undertaker of some great manufactory, who employs a thousand a-year in the maintenance of his machinery, if he can reduce this expense to five hundred, will naturally employ the other five hundred in purchasing an additional quantity of materials, to be wrought up by an additional number of workmen. The quantity of that work, therefore, which his machinery was useful only for performing, will naturally be augmented, and with it all the advantage and conveniency which the society can derive from that work.
The expense of maintaining the fixed capital in a great country, may very properly be compared to that of repairs in a private estate. The expense of repairs may frequently be necessary for supporting the produce of the estate, and consequently both the gross and the neat rent of the landlord. When by a more proper direction, however, it can be diminished without occasioning any diminution of produce, the gross rent remains at least the same as before, and the neat rent is necessarily augmented.
But though the whole expense of maintaining the fixed capital is thus necessarily excluded from the neat revenue of the society, it is not the same case with that of maintaining the circulating capital. Of the four parts of which this latter capital is composed, money, provisions, materials, and finished work, the three last, it has already been observed, are regularly withdrawn from it, and placed either in the fixed capital of the society, or in their stock reserved for immediate consumption. Whatever portion of those consumable goods is not employed in maintaining the former, goes all to the latter, and makes a part of the neat revenue of the society. The maintenance of those three parts of the circulating capital, therefore, withdraws no portion of the annual produce from the neat revenue of the society, besides what is necessary for maintaining the fixed capital.
The circulating capital of a society is in this respect different from that of an individual. That of an individual is totally excluded from making any