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and as long as labour alone was concerned in their production, and they were brought to market immediately, it would be allowed that the different quantities of labour employed upon them would be a correct measure both of their relative value compared with each other, and of their absolute and natural value in reference to the conditions of their supply. Their natural values would be exactly represented by the different quantities of labour worked up in them; while their natural prices would be these different quantities of labour estimated in money, according to the money price of the labour employed.
But at a very early period of society a considerable interval must elapse between the exertion of some sorts of labour and the completion of the article on which they are employed. And the next simplest form of production, beyond the result of mere labour, is that, where, in addition to the labour employed directly on the commodity and on the simple tools necessary to its production, the condition of the supply requires that a certain compensation be made in the final remuneration for the time which has elapsed from the period of the advances of the labour, to the period when the labourer, or capitalist, can be remunerated. This compensa-
