division of labor, it is false to maintain that division of labor implies private exchange. Among the Peruvians, e. g., labor was divided to an extraordinary extent, although there was no private exchange, no exchange of products, as commodities. Contrary to Adam Smith, David Ricardo elaborated with great clearness the determination of the value of a commodity by labor-time and showed that this law governs also such relations of capitalistic production which seem to contradict it most. Ricardo confines his investigations exclusively to the _quantitative determination of value_ and as regards the latter he is at least conscious of the fact that the realization of the law depends upon certain historical conditions. He says, namely, that the determination of value by labor-time holds good for commodities “only as can be increased in quantity by the exertion of human industry, and on the production of which competition operates without restraint.”[34] What he really means is that the law of value presupposes for its full development an industrial society in which production is carried on a large scale and free competition prevails, i. e. the modern capitalist society. In all other respects, Ricardo considers the capitalist form of labor as the eternal natural form of social labor. He makes the primitive fisherman and the primitive hunter straightway exchange their fish and game as owners of commodities, in proportion to the labor-time embodied in these exchange values. On this occasion he commits the anachronism of making the primitive fisherman and primitive hunter consult the annuity tables in current use on the London Exchange in the year 1817 in the calculation relating to their instruments. The “parallelograms of Mr. Owen” seem to be the only form of society outside of the bourgeois form with which he was acquainted. Although confined within this bourgeois horizon, Ricardo analyzes the bourgeois economy―which looks quite different to deeper insight than it does on the surface―with such keen power of theoretical penetration that Lord Brougham could say of him: “Mr. Ricardo seemed as if he had dropped from another planet.” In a direct controversy with Ricardo, Sismondi lays stress upon the specifically social character of labor which creates exchange value,[35] and says it is “characteristic of our economic progress” to reduce the magnitude of value to the _necessary_ labor-time, to the relation between the demand of society as a whole and the quantity of labor which is sufficient to satisfy this demand.[36] Sismondi is no more laboring under Boisguillebert’s idea, that labor which creates exchange value is adulterated by money; but just as Boisguillebert denounced money, so does Sismondi denounce large industrial capital. In Ricardo political economy reached its climax, after recklessly drawing its ultimate conclusions, while Sismondi supplemented it by impersonating its doubts.