply to the average demand. In every different stage of improvement, besides, the raising of equal quantities of corn in the same soil and climate, will, at an average, require nearly equal quantities of labour; or what comes to the same thing, the price of nearly equal quantities; the continual increase of the productive powers of labour in an improving517 state of cultivation being more or less counterbalanced by the continually increasing price of cattle, the principal instruments of agriculture. Upon all these accounts, therefore, we may rest assured, that equal quantities of corn will, in every state of society, in every stage of improvement, more nearly represent, or be equivalent to, equal quantities of labour, than equal quantities of any other part of the rude produce of land. Corn, accordingly, it has already been observed,518 is, in all the different stages of wealth and improvement, a more accurate measure of value than any other commodity or set of commodities. In all those different stages, therefore, we can judge better of the real value of silver, by comparing it with corn, than by comparing it with any other commodity, or set of commodities.

Corn, besides, or whatever else is the common and favourite vegetable food of the people, constitutes, in every civilized country, the principal part of the subsistence of the labourer. In consequence of the extension of agriculture, the land of every country produces a much greater quantity of vegetable than of animal food, and the labourer everywhere lives chiefly upon the wholesome food that is cheapest and most abundant. Butcher’s-meat, except in the most thriving countries, or where labour is most highly rewarded, makes but an insignificant part of his subsistence; poultry makes a still smaller part of it, and game no part of it. In France, and even in Scotland, where labour is somewhat better rewarded than in France, the labouring poor seldom eat butcher’s-meat, except upon holidays, and other extraordinary occasions. The money price of labour, therefore, depends much more upon the average money price of corn, the subsistence of the labourer, than upon that of butcher’s-meat, or of any other part of the rude produce of land. The real value of gold and silver, therefore, the real quantity of labour which they can purchase or command, depends much more upon the quantity of corn which they can purchase or command, than upon that of butcher’s-meat, or any other part of the rude produce of land.

Such slight observations, however, upon the prices either of corn or of other commodities, would not probably have misled so many intelligent authors, had they not been influenced, at the same time, by the popular notion,519 that as the quantity of silver naturally increases in every country with the increase of wealth, so its value diminishes as its quantity increases. This notion, however, seems to be altogether groundless.

The quantity of the precious metals may increase in any country from two different causes: either, first, from the increased abundance of the mines which supply it; or, secondly, from the increased wealth of the people, from the increased produce of their annual labour. The first of these causes is no doubt necessarily connected with the diminution of the value of the precious metals; but the second is not.

When more abundant mines are discovered, a greater quantity of the precious metals is brought to market, and the quantity of the necessaries and conveniencies of life for which they must be exchanged being the same as before, equal quantities of the metals must be exchanged for smaller quantities of commodities. So far, therefore, as the increase of the quantity of the precious metals in any country arises from the increased abundance of the mines, it is necessarily connected with some diminution of their value.

When, on the contrary,