Owing to the extensive use of machinery and to division of labor, the work of the proletarians has lost all individual character, and, consequently, all charm for the workman. He becomes an appendage of the machine, and it is only the most simple, most monotonous, and most easily acquired knack, that is required of him. Hence, the cost of production of a workman is restricted almost entirely to the means of subsistence that he requires for his maintenance, and for the propagation of his race. But the price of a commodity, and therefore also of labor, is equal, in the long run, to its cost of production. In proportion, therefore, as the repulsiveness of the work increases, the wage decreases. Nay, more, in proportion as the use of machinery and division of labor increase, in the same proportion the burden of toil also increases, whether by prolongation of the working hours, by increase of the work exacted in a given time, or by increased speed of the machinery, etc.