forerunner and attendant of the greatest of all public advantages.
This rise, too, in the nominal or money price of all those different sorts of rude produce, has been the effect, not of any degradation in the value of silver, but of a rise in their real price. They have become worth, not only a greater quantity of silver, but a greater quantity of labour and subsistence than before. As it costs a greater quantity of labour and subsistence to bring them to market, so, when they are brought thither they represent, or are equivalent to a greater quantity.
Third Sort.—The third and last sort of rude produce, of which the price naturally rises in the progress of improvement, is that in which the efficacy of human industry, in augmenting the quantity, is either limited or uncertain. Though the real price of this sort of rude produce, therefore, naturally tends to rise in the progress of improvement, yet, according as different accidents happen to render the efforts of human industry more or less successful in augmenting the quantity, it may happen sometimes even to fall, sometimes to continue the same, in very different periods of improvement, and sometimes to rise more or less in the same period.