The next form, in which the process presents itself, is that of a succession of phases, so that the transition of capital into a new phase is conditioned on its departure from another. Every special cycle has therefore one of the functional forms of capital for its point of departure or return. On the other hand, the aggregate process is indeed the unity of its three cycles, which are the different forms in which the continuity of the process expresses itself: The total rotation appears as its own specific cycle to every functional form of capital, and every one of these cycles contributes to the continuity of the process. The rotation of one functional form requires that of the others. This is the inevitable requirement for the aggregate process of production, especially for the social capital, that it is at the same time a process of reproduction, and thus a rotation of each one of its elements. Different aliquot parts of capital pass successively through the various stages and functional forms. By this means, every functional form passes simultaneously with the others through its own cycles, although other parts of capital are continuously presented by each form. One part of capital, continually changing, continually reproduced, exists as a commodity-capital which is converted into money; another as money-capital converted into productive capital; and a third as productive capital converted into commodity-capital. The continuous existence of all three forms is brought about by the rotation of the aggregate cycle through these three phases.
Capital as a whole, then, exists simultaneously side by side in its different phases. But every part passes continuously and successively from one phase and functional from into the next one and performs a function in all of them. Its forms are fluid and their simultaneousness is brought about by their succession. Every form follows and precedes another, so that the return of one capital part to a certain form is conditioned on the return of another part to some other form. Every part describes continuously its own cycle, but it is always another part which assumes a certain form, and these special cycles are simultaneous and successive parts of the aggregate rotation.
The continuity of the aggregate process is realized only by the unity of the three cycles, and would be impossible with the above-mentioned interruptions. The social capital always has this continuity and its process always rests on the unity of the three cycles.
The continuity of the reproduction is more or less interrupted so far as the individual capitals are concerned. In the first place, the masses of value are frequently distributed at various periods and in unequal portions over the various stages and functional forms. In the second place, these portions may be differently distributed, according to the character of the commodity, which is to be produced. In the third place, the continuity, may be more or less interrupted in those branches of production, which are dependent on the seasons, either on account of natural causes, such as agriculture, fishing, etc., or on account of conventional circumstance such as the so-called season-work. The process proceeds most regularly and uniformly in the factories and in mining. But this difference of the various branches of production does not cause any difference in the general forms of the process of rotation.
Capital, as a value creating more value, is not merely conditioned on class-relations, on a definite social system resting on the existence of labor in the form of wage-labor. It is also a movement, a rotation through various stages, comprising three different cycles. Therefore it can be understood only as a thing in motion, not as a thing at rest. Those who look upon the self-development of value as a mere abstraction forget that the movement of industrial capital is the realization of this abstraction. Value here passes through various forms in which it maintains itself and at the same time increases its value. As we are here concerned in the form of this movement, we shall not take into consideration the revolutions, which capital-value may undergo during its rotation. But it is clear that capitalist production can only exist and endure, in spite of the revolutions of capital-value, so long as this value creates more value, that is to say, so long as it goes through its cycles as a self-developing value, or so long as the revolutions in value can be overcome and balanced in some way. The movements of capital appear as the actions of some individual industrial capitalist who performs the functions of a buyer of labor-power, a seller of commodities, and an owner of productive capital, and who brings about the process of rotation by his activity. If social capital-value experiences a revolution in value, it may happen, that the capital of the individual capitalist succumbs and fails, because it cannot adapt itself to the conditions of this conversion of values. To the extent that such revolutions in value become acute and frequent, the automatic nature of self-developing value makes itself felt with the force of elementary powers against the foresight and calculations of the individual capitalist, the course of normal production becomes subject to abnormal speculation, and the existence of individual capitals is endangered. These periodical revolutions in value, therefore, prove that which they are alleged to refute, namely, the independent nature of value in the form of capital and its increasing independence in the course of its development.
This succession of the metamorphoses of rotating capital includes the continuous comparison of the changes of value brought about by rotation with the original magnitude of capital. When the growing independence of value as compared to the power of creating value, of labor-power, has been inaugurated by the act M—L (purchase of labor-power) and is realized during the process of production as an exploitation of labor-power, this rise of independence on the part of value does not re-appear in that cycle, in which money, commodities, and elements of production are merely passing forms of rotating capital value, and in which the former magnitude of value compares itself to the present changed value of capital.
"Value," says Bailey, in opposition to the idea of the growing independence of value characteristic of capitalist production, which he regards as an illusion of certain economists, "value is a relation between contemporary commodities, because such only admit of being exchanged with each other." This criticism is directed against the comparison of commodity-values of different periods of time, which amounts to the comparison of the expenditure of productive labor required for the manufacture of equal commodities at different periods, once that the value of money for every period has been fixed. His opposition is due to his general misunderstanding, for he thinks that exchange-value is value itself, that the form of value is identical with the volume of value; so that values of commodities cannot be compared, so long as they do not perform active service as exchange value and are not actually exchanged for each other. He has not the least inkling of the fact that value performs only the functions of capital, in so far as it remains identical with itself and is compared with itself in those different phases of its rotation, which are not at all contemporary, but succeed one another.
In order to study the formula of this rotation in its purity, it is not sufficient to assume that the commodities are sold at their value, but that this takes place under conditions which are otherwise equal. Take, for instance, the cycle P...P and make abstraction of all technical revolutions within the process of production, by which the productive capital of a certain individual capitalist might be depreciated; make abstraction furthermore of all reactions, which a change in the elements of value of productive capital might cause in the value of the existing commodity-capital, which might be increased or lowered, if a stock of it were kept on hand. Take it also, that C', or 10,000 lbs. of yarn, have been sold at their value of 500 pounds sterling; 8,440 lbs., equal to 422 pounds sterling, reproduce the capital-value contained in C'. But if the prices of cotton, coal, etc., have increased (we do not consider mere fluctuations in price), these 422 pounds sterling may not suffice for the full reproduction of the elements of productive capital; in that case, additional money-capital is required and money-value is tied up. The opposite takes place, if those prices fall, and money-capital is set free. The process takes a normal course only so long as the values remain constant; it proceeds practically normal, so long as the disturbances during the repetition of the process balance one another. But to the extent that these disturbances increase in volume, the industrial capitalist must have at his disposal a greater money-capital, in order to tide himself over the period of compensation; and as the scale of each individual process of production and thus the minimum size of the capital to be advanced increase in the process of capitalist production, we have here another circumstance to add to those others which transform the functions of the industrial capitalist more and more into a monopoly of great money-capitalists, who may be individuals or associations.
We remark incidentally that