We have seen that merchant's capital and interest-bearing capital are the oldest forms of capital. But it is in the nature of things that interest-bearing capital assumes in popular conception the form of capital par excellence. In merchant's capital there takes place the work of the middleman, no matter whether considered as cheating, labour, or anything else. But in the case of interest-bearing capital the self-reproducing character of capital, the self-expanding value, the production of surplus value, appears purely as an occult property. This accounts for the fact that even some political economists, particularly in countries where industrial capital is not yet fully developed, as in France, cling to interest-bearing capital as the fundamental form of capital and regard ground-rent, for example, merely as a modified form of it, since the loan-form also predominates here. In this way, the internal organisation of the capitalist mode of production is completely misunderstood, and the fact is entirely overlooked that land, like capital, is loaned only to capitalists. Of course, means of production in kind, such as machines and business offices, can also be loaned instead of money. But they then represent a definite sum of money, and the fact that in addition to interest a part is paid for wear and tear is due to their use-value, i.e., the specific natural form of these elements of capital. The decisive factor here is again whether they are loaned to direct producers, which would presuppose the non-existence of the capitalist mode of production-at least in the sphere in which this occurs — or whether they are loaned to industrial capitalists, which is precisely the assumption based upon the capitalist mode of production. It is still more irrelevant and meaningless to drag the lending of houses, etc., for individual use into this discussion. That the working-class is also swindled in this form, and to an enormous extent, is self evident; but this is also done by the retail dealer, who sells means of subsistence to the worker. This is secondary exploitation, which runs parallel to the primary exploitation taking place in the production process itself. The distinction between selling and loaning is quite immaterial in this case and merely formal, and, as already indicated, (Present edition: pp. 345-50. — Ed.) cannot appear as essential to anyone, unless he be wholly unfamiliar with the actual nature of the problem.