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what had been requifite for fupplying the narrow CHA P. and confined one. A market which, from requiring only one thoufand, comes to require annually ten thousand ton of fish, can seldom be fupplied without employing more than ten times the quantity of labour which had before been fufficient to fupply it. The fish muft generally be fought for at a greater diftance, larger veffels must be employed, and more extensive machinery of every kind made use of. The real price of this commodity, therefore, naturally rifes in the progrefs of improvement. It has accordingly done fo, I believe, more or lefs in every country.
Though the fuccefs of a particular day's fifhing may be a very uncertain matter, yet, the local fituation of the country being fuppofed, the general efficacy of induftry in bringing a certain quantity of fish to market, taking the courfe of a year, or of feveral years together, it may perhaps be thought, is certain enough; and it, no doubt, is fo. As it depends more, however, upon the local fituation of the country, than upon the state of its wealth and industry; as upon this account it may in different countries be the fame in very different periods of improvement, and very different in the fame period; its connection with the ftate of improvement is uncertain, and it is of this fort of uncertainty that I am here fpeaking.
In increafing the quantity of the different minerals and metals which are drawn from the bowels of the earth, that of the more precious
BOOK ones particularly, the efficacy of human industry feems 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 any thing in its local fituation, fuch as the fertility or barrennefs of its own mines. Those metals frequently abound in countries which poffefs no mines. Their quantity in every particular country feems to depend upon two different circumftances; firft, upon its power of purchafing, upon the state of its industry, upon the annual produce of its land and labour, in confequence of which it can afford to employ a greater or a fmaller quantity of labour and fubfiftence in bringing or purchafing fuch fuperfluities as gold and filver, either from its own mines or from thofe of other countries; and, fecondly, upon the fertility or barrennefs of the mines which may happen at any particular time to fupply the commercial world with those metals. The quantity of those metals in the countries moft remote from the mines, must be more or lefs affected by this fertility or barrennefs, on account of the easy and cheap transportation of thofe metals, of their small bulk and great value. Their quantity in China and Indoftan must have been more or lefs affected by the abundance of the mines of America.
So far as their quantity in any particular coun try depends upon the former of thofe two cir. cumstances (the power of purchafing), their real price, like that of all other luxuries and fuperfluities, is likely to rife with the wealth and improvement
provement of the country, and to fall with its CHA P. poverty and depreffion. Countries which have a great quantity of labour and fubfiftence to fpare, can afford to purchase any particular quantity of those metals at the expence of a greater quantity of labour and fubfiftence, than countries which have less to spare.
So far as their quantity in any particular country depends upon the latter of those two circumftances (the fertility or barrennefs of the mines which happen to fupply the commercial world), their real price, the real quantity of labour and fubfiftence which they will purchase or exchange for, will, no doubt, fink more or lefs in proportion to the fertility, and rife in proportion to the barrennefs, of those mines.
The fertility or barrennefs of the mines, however, which may happen at any particular time to fupply the commercial world, is a circumftance which, it is evident, may have no fort of connection with the state of industry in a parti cular country. It feems even to have no very neceffary connection with that of the world in general. As arts and commerce, indeed, gradually spread themfelves over a greater and a greater part of the earth, the fearch for new mines, being extended over a wider furface, may have fomewhat a better chance for being fuccessful, than when confined within narrower bounds. The discovery of new mines, however, as the old ones come to be gradually exhaufted, is a matter of the greatest uncertainty, and fuch as no human skill or industry can enfure. All indi.
BOOK indications, it is acknowledged, are doubtful, and the actual discovery and fuccessful working of a new mine can alone afcertain the reality of its value, or even of its existence. In this fearch there feem to be no certain limits either to the poffible fuccefs, or to the poffible disappointment of human industry. In the course of a century or two, it is poffible that new mines may be discovered more fertile than any that have ever yet been known; and it is juft equally poffible that the moft fertile mine then known may be more barren than any that was wrought before the discovery of the mines of America. Whether the one or the other of those two events may happen to take place, is of very little importance to the real wealth and profperity of the world, to the real value of the annual produce of the land and labour of mankind. Its nominal value, the quantity of gold and filver by which this annual produce could be expreffed or reprefented, would, no doubt, be very different; but its real value, the real quantity of labour which it could purchase or command, would be precifely the fame. A fhilling might in the one cafe represent no more labour than a penny does at prefent; and a penny in the other might reprefent as much as a fhilling does now. But in the one cafe he who had a fhilling in his pocket, would be no richer than he who has a penny at prefent; and in the other, he who had a penny would be just as rich as he who has a filling now. The cheapnefs and abundance of gold and filver plate, would be the fole advantage
which the world could derive from the one event, C H A P. and the dearness and fcarcity of those trifling fuperfluities the only inconveniency it could fuffer from the other.
Conclufion of the Digreffion concerning the Variations in the