and tear of the tools by which they were assisted. But it was consumed productively, and has left a permanent result in the improved productiveness of an appropriated natural agent, the land. We may call the increased produce the joint result of the land and of a capital fixed in the land. But as the capital, having in reality been consumed, cannot be withdrawn, its productiveness is thenceforth indissolubly blended with that arising from the original qualities of the soil; and the remuneration for the use of it thenceforth depends, not upon the laws which govern the returns to labour and capital, but upon those which govern the recompense for natural agents. What these are, we shall see hereafter.[1]
§ 2.There is a great difference between the effects of circulating and those of fixed capital, on the amount of the gross produce of the country. Circulating capital being destroyed as such, or at any rate finally lost to the owner, by a single use; and the product resulting from that one use being the only source from which the owner can replace the capital, or obtain any remuneration for its productive employment; the product must of course be sufficient for those purposes, or in other words, the result of a single use must be a reproduction equal to the whole amount of the circulating capital used, and a profit besides. This, however, is by no means necessary in the case of fixed capital. Since machinery, for example, is not wholly consumed by one use, it is not necessary that it should be wholly replaced from the product of that use. The machine answers the purpose of its owner if it brings in, during each interval of time, enough to cover the expense of repairs, and the deterioration in value which the machine has sustained during the same time, with a surplus sufficient to yield the ordinary profit on the entire value of the machine.
From this it follows that all increase of fixed capital,
- ↑ Infra, book ii. chap. xvi. On Rent.
