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The portion of the product that represents the surplus-value, (one tenth of the 20 lbs., or 2 lbs. of yarn, in the example given in Sec. 2) we call "surplus-produce." Just as the rate of surplus-value is determined by its relation, not to the sum total of the capital, but to its variable part; in like manner, the relative quantity of surplus-produce is determined by the ratio that this produce bears, not to the remaining part of the total product, but to that part of it in which is incorporated the necessary labour. Since the production of surplus-value is the chief end and aim of capitalist production, it is clear, that the greatness of a man's or a nation's wealth should be measured, not by the absolute quantity produced, but by the relative magnitude of the surplus-produce.  The sum of the necessary labour and the surplus-labour, i.e., of the periods of time during which the workman replaces the value of his labour-power, and produces the surplus-value, this sum constitutes the actual time during which he works, i.e., the working-day.
Footnotes  "If we reckon the value of the fixed capital employed as a part of the advances, we must reckon the remaining value of such capital at the end of the year as a part of the annual returns." (Malthus, "Princ. of Pol. Econ." 2nd. ed., Lond., 1836, p. 269.)  What Lucretius says is self-evident; "nil posse creari de nihilo," out of nothing, nothing can be created. Creation of value is transformation of labour-power into labour.
Labourpower itself is energy transferred to a human organism by means of nourishing matter.
 In the same way that the English use the terms "rate of profit," "rate of interest." We shall see, in Book III, that the rate of profit is no mystery, so soon as we know the laws of surplus-value. If we reverse the process, we cannot comprehend either the one or the other.
 Note added in the 3rd German edition. — The author resorts here to the economic language in current use. It will be remembered that on p. 182 (present edition, p. 174) it was shown that in reality the labourer "advances" to the capitalist and not the capitalist to the labourer. — F. E.
 In this work, we have, up to now, employed the term "necessary labour-time," to designate the time necessary under given social conditions for the production of any commodity. Henceforward we use it to designate also the time necessary for the production of the particular commodity labour-power. The use of one and the same technical term in different senses is inconvenient, but in no science can it be altogether avoided. Compare, for instance, the higher with the lower branches of mathematics.
 Herr Wilhelm Thucydides Roscher has found a mare's nest. He has made the important discovery that if, on the one hand, the formation of surplus-value, or surplus-produce, and the consequent accumulation of capital, is now-a-days due to the thrift of the capitalist, on the other hand, in the lowest stages of civilisation it is the strong who compel the weak to economise. (l. c., p. 78.) To economise what? Labour? Or superfluous wealth that does not exist? What is it that makes such men as Roscher account for the origin of surplus-value, by a mere rechauffé of the more of less plausible excuses by the capitalist, for his appropriation of surplus-value? It is, besides their real ignorance, their apologetic dread of a scientific analysis of value and surplus-value, and of obtaining a result, possibly not altogether palatable to the powers that be.
 Although the rate of surplus-value is an exact expression for the degree of exploitation of labour-power, it is, in no sense, an expression for the absolute amount of exploitation. For example, if the necessary labour 5 hours and the surplus-labour = 5 hours, the degree of exploitation is 100%. The amount of exploitation is here measured by 5 hours. If, on the other hand, the necessary labour = 6 hours and the surplus-labour = 6 hours, the degree of exploitation remains, as before, 100%, while the actual amount of exploitation has increased 20%, namely from five hours to six.
 The above data, which may be relied upon, were given me by a Manchester spinner.
In England the horse-power of an engine was formerly calculated from the diameter of its cylinder, now the actual horse-power shown by the indicator is taken.
 The calculations given in the text are intended merely as illustrations. We have in fact. assumed that prices = values. We shall, however, see, in Book Ill., that even in the case of average prices the assumption cannot be made in this very simple manner.
 Senior, l. c., pp. 12, 13. We let pass such extraordinary notions as are of no importance for our purpose; for instance, the assertion, that manufacturers reckon as part of their profit, gross or net, the amount required to make good wear and tear of machinery, or in other words, to replace a part of the capital. So, too, we pass over any question as to the accuracy of his figures. Leonard Homer has shown in "A Letter to Mr.
Senior," &c., London, 1837, that they are worth no more than so-called "Analysis."
Leonard Horner was one of the Factory Inquiry Commissioners in 1833, and Inspector, or rather Censor of Factories till 1859. He rendered undying service to the English working-class. He carried on a life-long contest, not only with the embittered manufacturers, but also with the Cabinet, to whom the number of votes given by the masters in the Lower House, was a matter of far greater importance than the number of hours worked by the "hands" in the mills.
Apart from efforts in principle, Senior's statement is confused. What he really intended to say was this: The manufacturer employs the workman for 11 1/2 hours or for 23 half-hours daily. As the working-day, so, too, the working year, may be conceived to consist of 11 1/2 hours or 23 half-hours, but each multiplied by the number of working-days in the year. On this supposition, the 23 half-hours yield an annual product of £115,000; one half-hour yields 1/23 x £115,000; 20 half-hours yield 20/23 x £115,000 = £100,000, i.e., they replace no more than the capital advanced. There remain 3 half-hours, which yield 3/23 x £115,000 = £5,000 or the gross profit. Of these 3 half-hours, one yields 1/23 x £115,000 = £5,000; i.e., it makes up for the wear and tear of the machinery; the remaining 2 half-hours, i.e., the last hour, yield 2/23 x £115,000 = £10,000 or the net profit. In the text Senior converts the last 2/23 of the product into portions of the working-day itself.
 If, on the one hand, Senior proved that the net profit of the manufacturer, the existence of the English cotton industry, and England's command of the markets of the world, depend on "the last working-hour," on the other hand, Dr. Andrew Ure showed, that if children and young persons under 18 years of age, instead of being kept the full 12 hours in the warm and pure moral atmosphere of the factory, are turned out an hour sooner into the heartless and frivolous outer world, they will be deprived, by idleness and vice, of all hope of salvation for their souls. Since 1848, the factory inspectors have never tired of twitting the masters with this "last," this "fatal hour." Thus Mr. Hovell in his report of the 21st May, 1855: "Had the following ingenious calculation (he quotes Senior) been correct, every cotton factory in the United Kingdom would have been working at a loss since the year 1850." (Reports of the Insp. of Fact., for the half-year, ending 30th April, 1855, pp. 19, 20.) In the year 1848, after the passing of the 10 hours' bill, the masters of some flax spinning mills, scattered, few and far between, over the country on the borders of Dorset and Somerset, foisted a petition against the bill on to the
shoulders of a few of their work-people. One of the clauses of this petition is as follows:
"Your petitioners, as parents, conceive that an additional hour of leisure will tend more to demoralise the children than otherwise, believing that idleness is the parent of vice." On this the factory report of 31st Oct., 1848, says: The atmosphere of the flax mills, in which the children of these virtuous and tender parents work, is so loaded with dust and fibre from the raw material, that it is exceptionally unpleasant to stand even 10 minutes in the spinning rooms: for you are unable to do so without the most painful sensation, owing to the eyes, the ears, the nostrils, and mouth, being immediately filled by the clouds of flax dust from which there is no escape. The labour itself, owing to the feverish haste of the machinery, demands unceasing application of skill and movement, under the control of a watchfulness that never tires, and it seems somewhat hard, to let parents apply the term "idling" to their own children, who, after allowing for meal-times, are fettered for 10 whole hours to such an occupation, in such an atmosphere.... These children work longer than the labourers in the neighbouring villages.... Such cruel talk about "idleness and vice" ought to be branded as the purest cant, and the most shameless hypocrisy.... That portion of the public, who, about 12 years ago, were struck by the assurance with which, under the sanction of high authority, it was publicly and most earnestly proclaimed, that the whole net profit of the manufacturer flows from the labour of the last hour, and that, therefore, the reduction of the working-day by one hour, would destroy his net profit, that portion of the public, we say, will hardly believe its own eyes, when it now finds, that the original discovery of the virtues of "the last hour" has since been so far improved, as to include morals as well as profit; so that, if the duration of the labour of children, is reduced to a full 10 hours, their morals, together with the net profits of their employers, will vanish, both being dependent on this last, this fatal hour. (See Repts., Insp. of Fact., for 31st Oct., 1848, p. 101.) The same report then gives some examples of the morality and virtue of these same pure-minded manufacturers, of the tricks, the artifices, the cajoling, the threats, and the falsifications, they made use of, in order, first, to compel a few defenceless workmen to sign petitions of such a kind, and then to impose them upon Parliament as the petitions of a whole branch of industry, or a whole country. It is highly characteristic of the present status of so-called economic science, that neither Senior himself, who, at a later period, to his honour be it said, energetically supported the factory legislation, nor his opponents, from first to last, have ever been able to explain the false conclusions of the "original discovery." They appeal to actual experience, but the why and wherefore remains a mystery.
 Nevertheless, the learned professor was not without some benefit from his journey to Manchester. In the "Letters on the Factory Act," he makes the whole net gains including "profit" and "interests" and even "something more," depend upon a single unpaid hour's work of the labourer. One year previously, in his "Outlines of Political Economy," written for the instruction of Oxford students and cultivated Philistines, he had also "discovered, in opposition to Ricardo's determination of value by labour, that profit is derived from the labour of the capitalist, and interest from his asceticism, in other words, from his abstinence." The dodge was an old one, but the word "abstinence " was new.
Herr Roscher translates it rightly by "Enthaltung." Some of his countrymen, the Browns, Jones, and Robinsons, of Germany, not so well versed in Latin as he, have, monk-like, rendered it by "Entsagung" (renunciation).
 "To an individual with a capital of £20,000, whose profits were £2,000 per annum, it would be a matter quite indifferent whether his capital would employ a 100 or 1,000 men, whether the commodity produced sold for £10,000 or £20,000, provided, in all cases, his profit were not diminished below £2,000. Is not the real interest of the nation similar?
Provided its net real income, its rent and profits, be the same, it is of no importance whether the nation consists of 10 or of 12 millions of inhabitants." (Ric. l. c.,.p. 416.) Long before Ricardo, Arthur Young, a fanatical upholder of surplus-produce, for the rest, a rambling, uncritical writer, whose reputation is in the inverse ratio of his merit, says, "Of what use, in a modem kingdom, would be a whole province thus divided [in the old Roman manner, by small independent peasants], however well cultivated, except for the mere purpose of breeding men, which taken singly is a most useless purpose?" (Arthur Young: "Political Arithmetic, &c." London, 1774, p. 47.) Very curious is "the strong inclination... to represent net wealth as beneficial to the labouring class... though it is evidently not on account of being net." (Th. Hopkins, "On Rent of Land, &c." London, 1828, p. 126.) Transcribed by Zodiac Html Markup by Stephen Baird (1999) Next: Chapter Ten: The Working Day Capital Volume One- Index Karl Marx Capital Volume One
The Production of Absolute Surplus-Value
THE WORKING-DAYContents Section 1 - The Limits of the Working-Day Section 2 - The Greed for Surplus-Labour. Manufacturer and Boyard Section 3 - Branches of English Industry without Legal Limits to Exploitation Section 4 - Day and Night Work. The Relay System Section 5 - The Struggle for a Normal Working-Day. Compulsory Laws for the Extension of the Working-Day from the Middle of the 14th to the End of the 17th Century Section 6 - The Struggle for the Normal Working-Day. Compulsory Limitation by Law of the Working-Time. The English Factory Acts, 1833 to 1864 Section 7 - The Struggle for the Normal Working-Day. Reaction of the English Factory Acts on Other Countries
SECTION 1THE LIMITS OF THE WORKING-DAY
We started with the supposition that labour-power is bought and sold at its value. Its value, like that of all other commodities, is determined by the working-time necessary to its production. If the production of the average daily means of subsistence of the labourer takes up 6 hours, he must work, on the average, 6 hours every day, to produce his daily labour-power, or to reproduce the value received as the result of its sale. The necessary part of his working-day amounts to 6 hours, and is, therefore, caeteris paribus, a given quantity. But with this, the extent of the working-day itself is not yet given.
Let us assume that the line A—-B represents the length of the necessary working-time, say 6 hours. If the labour be