The Wealth of Nations

to market, it is likewise both limited and uncertain. It is limited by the local situation of the country, by the proximity or distance of its different provinces from the sea, by the number of its lakes and rivers, and by what may be called the fertility or barrenness of those seas, lakes and rivers, as to this sort of rude produce. As population increases, as the annual produce of the land and labour of the country grows greater and greater, there come to be more buyers of fish, and those buyers too have a greater quantity and variety of other goods, or, what is the same thing, the price of a greater quantity and variety of other goods, to buy with. But it will generally be impossible to supply the great and extended market without employing a quantity of labour greater than in proportion to what had been requisite for supplying the narrow and confined one. A market which, from requiring only one thousand, comes to require annually ten thousand ton of fish, can seldom be supplied without employing more than ten times the quantity of labour which had before been sufficient to supply it. The fish must generally be sought for at a greater distance, larger vessels must be employed, and more expensive machinery of every kind made use of. The real price of this commodity, therefore, naturally rises in the progress of improvement. It has accordingly done so, I believe, more or less in every country.

Though the success of a particular day’s fishing may be a very uncertain matter, yet, the local situation of the country being supposed, the general efficacy of industry in bringing a certain quantity of fish to market, taking the course of a year, or of several years together, it may perhaps be thought, is certain enough; and it, no doubt, is so. As it depends more, however, upon the local situation of the country, than upon the state of its wealth and industry; as upon this account it may in different countries be the same in very different periods of improvement, and very different in the same period; its connection with the state of improvement is uncertain, and it is of this sort of uncertainty that I am here speaking.

In increasing the quantity of the different minerals and metals which are drawn from the bowels of the earth, that of the more precious ones particularly, the efficacy of human industry seems not to be limited, but to be altogether uncertain.

The quantity of the precious metals which is to be found in any country is not limited by anything in its local situation, such as the fertility or barrenness of its own mines. Those metals frequently abound in countries which possess no mines. Their quantity in every particular country seems to depend upon two different circumstances; first, upon its power of purchasing, upon the state of its industry, upon the annual produce of its land and labour, in consequence of which it can afford to employ a greater or a smaller quantity of labour and subsistence in bringing or purchasing such superfluities as gold and silver, either from its own mines or from those of other countries; and, secondly, upon the fertility or barrenness of the mines which may happen at any particular time to supply the commercial world with those metals. The quantity of those metals in the countries most remote from the mines, must be more or less affected by this fertility or barrenness, on account of the easy and cheap transportation of those metals, of their small bulk and great value. Their quantity in China and Indostan must have been more or less affected by the abundance of the mines of America.

So far as their quantity in any particular country depends upon the former of those two circumstances (the power of purchasing), their real price, like that of all other luxuries and superfluities, is likely to rise with the wealth and improvement of the country, and to fall with its poverty and depression. Countries which have a great quantity of labour and subsistence to spare, can afford to purchase any particular quantity of those metals at the expense of a greater quantity of labour and subsistence, than countries which have less to spare.

So far as their quantity in any particular country depends upon the latter of those two circumstances (the fertility or barrenness of the mines which happen to supply the commercial world) their real price, the real quantity of labour and subsistence which they will purchase or exchange for, will, no doubt, sink more or less in proportion to the fertility, and rise in proportion to the barrenness, of those mines.

The fertility or barrenness of the mines, however, which may happen at any particular time to supply the commercial world, is a circumstance which, it is evident, may have no sort of connection with the state of industry in a particular country. It seems even to have no very necessary connection with that of the world in general. As arts and commerce, indeed, gradually spread themselves over a greater and a greater part of the earth, the search for new mines, being extended over a wider surface, may have somewhat a better chance for being successful, than when confined within narrower bounds. The discovery of new mines, however, as the old ones come to be gradually exhausted, is a matter of the greatest uncertainty, and such as no human skill or industry can ensure. All indications, it is acknowledged, are doubtful, and the actual discovery and successful working of a new mine can alone ascertain the reality of its value, or even of its existence. In this search there seem to be no certain limits either to the possible success, or to the possible disappointment of human industry. In the course of a century or two, it is possible that new mines may be discovered more fertile than any that have ever yet been known; and it is just