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192 daily in labour-power half a day's average social labour, in other words, half a day's labour is requisite for the daily production of labour-power. This quantity of labour forms the value of a day's labour-power or the value of the labour-power daily reproduced. If half a day's average social labour is incorporated in three shillings, then three shillings is the price corresponding to the value of a day's labour-power. If its owner therefore offers it for sale at three shillings a day, its selling price is equal to its value, and according to our supposition, our friend Moneybags, who is intent upon converting his three shillings into capital, pays this value.

The minimum limit of the value of labour-power is determined by the value of the commodities, without the daily supply of which the labourer cannot renew his vital energy, consequently by the value of those means of subsistence that are physically indispensable. If the price of labour-power fall to this minimum, it falls below its value, since under such circumstances it can be maintained and developed only in a crippled state. But the value of every commodity is determined by the labour-time requisite to turn it out so as to be of normal quality.

It is a very cheap sort of sentimentality which declares this method of determining the value of labour-power, a method prescribed by the very nature of the case, to be a brutal method, and which wails with Rossi that, "To comprehend capacity for labour (puissance de travail) at the same time that we make abstraction from the means of subsistence of the labourers during the process of production, is to comprehend a phantom (être de raison). When we speak of labour, or capacity for labour, we speak at the same time of the labourer and his means of subsistence, of labourer and wages." When we speak of capacity for labour, we do not speak of labour, any more than when we speak of capacity for digestion, we speak of digestion. The latter process requires something more than a good stomach. When we speak of capacity for labour we do not abstract from the necessary means of subsistence. On the contrary, their value is expressed in its value. If his capacity