He examines the mechanism of accumulation further from this very point of view, focusing on the fact that surplus value must pass through the money stage before it is accumulated.

‘For instance, capitalist A, who sells during one year, or during a number of successive years, certain quantities of commodities produced by him, thereby converts that portion of the commodities, which bears surplus-value, the surplus-product, or, in other words, the surplus-value produced by himself, successively into money, accumulates it gradually, and thus makes for himself a new potential money-capital. It is potential money-capital on account of its capacity and destination of being converted into the elements of productive capital. But practically he merely accumulates a simple hoard, which is not an element of actual production. His activity for the time being consists only in withdrawing circulating money out of circulation. Of course, it is not impossible that the circulating money thus laid away by him was itself, before it entered into circulation, a portion of some other hoard.’[114] ‘Money is withdrawn from circulation and accumulated as a hoard by the sale of commodities without a subsequent purchase. If this operation is conceived as one taking place universally, then it seems inexplicable where the buyers are to come from, since in that case everybody would want to sell in order to hoard, and no one would want to buy. And it must be so conceived, since every individual capital may be in process of accumulation.

‘If we were to conceive of the process of circulation as one taking place in a straight line between the various divisions of annual reproduction—which would be incorrect as it consists with a few exceptions of mutually retroactive movements—then we should have to start out from the producer of gold (or silver) who buys without selling, and to assume that all others sell to him. In that case, the entire social surplus-product of the current year would pass into his hands, representing the entire surplus-value of the year, and all the other capitalists would distribute among themselves their relative shares in his surplus-product, which consists naturally of money, gold being the natural form of his surplus-value. For that portion of the product of the gold producer, which has to make good his active capital, is already tied up and disposed of. The surplus-value of the gold producer, in the form of gold, would then be the only fund from which all other capitalists would have to derive the material for the conversion of their annual surplus-product into gold. The magnitude of its value would then have to be equal to the entire annual surplus-value of society, which must first assume the guise of a hoard. Absurd as this assumption would be, it would accomplish nothing more than to explain the possibility of a universal formation of a hoard at the same period. It would not further reproduction itself, except on the part of the gold producer, by one single step.

‘Before we solve this seeming difficulty, we must distinguish....’[115]

The obstacle in the way of realising the surplus value which Marx here calls a ‘seeming difficulty’ nevertheless is important enough for the whole further discussion in Capital, volume ii, to be concentrated on overcoming it. As a first attempt, Marx proffers the solution of a hoard which, owing to the separation of the different individual constant capitals in the process of circulation, will inevitably be formed in a capitalist system of production. Inasmuch as different capital investments have different spans of life, and there is always an interval before the parts of a plant are due for renewal, at any given moment we may find that one individual capitalist is already busy renewing his plant, while another is still building up reserves from the proceeds yielded by the sale of his commodities against the day when he will have enough to renew his fixed capital.

‘For instance, let A sell 600, representing 400c + 100v + 100s to B, who may represent more than one buyer. A sells 600 in commodities for 600 in money, of which 100 are surplus-value which he withdraws from circulation and hoards in the form of money. But these 100 in money are but the money-form of the surplus-product in which a value of 100 was incorporated.’[116]

In order to comprehend the problem in complete purity, Marx here assumes the whole of the surplus value to be capitalised, for which reason he ignores altogether that part of the surplus value is used for the capitalists’ personal consumption; in addition, A´, A´´ and A´´´ as well as B´, B´´ and B´´´ here belong to Department I.

‘The formation of a hoard, then, is not a production, nor is it an increment of production. The action of the capitalist consists merely in withdrawing from circulation 100 obtained by the sale of his surplus-product, in holding and hoarding this amount. This operation is carried on, not alone on the part of A, but at numerous points of the periphery of circulation by other capitalists named A´, A´´, A´´´.... However, A accomplishes the formation of a hoard only to the extent that he acts as a seller, so far as his surplus-product is concerned, not as a buyer. His successive production of surplus-products, the bearers of his surplus-value convertible into money, is therefore a premise for the formation of his hoard. In the present case, where we are dealing only with the circulation within Department I, the natural form of the surplus-product, and of the total product of which it is a part, is that of an element of constant capital of I, that is to say it belongs to the category of a means of production creating means of production. We shall see presently what becomes of it, what function it performs, in the hands of the buyers such as B, B´, B´´, etc.

‘It must particularly be noted at this point that A, while withdrawing money from circulation and hoarding it, on the other hand throws commodities into it without withdrawing other commodities in return. The capitalists, B, B´, B´´, etc., are thereby enabled to throw only money into it and withdraw only commodities from it. In the present case, these commodities, according to their natural form and destination, become a fixed or circulating element of the constant capital of B, B´, etc.’[117]

There is nothing new about this whole process. Marx had already described it extensively in connection with simple reproduction, since it alone can explain how a society is able to renew constant capital under conditions of capitalist reproduction. How this process can lay the besetting problem of our analysis of enlarged reproduction is far from self-evident. The difficulty had been that for the purpose of accumulation, part of the surplus value is not consumed by the capitalists but added to capital in order to expand production, giving rise to the question of buyers for this additional product. The capitalists do not want to consume it and the workers are not able to do so, their entire consumption being covered in every case by the available variable capital. Whence the demand for the accumulated surplus value? or, as Marx would have it: Whence the money to pay for the accumulated surplus value?