It is impossible here to enter upon a complete critical discussion of the practicability of the capitalist normal working-day, as conceived by Rodbertus; but I may be allowed in passing to indicate one or two points of criticism. I maintain my opinion expressed above, that the cost of production in terms of normal labour is not the only factor to be considered in the valuation of products and the regulation of wages; hence, I still claim that the social measure of value in terms of the cost of production cannot be applied to labour products or to labour contributions without reference to the rise and fall of their value in use. Should, however, the State eventually interfere in the regulation of wages and prices, then I allow that the normal working-day of Rodbertus would become of importance to us for that purpose. For the rest, I hold that it has by no means been proved that such an exercise of interference could succeed even under a monarchical government based on private property, far less under a democratic government with a socialistic system of ownership. Neither do I regard it as proved that this method of State normalisation would actually achieve the establishment of a more normal state of affairs than can be arrived at in a social system where freely organised self-help is the rule, _i.e._ where both classes, Capital and Labour, can combine freely among themselves within the limits of a positive code safeguarding the rights of the workers. The direction taken by modern industrial life towards the harmonious conciliation of both classes, by means of the wage-list, the wage-tariff, and the sliding scale with a fixed minimum wage for entire branches of industry, and so forth, promises an important advance towards the establishment of a more normal wage-system. In considering the question of the working-day as an instrument for affecting wages, it will be found that on the whole perhaps as much, or even more, may be achieved (and with fewer countervailing disadvantages) by the maximum working-day of free contract, varying according to trade, than by the normal working-day in the narrow meaning which Rodbertus has given to the term.