13207., a difference of 10 per cent., would, if profits had been only half as much, have been sold for 11007. and 11557. a difference of only 5 per cent.

It follows from this, that even a general rise of wages, when it involves a real increase in the cost of labour, does in some degree influence values. It does not affect them in the manner vulgarly supposed, by raising them universally. But an increase in the cost of labour, lowers profits; and therefore lowers in natural values the things into which profits enter in a greater proportion than the average, and raises those into which they enter in a less proportion than the average. All commodities in the production of which machinery bears a large part, especially if the machinery is very durable, are lowered in their relative value when profits fall; or, what is equivalent, other things are raised in value relatively to them. This truth is sometimes expressed in a phraseology more plausible than sound, by saying that a rise of wages raises the value of things made by labour, in comparison with those made by machinery. But things made by machinery, just as much as any other things, are made by labour, namely the labour which made the machinery itself: the only difference being that profits enter somewhat more largely into the production of things for which machinery is used, though the principal item of the outlay is still labour. It is better, therefore, to associate the effect with fall of profits than with rise of wages; especially as this last expression is extremely ambiguous, suggesting the idea of an increase of the labourer's real remuneration, rather than of what is alone to the purpose here, namely, the cost of labour to its employer.

§ 6. Besides the natural and necessary elements in cost of production-labour and profits-there are others which are artificial and casual, as for instance a tax. The taxes on hops and malt are as much a part of the cost of production of those articles, as the wages of the labourers. The expenses which the law imposes, as well as those which the

nature of things imposes, must be reimbursed with the ordinary profit from the value of the produce, or the things will not continue to be produced. But the influence of taxation on value is subject to the same conditions as the influence of wages and of profits. It is not general taxation, but differential taxation, that produces the effect. If all productions were taxed so as to take an equal percentage from all profits, relative values would be in no way disturbed. If only a few commodities were taxed, their value would rise: and if only a few were left untaxed, their value would fall. If half were taxed and the remainder untaxed, the first half would rise and the last would fall relatively to each other. This would be necessary in order to equalize the expectation of profit in all employments, without which the taxed employments would ultimately, if not immediately, be abandoned. But general taxation, when equally imposed, and not disturbing the relations of different productions to one another, cannot produce any effect on values.

We have thus far supposed that all the means and appliances which enter into the cost of production of commodities, are things whose own value depends on their cost of production. Some of them, however, may belong to the class of things which cannot be increased ad libitum in quantity, and which therefore, if the demand goes beyond a certain amount, command a scarcity value. The materials of many of the ornamental articles manufactured in Italy are the substances called rosso, giallo, and verde antico, which, whether truly or falsely I know not, are asserted to be solely derived from the destruction of ancient columns and other ornamental structures; the quarries from which the stone was originally cut being exhausted, or their locality forgotten.* A material of such a nature, if in much demand, must be at a scarcity value; and this value enters into the cost of production, and, consequently, into the value of the finished article. The time seems to be approaching

* Some of these quarries, I believe, have been rediscovered, and are again worked.

when the more valuable furs will come under the influence of a scarcity value of the material. Hitherto the diminishing number of the animals which produce them, in the wildernesses of Siberia and on the coasts of the Esquimaux Sea, has operated on the value only through the greater labour which has become necessary for securing any given quantity of the article, since, without doubt, by employing labour enough, it might still be obtained in much greater abundance for some time longer.

But the case in which scarcity value chiefly operates in adding to cost of production, is the case of natural agents. These, when unappropriated, and to be had for the taking, do not enter into cost of production, save to the extent of the labour which may be necessary to fit them for use. Even when appropriated, they do not (as we have already seen) bear a value from the mere fact of the appopriation, but only from scarcity, that is, from limitation of supply. But it is equally certain that they often do bear a scarcity value. Suppose a fall of water, in a place where there are more mills wanted than there is water-power to supply; the use of the fall of water will have a scarcity value, sufficient either to bring the demand down to the supply, or to pay for the creation of an artificial power, by steam or otherwise, equal in efficiency to the water-power.

A natural agent being a possession in perpetuity, and being only serviceable by the products resulting from its continued employment, the ordinary mode of deriving benefit from its ownership is by an annual equivalent, paid by the person who uses it, from the proceeds of its use. This equivalent always might be, and generally is, termed rent. The question, therefore, respecting the influence which the appropriation of natural agents produces on values, is often stated in this form: Does Rent enter into Cost of Production? and the answer of the best political economists is in the negative. The temptation is strong to the adoption of these sweeping expressions, even by those who are aware of the restrictions with which they must be taken; for there

is no denying that they stamp a general principle more firmly on the mind, than if it were hedged round in theory with all its practical limitations. But they also puzzle and mislead, and create an impression unfavourable to political economy, as if it disregarded the evidence of facts. No one can deny that rent sometimes enters into cost of production. If I buy or rent a piece of ground, and build a cloth manufactory on it, the ground-rent forms legitimately a part of my expenses of production, which must be repaid by the product. And since all factories are built on ground, and most of them in places where ground is peculiarly valuable, the rent paid for it must, on the average, be compensated in the values of all things made in factories. In what sense it is true that rent does not enter into the cost of production or affect the value of agricultural produce, will be shown in the succeeding chapter.

CHAPTER V.

OF RENT, IN ITS RELATION TO VALUE.

§ 1. WE have investigated the laws which determine the value of two classes of commodities the small class which, being limited to a definite quantity, have their value entirely determined by demand and supply, save that their cost of production (if they have any) constitutes a minimum below which they cannot permanently fall; and the large class, which can be multiplied ad libitum by labour and capital, and of which the cost of production fixes the maximum as well as the minimum at which they can permanently exchange. But there is still a third kind of commodities to be considered: those which have, not one, but several costs of production; which can always be increased in quantity by labour and capital, but not by the same amount of labour and capital; of which so much may be produced at a given cost, but a further quantity not without a greater These commodities form an intermediate class, partaking of the character of both the others. The principal of them is agricultural produce. We have already made abundant reference to the fundamental truth, that in agriculture, the state of the art being given, doubling the labour does not double the produce; that if an increased quantity of produce is required, the additional supply is obtained at a greater cost than the first. Where a hundred quarters of corn are all that is at present required from the lands of a given village, if the growth of population made it necessary to raise a hundred more, either by breaking up

cost.