OF LABOUR AS AN AGENT OF PRODUCTION.
§ 1.The labour which terminates in the production of an article fitted for some human use, is either employed directly about the thing, or in previous operations destined to facilitate, perhaps essential to the possibility of, the subsequent ones. In making bread, for example, the labour employed about the thing itself is that of the baker; but the labour of the miller, though employed directly in the production not of bread but of flour, is equally part of the aggregate sum of labour by which the bread is produced; as is also the labour of the sower and of the reaper. Some may think that all these persons ought to be considered as employing their labour directly about the thing; the corn, the flour, and the bread being one substance in three different states. Without disputing about this question of mere language, there is still the ploughman, who prepared the ground for the seed, and whose labour never came in contact with the substance in any of its states; and the plough-maker, whose share in the result was still more remote. All these persons ultimately derive the remuneration of their labour from the bread, or its price: the plough-maker as much as the rest; for since ploughs are of no use except for tilling the soil, no one would make or use ploughs for any other reason than because the increased returns, thereby obtained from the ground, afforded a source from which an adequate equivalent could be assigned for the labour of the plough-maker. If the produce is to be used or consumed in the form of bread, it is from the bread that this equivalent must come. The bread must suffice to remunerate all these labourers, and several others; such as the carpenters and bricklayers who