Thirdly, and lastly, the machines and instruments of trade, etc., which compose the fixed capital, bear this further resemblance to that part of the circulating capital which consists in money; that as every saving in the expense of erecting and supporting those machines, which does not diminish the productive powers of labour, is an improvement of the net revenue of the society, so every saving in the expense of collecting and supporting that part of the circulating capital which consists in money, is an improvement of exactly the same kind.

It is sufficiently obvious, and it has partly, too, been explained already, in what manner every saving in the expense of supporting the fixed capital is an improvement of the net revenue of the society. The whole capital of the undertaker of every work is necessarily divided between