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before, it will not from thence follow that silver has become really cheaper, or will purchase less labour
than before, but that such commodities have become really dearer, or will purchase more labour than
before. It is not their nominal price only, but their real price which rises in the progress of improvement.
The rise of their nominal price is the effect, not of any degradation of the value of silver, but of the rise
in their real price.
DIFFERENT EFFECTS OF THE PROGRESS OF IMPROVEMENT UPON THREE DIFFERENT SORTS
OF RUDE PRODUCEThese different sorts of rude produce may be divided into three classes. The first comprehends those
which it is scarce in the power of human industry to multiply at all. The second, those which it can multiply
in proportion to the demand. The third, those in which the efficacy of industry is either limited or uncertain.
In the progress of wealth and improvement, the real price of the first may rise to any degree of extravagance,
and seems not to be limited by any certain boundary. That of the second, though it may rise greatly,
has, however, a certain boundary beyond which it cannot well pass for any considerable time together.
That of the third, though its natural tendency is to rise in the progress of improvement, yet in the same
degree of improvement it may sometimes happen even to fall, sometimes to continue the same, and
sometimes to rise more or less, according as different accidents render the efforts of human industry,
in multiplying this sort of rude produce, more or less successful.
FIRST SORTThe first sort of rude produce of which the price rises in the progress of improvement is
that which it is scarce in the power of human industry to multiply at all. It consists in those things which
nature produces only in certain quantities, and which, being of a very perishable nature, it is impossible
to accumulate together the produce of many different seasons. Such are the greater part of rare and
singular birds and fishes, many different sorts of game, almost all wild-fowl, all birds of passage in particular,
as well as many other things. When wealth and the luxury which accompanies it increase, the demand
for these is likely to increase with them, and no effort of human industry may be able to increase the
supply much beyond what it was before this increase of the demand. The quantity of such commodities,
therefore, remaining the same, or nearly the same, while the competition to purchase them is continually
increasing, their price may rise to any degree of extravagance, and seems not to be limited by any certain
boundary. If woodcocks should become so fashionable as to sell for twenty guineas apiece, no effort of
human industry could increase the number of those brought to market much beyond what it is at present.
The high price paid by the Romans, in the time of their greatest grandeur, for rare birds and fishes, may
in this manner easily be accounted for. These prices were not the effects of the low value of silver in
those times, but of the high value of such rarities and curiosities as human industry could not multiply
at pleasure. The real value of silver was higher at Rome, for some time before and after the fall of the
republic, than it is through the greater part of Europe at present. Three sestertii, equal to about sixpence
sterling, was the price which the republic paid for the modius or peck of the tithe wheat of Sicily. This
price, however, was probably below the average market price, the obligation to deliver their wheat at this
rate being considered as a tax upon the Sicilian farmers. When the Romans, therefore, had occasion
to order more corn than the tithe of wheat amounted to, they were bound by capitulation to pay for the
surplus at the rate of four sestertii, or eightpence sterling, the peck; and this had probably been reckoned
the moderate and reasonable, that is, the ordinary or average contract price of those times; it is equal to
about one-and-twenty shillings the quarter. Eight-and-twenty shillings the quarter was, before the late
years of scarcity, the ordinary contract price of English wheat, which in quality is inferior to the Sicilian,
and generally sells for a lower price in the European market. The value of silver, therefore, in those
ancient times, must have been to its value in the present as three to four inversely; that is, three ounces
of silver would then have purchased the same quantity of labour and commodities which four ounces will
do at present. When we read in Pliny, therefore, that Seius bought a white nightingale, as a present for
the Empress Agrippina, at a price of six thousand sestertii, equal to about fifty pounds of our present
money; and that Asinius Celer purchased a surmullet at the price of eight thousand sestertii, equal to
about sixty-six pounds thirteen shillings and fourpence of our present money, the extravagance of those
prices, how much soever it may surprise us, is apt, notwithstanding, to appear to us about one-third
less than it really was. Their real price, the quantity of labour and subsistence which was given away
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