Phases of the Marginalist Revolution

A Marginal Revolutionary

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"The conclusion to which I am ever more clearly coming is that the only hope of attaining a true system of Economics is to fling aside, once and for ever, the mazy and preposterous assumptions of the Ricardian School. Our English Economists have been living in a fool's paradise. The truth is with the French School, and the sooner we recognize this fact, the better it will be for the world."

(William Stanley Jevons, Theory of Political Economy, 1871: p.xliv-xlv).

"If, instead of welcoming inquiry and criticism, the admirers of a great author accept his writings as authoritative, both in their excellences and in their defects, the most serious injury is done to truth. In matters of philosophy and science, authority has ever been the great opponent of truth. A despotic calm is usually the triumph of error. In the republic of the sciences, sedition and even anarchy are beneficial in the long run to the greatest happiness of the greatest number."

(William Stanley Jevons, Theory of Political Economy, 1871: p.275-6)

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Contents

(A) Scarcity and Utility in the Classical Schema
(B) The Franco-Italian Tradition: Subjective Scarcity
(C) The Holy Grail: Marginal Utility
(D) The Revolution of 1871-4.
(E) Consolidation: the Great Flood.
(F) Aftermath: the Great Drought.
(G) The Paretian Revival

Selected References

Back

The crux of the Neoclassical theory of value is the notion of subjective scarcity. The Neoclassical answer to the famous "water-diamond" paradox is that diamonds are naturally more valuable than water not because diamonds are costlier to produce (the Classical answer), but rather because diamonds are more scarce than water. Some may object to this distinction: if diamonds are very costly to produce, then one should expect to see somewhat less of them around, thus the cost-of-production and rarity arguments seem to boil down to the same thing. Adam Smith seems to imply this when he writes:

"[T]he value of [precious] metals has, in all ages and nations, arisen chiefly from their scarcity, and that their scarcity has arisen from the very small quantities of them which nature has any where deposited in one place, from the hard and intractable substance with which she has almost every where surrounded those small quantities, and consequently from the labour and expence [sic] which are every where necessary in order to penetrate and get at them." (A. Smith, 1776: p.563).

But this is not quite true for Neoclassicals. The Neoclassical notion of scarcity is not merely that something is "rare", but rather that it is perceived as rare by consumers. To take Lionel Robbins's (1932: p.46) famous example, bad eggs may be "rare", but if people do not desire bad eggs, then even one bad egg is already "too many" in their eyes and thus will not have much value. In contrast, if people's desire for diamonds is very great indeed, then in their perception, even a large number of diamonds may be "too few" in their eyes, thus they will have a high price. Consequently, the Neoclassical concept of scarcity is quite distinct from the Classical notion: the subjective element of desire is an integral part of the story.

There are thus two essential ingredients of Neoclassical value theory: (1) that the relative values of things arise from their relative scarcity and (2) that subjective desires are an integral part in determining the relative scarcity. Both of these notions have an old history predating 1871-4, but they were not always wedded together. Some economists believed that rarity gave rise to value without thinking too hard about whether rarity was a subjective or objective thing; in contrast, others have thought that subjective notions such as utility and demand were important in determining price, but did not really connect it to scarcity.

(A) Scarcity and Utility in the Classical Schema

The Classicals -- Adam Smith, David Ricardo, John Stuart Mill, Karl Marx, etc. -- believed in neither of these ideas. Following the pattern set by Richard Cantillon (1755), they argued that subjective desires and scarcity may be important factors in determining market (or temporary or short-run) prices, but they insisted that the natural (or equilibrium or long-run) prices were determined solely by relative costs of production (usually, relative labor costs).

The Classicals perceived rarity to be an aberration: if goods can be produced -- i.e. created -- then there is no inherent scarcity of them. Consequently, scarcity prices were what Ricardo called "monopoly prices" -- i.e. the prices which arose only "when by no possible device their quantity can be augmented; and where, therefore, the competition is wholly on one side -- amongst the buyers." (Ricardo, 1817: p.165) and thus "their price is limited only by the extent of the power and will of purchasers" (ibid.) But this is not the natural, long-run price. "The exchangeable value...of a commodity which is at a monopoly price is nowhere regulated by the cost of production." (Ricardo, ibid.) Thus, scarcity may play a role in the short-run (when quantities are fixed), but not in the long-run.

They had granted that rarity might be a determinant of value in a few cases, "rare statues and pictures, scarce book and coins, wines of a peculiar quality" (Ricardo, 1817: p.6) -- goods which cannot be produced and thus whose value is regulated by "monopoly prices". But these cases were so exceptional that they could be safely ignored. At best, as our earlier quotation from Smith indicates, they were willing to discuss scarcity as a foundation of value only insofar as it arose from high costs of production. Certainly, whatever lip service they paid to scarcity, they did not incorporate it into their central theoretical schema.

Utility was a slightly different story. The Classicals confused utility of a good with its usefulness. They agreed that a good must have usefulness if it is to be produced. The mercantilist Nicholas Barbon was perhaps the first to explicitly claim that price was influenced by utility: "the Value of all Wares arise from their Use; Things of no Use, have no Value, as the English phrase is, They are good for nothing." (Barbon, 1690: p.13). In this, he was followed up by John Locke (1692) and John Law (1705).

Richard Cantillon (1755) -- like all the Classicals thereafter -- acknowledged that a good must have utility in order to be produced. But utility itself did not determine the relative prices of the goods. It is relative costs of production that will determine the natural prices of goods. Utility merely determines that a good will be produced, period. That's where its role both begins and ends. Utility is of no further use beyond that.

Why did the Classicals cut utility's role so short? The reason is that utility seemed to run into trouble when confronted with the old water-diamond paradox set forth by John Law (1704: p.4) and made famous by Adam Smith (1776: p.44-5). As Smith noted, water is useful to humans, diamonds are useless to humans, thus water should have a higher "use-value" or "utility" than diamonds. But clearly, water commands a lower "exchange-value" than diamonds. Thus, like Aristotle before them, the Classicals gave up on the utility-value connection: it seems as if utility simply could not be incorporated successfully into a theory of natural price.

Of course, Smith's error was to confuse "utility" with "use-value". The concept of "utility" handed down by the Scholastics to the modern 18th Century economics by writers such as Samuel von Pufendorf (1675) was to connect utility to desiredness and not to usefulness. Diamonds may be "useless", as Smith asserted, but they could still have utility in the sense that they are desired. With the notable exceptions of Jean-Baptiste Say and Nassau Senior, the misleading argument by Adam Smith was accepted by the rest of the Classical School.

At best, utility (like scarcity) will have a prominent role to play in Classical theory only for the temporary case of short-run market prices. Indeed, Cantillon (1755) was the first to suggest a clear supply and demand mechanism for the determination of market prices which includes both utility and scarcity (inexplicably, a lot of Anglo-Saxon literature tends to credit Sir James Steuart (1767) for this). But for long-run natural prices, neither utility nor rarity have a role in the Classical schema.

(B) The Franco-Italian Tradition: Subjective Scarcity


Some writers during the Classical period refused to relegate the utility explanation to a temporary or minor phenomenon and disputed the cost-of-production solution to the water-diamond paradox. The most notable of the disputants was Jean-Baptiste Say (1803, 1815, 1828). Although a follower of Smith in many other respects, he rejected Smith's labor theory of value. Or rather, he argued that utility and thus demand must play a part in the determination of natural price. At times, he went quite far in this pursuit. James Maitland Earl Lauderdale (1804) also rejected Smith's theory and proposed a long-run demand-and-supply mechanism.

The Classicals were not amused: David Ricardo (1817: Ch. 20) and John Stuart Mill (1845, 1945) took both Say and Lauderdale to task for their heresy. For instance, Ricardo writes:

"M. Say acknowledges that the cost of production is the foundation of price, and yet in various parts of his book he maintains that price is regulated by the proportion which demand bears to supply. The real and ultimate regulator of the relative value of any two commodities is the cost of their production, and not the respective quantities which may be produced, nor the competition amongst the purchasers." (Ricardo, 1817: p.231)

However, we should note that the resistance of the Classicals was not mere pig-headedness or simply a reiteration of Smith's "use-value" confusion. As particularly expressed by J.S. Mill (1845), if one was to acknowledge the role of both demand and supply in long-run price-determination, one is effectively mixing together mathematically heterogeneous things which cannot be juxtaposed upon each other.

"It seems to me necessary, when we mean to speak of the ratio between the demand for a commodity & the supply of it, that the two quantities should be, in the mathematical sense, homogeneous -- that both of them should be estimated in numbers of the same unit." (J.S. Mill, 1945: p.143)

Although insisting on the importance of subjective utility in price determination, Law, Say and Lauderdale were less clear about the role of rarity in all of this. This is understandable given the traditional difficulty of distinguishing a costly item from a rare item. Objectively-determined rarity had been of central importance in the work of Bernardo Davanzati (1588), Juan de Lugo (1642) and Pierre de Boisguilbert (1695), but the connection with utility was not immediately and clearly made.

The first explicit recognition of scarcity, i.e. subjectively-determined rarity, as the source of value is contained in the remarkable work of Ferdinando Galiani (1751). Galiani's brilliant performance was followed up by the anti-Physiocrat philosopher, Abbé Condillac (1776). Condillac explicitly employed both utility and rarity in determining scarcity and value and was willing to confront the Classical solution directly. As he wrote, "a thing does not have value because of its cost, as some suppose; but it costs because it has value." Condillac's argument was reiterated in a relatively obscure note by the ambiguous Physiocrat, Jacques Turgot (1769).

It is evident, then, that Say's groping for a subjectivist theory of price was not isolated. There was already a somewhat long history in France and Italy. Under Say's own influence, this Franco-Italian tradition sustained itself in these countries throughout the 19th Century. The ground-breaking work of French proto-marginalist economists such as Louis Auguste Say (1822) (J.B. Say's brother), Auguste Walras (1831) (L. Walras's father), Augustin Cournot (1838) and Jules Dupuit (1844) can thus be seen as natural outgrowths of a long tradition and not merely a series of brilliant isolated sparks of insight. It was upon this tradition that Léon Walras was to draw in composing his 1874 masterpiece..

In Germany, another ambivalent follower of Smith and popular textbook writer, Johann Friedrich Rau (1827) did not discard the role of demand entirely -- indeed he showed how demand-and-supply diagrams can be used to determine price explicitly! In addition, the weight of the German Historical School ensured that the Classical Ricardian theory never penetrated very deeply in Germany either. Together, this can perhaps explain the German-language contributions to the utility-cum-scarcity tradition, such as F.B.W. Hermann (1832), Hans von Mangoldt (1863) and, above everything, Hermann Heinrich Gossen (1854). Carl Menger was thoroughly soaked in Rau and Hermann before trying his hand in 1871.

In Great Britain, where the Ricardians reigned supreme, the subjective scarcity notion had more trouble catching on. Nonetheless, the idea had been hatched by Nassau Senior (1836) and his associates at Oxford and Dublin -- Richard Whately (1832), William F. Lloyd (1837) and Mountiford Longfield (1834). These fledgling Neoclassicals did not mince their words when confronting the Classicals. As Whately asserts heretically, "It is not that pearls fetch a high price because men have dived for them; but on the contrary, men dive for them because they fetch a high price." (Whately, 1832: p.253).

These tentative efforts in Britain, however, were smashed by John Stuart Mill's Principles of Political Economy (1848), a weighty restatement of the Classical Ricardian doctrine. It was with Lloyd, Whately and company in mind that Mill went on to assert that "Happily, there is nothing in the laws of Value which remains for the present or any future writer to clear up; the theory of the subject is complete" (Mill, 1848: Ch. III.1).

Despite Mill's abrupt interception, the grumbling continued. By the 1860s, the Classical Ricardian doctrine had came under siege, not only from the usual suspects (e.g. Carlyle, Ruskin, Cliffe Leslie) but, more importantly, from their own. The gutting of the wages fund doctrine by Thornton, Sidgwick and Walker, and the wide-ranging assault on the "vulgar economists" by Karl Marx, had dented the confidence of Classical theory. As a consequence, a window of opportunity opened in Britain during this time for outcasts such as Richard Jennings (1855), William E. Hearn (1864), Fleeming Jenkin (1870) and Henry Dunning Macleod (1857, 1881), to pursue subjective scarcity and/or supply-and-demand mechanisms in their work. Thus the claim that William Stanley Jevons was working in a vaccum in 1871 with little more than Bentham to draw upon, is not strictly correct.

[Note: Emil Kauder (1957) has argued that the reason for the retarded acceptance of subjective scarcity theory in English economics and the predominance of labor-cost theories was due to differing philosophical and religious traditions. Protestant Britain was wary of the hedonistic conception of utility, and the labor-cost theories seemed quite more compatible with its work-oriented Puritanical traditions. Thus it is in Catholic countries, like France and Italy, where sensualism is not altogether dead, that we find the great expounders of subjective scarcity theory. This is an interesting hypothesis, but it does not perfectly fit with the facts and certainly overlooks more straightforward explanations.]

(C) The Holy Grail: Marginal Utility

Discussions of utility, scarcity and the mechanism of demand and supply, however suggestive, were not well-integrated in the efforts of the early proto-Neoclassical economists. The great missing ingredient was the connection between utility and demand. Auguste Walras (1831) and Mountiford Longfield (1834) attempted an explicit connection, but their theories ended tied up in knots. As was to be discerned later, the key to successful integration was marginal utility -- specifically, diminishing marginal utility.

The concept of diminishing marginal utility -- i.e. that equal increments of a good yield diminishing increments of utility -- was already widely known. Daniel Bernoulli (1738) had employed this concept to solve the St. Petersburg Paradox. The utilitarian Jeremy Bentham (1789, 1802) had certainly stated the idea. Lloyd (1833), Senior (1836), Jennings (1855) and Hearn (1864) were well aware of diminishing marginal utility as well. The question was one of connecting it to demand, which these writers failed to do clearly.

(i) Auguste Cournot

The idea of a demand function itself was proposed by Charles D'Avenant (1699), who even attempted to estimate one for wheat (on the basis of data allegedly provided by Gregory King (1696)). The first concrete expression of a demand function was accomplished by Pietro Verri (1760). Thereafter silence reigned until the enormous leap of Augustin Cournot (1838). Cournot did not bother with the niceties of utility; his concern was focused on demand functions directly which he considered to be deducible from empirical fact. He was the first to express the demand function in algebraic form as D = F(p) and the first to draw demand-and-supply functions in price-quantity space (Cournot, 1838: p.92, Fig. 6). This, of course, was not all: in addition to demand functions, Cournot introduced the concepts of marginal revenue, marginal cost, the concept of the profit-maximizing firm, monopoly, duopoly, perfect competition and, of course, his famous "reaction functions". But marginal utility was nowhere in sight. As he argued, the "accessory ideas of utility, scarcity, and suitability to the needs and enjoyments of mankind...are variable and by nature indeterminate, and consequently ill suited for the foundation of a scientific theory" (Cournot, 1838: p.10).

(ii) Jules Dupuit

The first successful connection between marginal utility and demand was accomplished by the French engineer Jules Dupuit (1844). His remarkable effort at developing a cost-benefit analysis of public works led him to draw the demand curve in price-quantity space. Unlike Cournot, Dupuit did not rest his demand curve on empirical intuition but rather identified the demand curve as the marginal utility curve itself. Dupuit's basic idea was this: as quantity rises, the marginal utility of the good declines. Consequently, one should also say that as the quantity rises, the willingness of a person to pay for that good declines. Thus, the concept of diminishing marginal utility should translate itself into a downward-sloping demand function.

Of course, Dupuit's logic was suspect in at least one place: marginal utility is particular to an individual, while market demand is an aggregate, so something must be said about the interpersonal comparability of utility in order to proceed with the connection. Dupuit skimped on this. Nonetheless, the important point was that the connection was made between demand and utility. Dupuit, however, did not draw a supply curve and thus did not get price-determination into his story.

[Dupuit went on to define "relative utility" (what later became known as Marshall's "consumer surplus") as the area under the demand/marginal utility curve above the price and used it as a measure of the welfare effects of different prices -- yielding his famous conclusion that public welfare is maximized when the price (in his case, the toll rate on a bridge) is zero.]

(iii) H.H. Gossen

The final step came from Hermann Heinrich Gossen (1854). Unlike Dupuit, Gossen clearly distinguished the marginal utility curve from the demand curve. Gossen posited that demand is derived from the utility-maximizing choices of the consumer. Gossen's "Three Laws" can be stated as follows:

(1) the amount of utility derived from the consumption of a good declines with each additional unit of that commodity (i.e. diminishing marginal utility, or, to use Gossen's term, "diminishing worth of the last atom".)

(2) a person maximizes his utility when he distributes his income among various goods so that he obtains the same amount of satisfaction from the last unit of each good or, if money is being used, he obtains the same amount of satisfaction from the last unit of money spent upon each commodity (i.e. equality of the ratio of marginal utilities to the ratio of prices, i.e. MUi/pi = MUj/pj for any two goods i, j).

(3) a good has value only when the demand for it exceeds supply (i.e. subjective scarcity is source of value).

Of Gossen's three laws, the second is perhaps the most remarkable. The idea that, at the margin, the consumer substitutes between goods so that he obtains the same marginal utility (in terms of money) across goods yields the downward-sloping demand curve for each of the goods. To see this, merely note that when the price of a good rises, the marginal utility in terms of money (MUi/pi) declines and thus, by Gossen's first law (diminshing marginal utility), less of that good will be bought. The foundations of the Marginalist Revolution were thus in place.

(D) The Revolution of 1871-4

H.H. Gossen's (1854) work had already anticipated much of the Marginalist Revolution. However, this "ingenius idiot", as Schmoller called him, was an unknown man -- a retired Prussian civil servant -- whose work was entirely neglected. His work was only accidentally discovered in 1878 during a search by Jevons for fellow travellers. As such, the works of Jevons, Menger and Walras came forth without the benefit of Gossen's insights.

(i) William Stanley Jevons

William Stanley Jevons developed his results on marginal utility (which Jevons called "final degree of utility") independently and first announced them in an abstract of a 1862 lecture (published in 1866). The publication of Fleeming Jenkin's (1870) diagrammatic representation of the demand-and-supply mechanism led Jevons to quickly write and publish his own 1871 treatise, Theory of Political Economy in order to establish priority. Jevons couched his construction in the context of pure exchange. Specifically, assuming two goods (call them x1 and x2) and two agents (call them A and B), then in equilibrium, Jevons proposed that:

MU1A/MU2A = -dx2/dx1 = MU1B/MU2B

where MUih is the marginal utility of good xi to household h. The term dx1 is the amount of good x1 given by agent A to agent B and dx2 is the amount of good x2 given by agent B to agent A. Thus, for agent A, the marginal utility of good x1 after amount dx1 has been surrendered divided by the marginal utility of good x2 after amound dx2 has been gained, is inversely related to the exchange ratio dx2/dx1. The analogous reasoning applies for agent B. Thus: "The ratio of exchange of any two commodities will be the reciprocal of the ratio of the final degrees of utility of the quantities of commodity available for consumption after the exchange is completed." (Jevons, 1871: p.95).

Through the medium of a market, the exchange ratio can be expressed as prices, i.e. -dx2/dx1 = p1/p2, so that this can be rewritten as:

MU1A/p1 = MU2A/p2 = MU1B/p1 = MU2B/p2

so not only does Gossen's Second Law hold for every single consumer, but it also holds across consumers.

However, Jevons got somewhat tangled up in this derivation. In particular, he was not quite sure how to get from dx1/dx2 to p1/p2 or back again. His difficulty stems in part from his wariness of the difference between bilateral exchange between two people and multi-lateral exchange via the medium of the market. However, he confused himself a bit in this respect. Apparently, he believed it was easier to determine exchange ratios in bilateral exchange than in competitive situations - thus he tried to reduce his "market" situation into one of simple bilateral exchange. He did so with the help of two pieces of scaffolding: (1) by constructing "trading bodies" ( Jevons, 1871: p.88-90), so that the enormous mass of heterogeneous traders in markets could be reduced to a pair of what would today be called "representative agents" that would exchange with each other; (2) then via arbitrage-theoretic reasoning -- in his famous "Law of Indifference" (Jevons, 1871: p.90-5) -- he goes on to argue for price-taking agents so that, by definition, dx1/dx2 = p1/p2.

Ten years later, Francis Ysidro Edgeworth (1881) was to show that Jevons's instincts should be reversed: determining the exchange ratio between two bilateral trading bodies, Edgeworth argued, is in fact more difficult than determining the exchange ratio when there are numerous, heterogeneous agents in a competitive market situation. Edgeworth's demonstration of the indeterminacy of exchange ratios in bilateral exchange was captured in his famous notion of the "contract curve" and the "core". His famous conjecture, that indeterminacy is eliminated when the number of traders increases ("perfect competition"), however, was not picked up immediately.

Jevons established equilibrium in pure exchange, but, not having a good theory of production, was unable to construct the familiar "supply-and-demand" theory with variable output levels. His resolution was considerably unsatisfying. Jevons argued, as Gossen had before him, that labor supply was governed by disutility of labor: the greater the amount of work, the greater the marginal disutility of labor. Consequently, he went on to argue, by Gossen's Second Law, that the marginal utility of consuming a good must be equal to the marginal disutility of producing it. In other words, the quantity of a good produced is determined by the intersection of a downward-sloping marginal utility of consumption curve and an upward sloping marginal disutility of labor curve.

With the quantity of the good thus determinate, Jevons's next step was quickly and sloppily reasoned: once the supply of the good is given, then we can apply the pure exchange scenario we had before to determine the price of the good. This entire story is summarized by Jevons in a famous "catena":

"Cost of production determines supply;
Supply determines final degree of utility;
Final degree of utility determines value"

(W.S. Jevons, 1871: p.165)

The first line seeks to explain the output-determination process we have just summarized: namely, how higher or lower wages shift around the the marginal utility of income/disutility of labor curves so that output level, i.e. supply, changes. The second line merely states that once we have supplies of goods determined, we know what marginal utility of those goods will be; finally, the third line summarizes the pure exchange process.

This is confusing. The immediate temptation is to remove all the intermediate steps and reduce the catena to the simple claim that "cost of production determines value", a complete restatement of the Classical theory of Ricardo and Mill! Obviously, Jevons did not quite want to put it this way. Wages ought not to be hanging in the air by themselves. Unlike Classical theory, Jevons argued, the value of labour "is determined by the value of the produce, not the value of the produce by that of the labour." (Jevons, 1871: p.166). Thus, years later, Alfred Marshall would invert Jevons's catena into its proper order:

"Utility determines the amount that has to be supplied,
The amount that has to be supplied determines cost of production
Cost of production determines value."

(A. Marshall, 1890: p.674)

Without deriving demand and supply functions from his marginal utility/disutility schedules, Jevons discussion is quite confusing. It was Alfred Marshall (1890: Ch. 3; Math. App.), that got Jevons' out of this knot by deriving it formally. Now, as stated, MUi/pi is the marginal utility of dollar spend on good xi. By Gossen's Second Law, MUi/pi = MUj/pj for all goods i, j. Consequently, we can define the marginal utility of income (what Marshall called the marginal utility of money) as:

MUY = MUi/pi = MUj/pj = ....

Jevons, as we know, was clearly aware of this and even offered the identity MUi = piMUY in his work (Jevons, 1871: p.146). But how is one to construct a demand function? Marshall's process is to follow Jevons in assuming that the marginal utility of income MUY is a constant. Doing so, we immediately recognize that differentiating with respect to quantity demanded xi:

dMUi/dxi = (dpi/dxi)·MUY

so that:

dxi/dpi = MUY/( MUi/ xi)

as, by the rule of diminishing marginal utility, dMUi/dxi < 0, then dxi/dpi < 0, so a rise in the price of good xi leads to a decrease in demand for it. Thus, the demand curve is downward-sloping.

[Note: the constancy of the marginal utility of income is a dubious assumption, discussed more fully elsewhere. Effectively, what it does to eliminate the famous "income effect" of a change in price (note that this is not the same as saying that all other prices are held constant! rather, intercommodity effects are neutralized). However, this also implies that as pi rises and xi falls, total expenditure on this good, pixi, is unchanged, i.e. the demand function is unit elastic. Marshall was uncomfortable with this assumption, thus he cautioned that this was only approximately true, provided that the expenditure by a consumer on any particular good is only "a small part of his total resources" (Marshall, 1890: p.279). The derivation of demand from utility without the constant marginal utlity of income assumption had to wait until Vilfredo Pareto (1892)]

(ii) Carl Menger

Carl Menger's (1871) contribution was more clear, but less formal. Although he did not name it explicitly, he introduced the concept of diminishing marginal utility in general discussion. He just referred to the decreasing "importance of the satisfaction of needs" and used numerical examples (Menger, 1871: p.127) to illustrate the idea. [Note: the term "marginal utility", Grenznutzen, was only introduced by Friedrich von Wieser (1889); in his work, Menger uses the term "utility" in the same misleading sense Adam Smith did, i.e. in terms of objective "use-value"]. As a result, Menger comes to the Marginalist conclusion:

"Value is therefore nothing inherent in goods, no property of them, but merely the importance we atribute to the satisfaction of our needs, that is, to our lives and well-being, and in consequence carry over to economic goods as the exclusive causes of the satisfaction of our needs." (Menger, 1871: p.116)

Menger did not bother to derive a demand function, but his discussion of exchange, in many ways, supersedes that of Jevons. In particular, he defined prices as "only incidental manifestations of [exchange], symptoms of an economic equilibrium between the economies of individuals." (Menger, 1871: p.191). Prices, then, are formed by market processes of exchange and the nature of the process can vary depending on a variety of factors, notably in the degree of competitiveness. In his famous Chapter 5, Menger outlines the process of price-formation from a bargaining process between two individuals, under monopoly, duopoly and, finally, competition. Although he was not consistent (e.g. at one time recognizing the indeterminacy of prices in bilateral exchange, and then retreating from this elsewhere), Menger's analysis of the market process was highly suggestive and marked the approach of the Austrian School in years to come.

Two other points insisted upon by Menger are worth mentioning. Firstly, his distinction between economic goods and non-economic (i.e. free) goods was given central importance (Menger, 1871: p.94-109). He underlined the fact that one cannot assume that goods have prices; whether a good is free or not is a result of the final equilibrium configuration and thus is endogenous to the problem. Secondly, Menger (1871: p.149-74) outlined the important theory of imputation. As only utility can confer value, then the value of factors of production ("goods of higher order") which have no utility in and of themselves must be determined by the prices of outputs ("goods of lower order"). This is the heart of the Neoclassical treatment of production as "indirect exchange".

(iii) Léon Walras

The contribution of Léon Walras (1874) outshines both Jevons, Menger and all other predecessors in clarity, rigor and insight. It is in Walras where we find the most careful, complete and visionary statements of the Marginalist Revolution. As Schumpeter expressed it, with characteristic lack of restraint:

"Walras is in my opinion the greatest of all economists. His system of economic equilibrium, uniting, as it does, the quality of a "revolutionary" creativeness with the quality of classic synthesis, is the only work by an economist that will stand comparison with the achievements of theoretical physics. Compared with it, most of the theoretical writings of that period - and beyond - however valuable in themselves and however original subjectively, look like boats beside a liner, like inadequate attempts to catch some particular aspects of Walrasian truth." (J. A. Schumpeter, 1954: p.827)

The details of Walras's general equilibrium system are given elsewhere,, so we shall note only a few of his contributions here. Walras adopted the notion of marginal utility and the scarcity theory of value from his father, Auguste Walras (1831). However, Auguste Walras did not manage to connect the two concepts. Already in his early work, we find the young Léon Walras following his father in claiming that the value of goods depends on both utility and rarity ("rareté"). Walras then was holding on to an objective definition of rarity, defining a good as rare if "it is offered to general demand in a limited quantity" (Walras, 1860: p.8).

It was only in an 1873 article preceeding his Elements (1874) that Léon Walras took the leap and made the connection by noting that "rareté is personal or subjective" (Walras, 1874: p.146). Walras used the term rareté for "marginal utility". At least for the case of bilateral trade, this is an extremely fortuituous use of language -- for what does marginal utility of a particular good represent other the intensity with which that good is needed and thus the degree to which its absence is felt? If my marginal utility for eggs is greater than yours, then eggs are perceived by me as being more scarce than they are perceived by you.

Walras's use of the term rareté keeps the fundamental Neoclassical idea of subjective scarcity at all times in the forefront of our minds and does not let it slip out of sight. However, moving beyond exchange between two parties, the connection becomes more tenuous: scarcity is a market-wide phenomenon; marginal utility is an individual phenomenon, and thus his use of the term rareté for marginal utility may be confusing in the case of economy-wide exchange.

The rest of Walras's work is sheer brilliance. Recognizing the multi-good nature of exchange, all of Walras's analysis proceeds with multiple markets. No oversimplifying ceteris paribus assumptions are made. Alone among the early Marginalists, Walras provided a proper derivation of the demand curve from utility functions via the use of household budgets (Walras, 1874: Ch. 8, 11.). If anything is demanded, something else must be offered in exchange; consequently the aggregate value of what is offered must equal the aggregate value of what is demanded. As a result, for any bundle of goods demanded x = [x1, x2, .., xn] and for a given set of endowments e = [e1, e2, .., en], it must be that:

p1x1 + p2x2 + ... + pnxn = p1e1 + p2e2 + ... + pnen

Walras's recognized that the need for a numeraire good enabled him to fix one price, e.g. p1 = 1. In this case:

x1 + p2x2 + ... + pnxn = e1 + p2e2 + ... + pnen

where p2, p3, etc. are the prices of goods x2, x3, etc. in terms of the price of good x1. Now, Walras used an additively separable utility function so that the utility of a bundle x can be written as:

U(x) = u1(x1) + u2(x2) + ... + un(xn)

where ui(xi) is the utility from good xi. Substituting the budget constraint into the first of these separate utilities:

U(x) = u1(e1 + p2e2 + ... + pnen - p2x2 - ... - pnxn) + u2(x2) + ... + un(xn)

which, upon maximization, yields for any good xi the following first order condition:

U/ xi = -( u1/ x1)·p2 + u2/ x2 = 0

or letting MUi = ui/ xi, then we obtain the result:

MU1 = MUi/pi

for every i = 1, .., n. This is Gossen's Second Law once again.

As we have n goods, we have n-1 such equations. The addition of the aggregate budget constraint equation implies we have a total of n equations. What about unknowns? As prices are given, then all we have to do is determine the amounts demanded/supplied by agents, x1, .., xn. With an equal number of equations and unknowns, we are there and can express our resulting individual demand functions as:

xi = xi(p1, .., pn)

for i = 1, .., n. He aggregates these into market demand/supply functions by horizontal summation over households. Equilibrium is achieved when market demand is equal to market supply in each market. Walras goes on to his unique discussion of the stability of equilibrium via his tatonnement price adjustment process, to which we refer elsewhere. Finally, Walras goes beyond the other pioneering Marginalists in proceeding, in later chapters, to incorporate production, capital and money into his general equilibrium model in a complete and consistent manner.

[Note: William Jaffé (1976) has noted that "instead of climbing up from marginal utility to the level of his general equilibrium system, Walras actually climbed down from that level to marginal utility". This seems evident from reading Walras. As such, at least in Walras's case, one might be tempted to play down the influence of the French utility-cum-scarcity tradition in favor of the other French tradition of "grand systems" of general equilibrium (cf. Cantillon, 1755; Quesnay, 1759, Turgot, 1766; Isnard, 1781).]

(E) Consolidation: the Great Flood

The works of Jevons, Menger and Walras were met with different reactions. Jevons's Theory received various notices and reviews, some of them sympathetic, many of them hostile (Alfred Marshall's (1872) review was noticeably lukewarm). At any rate, one could not fail to notice it. Even textbooks written in the Classical tradition, such as John E. Cairnes (1874) and Henry Sidgwick (1883), were forced to make some note or other about Jevons's new theory.

In contrast, a complete silence surrounded Léon Walras's Elements -- the only notice of the existence of this book were Walras's own follow-up publications, most of them also duly ignored. Walras became aware of Jevons's existence in 1874 and gracefully acknowledged his priority. They took to each other immediately and made a joint effort to spread the word. Something akin to a division of labor ensued: Jevons went off digging up illustrious predecessors in order to enhance the pedigree of the new doctrine while Walras endeavored to establish communication with virtually every important economist of the day. Jevons's task proved to be more rewarding: in his efforts, he helped unearth Cantillon, Cournot and Gossen out of their obscurity. In contrast, Walras just found shut doors and impatient listeners. Only a handful of the economists he contacted responded positively to the new ideas. In frustration, he turned to contemporary mathematicians, only to be dismissed once again.

Menger, who did not exactly cooperate with the Jevons-Walras efforts, went on his own crusade. His 1883 Investigations provoked prominent German-speaking economists such as Gustav Schmoller into a bruising debate on methodology. This Methodenstreit enhanced general awareness of Menger's new theory, but it also bogged him down. In the end, it was somewhat self-defeating: although his fame and reputation were greatly increased in Austria, the entire university system in Germany itself was closed to him and his followers.

The Marginalist Revolution really began only to take off in the 1880s with the publication of the works of a younger generation which had begun to read up on their works. The wide dissemination of the work of two close disciples of Menger, Friedrich von Wieser (1884, 1889) and Eugen von Böhm-Bawerk (1886, 1889), gave the theories of the Austrian School wider attention.

The mathematical tone of Jevons's and Walras's own works attracted a slew of technically-gifted young economists throughout the world. Among these we can count the Englishmen Francis Ysidro Edgeworth (1881) and Philip H. Wicksteed (1888), the Austrians Rudolf Auspitz and Richard Lieben (1889), and, a little later, the American Irving Fisher (1892) and the Swede Knut Wicksell (1893).

The trickle of the 1880s turned into the flood of the 1890s, particularly after the joint discovery of the marginal productivity theory of distribution by the American economist John Bates Clark (1890, 1899), Knut Wicksell (1893), Philip H.Wicksteed (1894) and Enrico Barone (1895). The Marginalist Revolution then went into high gear with the publications of Maffeo Pantaleoni (1889), Vilfredo Pareto (1892, 1896-7, 1906), Knut Wicksell (1898, 1901, 1906) and Giovanni B. Antonelli (1886). Details on the consolidation of the Neoclassical theory of value by these economists are found elsewhere.

Nonetheless, the most significant event of the 1890s was the publication of Alfred Marshall's Principles of Economics (1890). This is notable not so much for the research or insights which it generated, but rather because it was the first really successful Neoclassical textbook. It was through Marshall that the Marginalist Revolution became palatable to contemporary economists -- Marshall's extremely conciliatory attitude towards the displaced Classical School was the sugar that permitted it be swallowed by fellow academics. Through its wide adoption as a university textbook, Neoclassical theory was delivered to a wider public. The infamous "demand-and-supply" diagram with the reversed axes that has since become the standard staple of economics textbooks was a centrepiece of Marshall's book. In other countries, the works of Knut Wicksell, Maffeo Pantaleoni, Etienne Antonelli and others gained wide textbook usage, but in English-speaking countries, despite several efforts at displacement (e.g. by Wicksteed (1910)), the successive editions of Alfred Marshall's Principles remained the dominant text at least until the 1930s.

[Note: Alfred Marshall irritatingly continued to insist time and time again that he had basically formed most of his ideas before he had read Jevons's 1871 volume (cf. Marshall notes and letters in Pigou, 1925), and thus that he should be counted as one of the original "revolutionaries". He pointed to two 1879 articles printed for "private circulation" as evidence of his habit of coming up with new ideas, but not rushing them to publication. However, most historians of economics have concluded that Marshall claims to originality have no basis. It is quite apparent that Marshall did derive most of his own theory after reading Jevons. For further notes on Marshall and his role in the Marginalist Revolution, see Whitaker (1975), Maloney (1985) and Mirowski (1990). In contrast, we should note that John Bates Clark (1885) did arrive at his utility-based theory of price while quite ignorant of the work of Jevons, Menger and Walras -- and thus Clark, but not Marshall, should be given high marks for originality.]

(F) Aftermath: the Great Drought

Although sharing the same underlying Neoclassical theory of value, the different emphasis, approaches and methods of the various pioneering Marginalists on details such as production, money, capital, dynamics, etc. led to the segmentation of the Neoclassical school into various largely independent "schools of thought", rather than consolidation into a "monolothic" Neoclassical edifice. The Cambridge Neoclassicals followed Marshall's approach, the Austrian School followed Menger Böhm-Bawerk and Wieser, while the Chicago School followed a combination of both Marshall and the Austrians. Naturally, the Stockholm School followed Wicksell, and and one can even divide the Lausanne School further intosubsequently distinct Walrasian and Paretian traditions.

However, this segmentation should be treated with caution. Some Neoclassical economists, such as Jevons, Wicksteed and Fisher failed to belong to or develop behind them any clear "school of thought". Furthermore, there was a good degree of cross-pollination among schools -- for instance, the influence of the Austrians on the Swedes (and vice-versa) is well-documented. Finally, there were occasions when several economists attempted to hammer the disparate contributions of the different schools of thought together into a single, all-encompassing "Neoclassical" theory. Such efforts are discernable, for instance, in the 1930s, 1960s and the 1980s, although not always successful.

Finally, we should note that the "Marginalist Revolution" had severer growing pains than this brief account indicates. Initiated in 1871-4, it only began to be noticed in the 1880s and by the late 1890s it was already running out of steam. In the early part of the twentieth century, the Marginalist Revolution was, in fact, retreating on many fronts. The great splash in the 1880s excited both support and opposition and, as a result, it advanced quickly and generated great professional debates that helped it become better known. However, a mere two decades later, we begin to notice that Neoclassicism seemed more and more to have become a peripheral "fringe" movement in the economics profession as a whole.

The reasoning for the Neoclassical retreat in the 1900s is largely because, to many contemporaries, it seemed to be descending into "quackery". Originally, the Neoclassicals had promised that their approach would provide a more sound, "scientific" explanation of economic phenomona than the alternative Classical, Institutional or Historical approaches. However, its Achilles' heel was the very notion of "marginal utility". Marginal utility, let us be frank, is hardly a scientific concept: unobservable, unmeasurable and untestable, marginal utility is a notion with very dubious scientific standing. As Stigler notes, "Had specific tests been made of the implications of theories, the unfruitfulness of the ruling utility theory as a source of hypotheses in demand would soon have become apparent" (G.J. Stigler, 1950).

However, it was given the benefit of the doubt in the 1880s by contemporary economists as a tentative hypothesis that was helpful to economic analysis, but which, hopefully, could be dispensed with later. But it quickly became apparent that rather than being a small part of the Neoclassical paradigm, it was increasingly becoming the "all" of Neoclassicism. Everything was beginning to be reduced with almost religious devotion into this nebulous hedonistic concept and thus seemed less and less "scientific". As Henry L. Moore, an early disciple of Walras, wrote:

"In the closing quarter of the last century, great hopes were entertained by economists with regard to the capacity of economics to be made "an exact science". According to the view of the foremost theorists, the development of the doctrine of utility and value had laid the foundation of scientific economics in exact concepts, and it would soon be possible to erect upon the new foundation a firm structure of interrelated parts which, in definiteness and cogency, would be suggestive of the severe beauty of the mathematico-physical sciences. But this expectation has not been realized." (H.L. Moore, 1914: p.84-85)

The indulgence contemporary economists had granted to the Neoclassical marginal utility hypothesis in the 1880s was largely withdrawn by the 1900s. In contemporary eyes, Neoclassicals were "quacks": they had promised a "scientific" approach and instead yielded up a "religious" approach to economics. Contemporary economists echoed with approval the merciless ridicule that Thorstein Veblen heaped upon Neoclassical quackery. As Jacob Viner was to lament in 1925:

"In the scientific periodicals, however, in contrast with the standard treatises, sympathetic expositions of the utility theory of value have become somewhat rare. In their stead are found an unintermittent series of slashing criticisms of the utility economics." (J. Viner, 1925).

By and large, economists throughout the world withdrew from Neoclassicism and moved back into what seemed like "more serious science": i.e. the empirical approach of the Institutional and Historical schools. There were a few isolated exceptions: at Cambridge, Chicago and Vienna, Neoclassical dominance was maintained through the early part of the 20th Century. At the University of Cambridge (UK), Neoclassicism survived because it was a pretty self-contained place anyway -- "everything is in Marshall", they believed (although things changed considerably after Sraffa's 1926 attack, and particularly, after Keynes's 1936 General Theory). The University of Chicago survived as a Neoclassical bastion in good part because of it was composed of a few strong personalities -- esp. Frank Knight, Jacob Viner, Henry Schultz -- who were gripped by siege mentality (witness their extensive journal forays in defense of Neoclassical methodology). The third exception was the University of Vienna -- which was also energized by a siege mentality and wilful personalities. However, the Austrian Neoclassicals held on there only until the end of the First World War, when they were finally dispersed. Consequently, for nearly thirty years, Neoclassical economics was effectively moribund, being slowly pushed forward by a handful of economists hidden away at Cambridge, Chicago and a few other scattered places .

(G) The Paretian Revival

This state of affairs changed drastically during the 1930s, when the Neoclassicals began rolling back in. The most significant institutional event was the "reconquest" of the London School of Economics by Lionel Robbins in the early 1930s -- and a parallel "half-conquest" of Harvard by Joseph Schumpeter and Wassily Leontief. The formation of the Cowles Commission and the Econometric Society put the Neoclassicals back in touch with each other and the research energy that emerged was remarkable. Paradoxically, Hitler's armies contributed to this process: by expelling many economists from Central Europe, they effectively forced them to reassemble together at places like the LSE, Cowles and other institutions.

But it was the theoretical achievements of the 1930s on the part of a handful of a few young technically-minded economists that saved Neoclassical economics. The Hicks-Allen "ordinalist" revolution and Paul Samuelson's "revealed preference" approach helped remove much of the quackery that stained utility theory. It gained an empirical plausibility which had been missing before -- or at least, in the words of one contemporary economist, it was no longer "repugnant to our logic to suppose that [experiments] can be made" (Ricci, 1933: p.15). Welfare economics, firstly via A.C. Pigou and then through the hands of Harold Hotelling, Oskar Lange, Maurice Allais and the L.S.E. economists (John Hicks, Abba Lerner, etc.), demonstrated that there was still something quite useful in the hypothesis. At any rate, Cassel's resurrection of the Walrasian general equilibrium system, the consolidation of the Neoclassical theory of production, the empirical efforts of Shultz and Douglas, and even Hayek's foray into macroeconomics were all done on the basis of demand functions -- without utility -- thereby demonstrating that there remained huge swathes of Neoclassical theory were not too reliant on that dubious hedonistic concept. All these theoretical developments helped lend "scientific" teeth to Neoclassicism that were previously missing.

The rest of the story is too well-known. After the fervor of the 1930s -- the "Paretian revival" as we have chosen to call it -- Neoclassical theory managed to displace virtually all other theories and approaches from economics. Thus, the "Marginalist Revolution" was not something that just happened in the 1870s, but, in fact, it took at least six decades to entrench itself. Cheekily, some historians have preferred to call the early period merely the "Marginalist Insurrection".

Some would argue it took even longer to attain its monopoly over the economics profession. At least four other important paradigmatic challenges were hatched during the 20th Century which slowed down the Neoclassical ascendancy or at least prevented its complete dominance: Monopolistic Competition, the Keynesian Revolution, Classical-Sraffian counter-revolution and the rise of Game Theory. By the 1980s, the first three had been "beaten back" by the Neoclassicals with different degrees of success; Game Theory, however, has proven to be a far more resilient beast and might conceivably yet undo considerable parts of Neoclassical theory, and perhaps the Marginalist Revolution as a whole, in the future.

Selected References

G.B. Antonelli (1886) "On the Mathematical Theory of Political Economy", as translated in Chipman et al., editors, Preferences, Utility and Demand. New York: Harcourt Brace Jovanovich.

R. Auspitz and R. Lieben (1889) Untersuchungen Eer die Theorie des Preises. Leipzig: Duncker und Humblot.

N. Barbon (1690) A Discourse on Trade.

E. Barone (1896) "Studie sulla Distribuzione", Giornale degli Economisti, Vol. 12, p.107-55; 235-52.

J. Bentham (1789) Introduction to the Principles of Morals and Legislation. 1948 edition, New York: Hafner.

J. Bentham (1802) Theory of Legislation.

D. Bernoulli (1738) "Exposition of a New Theory on the Measurement of Risk", Comentarii Academiae Scientiarum Imperialis Petropolitanae, as translated and reprinted in 1954, Econometrica, Vol. 22, p.23-36.

E. v. Böhm-Bawerk (1886) "GrundzEe der Theorie des wirtschaftlichen GEerwerthes", JahrbEhe fE Nationalökonomie und Statistik. Vol. 13, p.1-82, 477-541. Reprinted 1932, London: London School of Economics.

E. v. Böhm-Bawerk (1889) Capital and Interest: Volume II - Positive Theory of Capital. 1959 translation, South Holland, Ill: Libertarian Press.

P. Boisguilbert (1695) Le Détail de la France. 1966 reprint in Pierre de Boisguilbert ou la naissance de l'économie politique. Paris: Institut d'Etudes Démographiques.

J.E. Cairnes (1874) Some Leading Principles of Political Economy, Newly Expounded.

J.B. Clark (1885) The Philosophy of Wealth.

J.B. Clark (1889) "Possibility of a Scientific Law of Wages", Publications of the American Economic Association, Vol. 4 (1)

J.B. Clark (1891) "Distribution as Determined by a Law of Rent", Quarterly Journal of Economics, Vol. 5, p.289-318.

J.B. Clark (1899) The Distribution of Wealth: A theory of wages, interest and profits. 1927 edition, New York: Macmillan.

E.B. de Condillac (1776) Le Commerce et le gouvernement considérés relativement l'un a l'autre.

A.A. Cournot (1838) Researches into the Mathematical Principles of the Theory of Wealth. 1927 reprint of 1897 translation, New York: Macmillan.

B. Davanzati (1588) A Discourse Upon Coins. 1646 translation.

A.J.E. Dupuit (1844) "On the Measurement of the Utility of Public Works", Annales des Ponts et Chaussés, No. 2, p.332-75. 1952 translation, International Economic Papers, Vol.??

F.Y. Edgeworth (1881) Mathematical Psychics: An essay on the application of mathematics to the moral sciences. 1961 reprint, New York: Augustus M. Kelley.

I. Fisher (1892) Mathematical Investigations in the Theory of Value and Prices. 1965 reprint, New York: Augustus M. Kelley.

F. Galiani (1750) On Money. 1977 translation, Ann Arbor, Michigan: University Microfilms International..

H.H. Gossen (1854) The Laws of Human Relations and the Rules of Human Action Derived Therefrom. 1984 translation, Cambridge, Mass: M.I.T. Press.

W.E. Hearn (1863) Plutology: Or the theory of the efforts to satisfy human wants. London: Macmillan.

F.B.W. Hermann (1832) Staatswirtchafliche Untersuchungen. Munich: Weber.

A.N. Isnard (1781) TraitEdes richesses. 2 volumes. Lausanne.

W. JaffE(1976) "Menger, Jevons and Walras De-homogenized", Economic Inquiry, Vol. 14, p.511-24.

R. Jennings (1855) Natural Elements of Political Economy.

F. Jenkin (1870) The Graphic Representation of the Laws of Supply and Demand, and their application to labor. 1931 edition, London: London School of Economics.

W.S. Jevons (1866) "Brief Account of a General Mathematical Theory of Political Economy", Journal of the Statistical Society of London, Vol. 29, p.282-87. Reprinted as App. III in Jevons, 1871.

W.S. Jevons (1871) The Theory of Political Economy. Reprint of 1931 edition, Charlottesville, Virginia: Ibis.

E. Kauder (1957) "The Retarded Acceptance of the Marginal Utility Theory", Quarterly Journal of Economics, Vol. 67, p.564-75.

G. King (1696) Natural and Political Observations and Conclusions upon the State and Condition of England in 1696. Reprinted in King, 1936, Two Tracts, Baltimore: Johns Hopkins University Press.

J. Maitland, Earl Lauderdale (1804) An Inquiry into the Nature and Origin of Public Wealth. 1962 reprint of 1819 edition, New York: Augustus M. Kelley.

J. Law (1705) Money and Trade Consider'd: with a proposal for supplying the nation with money. 1720 edition, ???.

J. Locke (1692) Some Considerations of the Consequences of Lowering of Interest, and Raising the Value of Money.

W.F. Lloyd (1833) A Lecture on the Notion of Value as distinguishable not only from Utility but Also from Value in Exchange. Reprinted in 1927, Economic Journal: Supp. Economic History, Vol. 1 p.168-83.

M. Longfield (1834) Lectures on Political Economy. 1931 reprint, London: London School of Economics.

J. de Lugo (1642) De justitie et jure.

H.D. Macleod (1857) The Elements of Political Economy. London: ???

H.D. Macleod (1881-6) The Elements of Economics. 2 volumes, London: ???

J. Maloney (1985) The Professionalization of Economics: Alfred Marshall and the dominance of orthodoxy. 1991 edition, New York: Transaction.

H. von Mangoldt (1863) Grundriss der Volkswirtschaftslehre. Stuttgart.

A. Marshall (1872) "Review of Jevons's Theory of Political Economy", Academy, April 1. Reprinted in Pigou, 1925.

A. Marshall (1879) The Pure Theory of Foreign Trade and the Pure Theory of Domestic Values. 1930 reprint, London: London School of Economics.

A. Marshall (1890) Principles of Economics: An introductory volume. 1990 reprint of 1920 edition, Philadelphia: Porcupine.

C. Menger (1871) Principles of Economics. 1981 edition of 1971 translation, New York: New York University Press.

C. Menger (1883) Investigations into the Methods of the Social Sciences with Special Reference to Economics. 1985 edition, New York: New York University Press.

J.S. Mill (1945) "Notes on N.W. Senior's Political Economy", as edited by F.A. Hayek in Economica

J.S. Mill (1848) Principles of Political Economy: with some of their applications to social philosophy. London: G. Routledge and Sons.

P. Mirowski (1990) "Smooth Operator: How Marshall's demand and supply curves made Neoclassicism safe for public consumption but unfit for science.", in Tulberg, editor, Alfred Marshall in Retrospect. Aldershot: Elgar.

H.L. Moore, Economic Cycles: Their law and cause, New York: Macmillan

M. Pantaleoni (1889) Pure Economics. 1898 translation, London: Macmillan.

V. Pareto (1892) "Considerazoni sui principi fondamentali dell' economia politica pura", Giornale degli economisti, p.389-420.

V. Pareto (1896-8) Cours d'économie politique. 2 volumes. 1964 edition, Geneva: Librairie Droz.

V. Pareto (1906) Manual of Political Economy. 1971 translation of 1927 edition, New York: Augustus M. Kelley.

A.C. Pigou (1925), editor, The Memorials of Alfred Marshall. 1966 reprint, New York: Augustus M. Kelley.

S. von Pufendorf (1675) De Officio Hominis et Civis Iuxta Legem Naturalem. 1927 edition, New York: Oxford University Press.

K.H. Rau (1827) Lehrbuch der politischen Ökonomie. 3 volumes.

D. Ricardo (1817) The Principles of Political Economy and Taxation. 1973 reprint, London: Dent.

L.C. Robbins (1932) An Essay on the Nature and Significance of Economic Science. 1984 edition, New York: New York University Press.

J.B. Say (1803) A Treatise on Political Economy: Or the production, distribtion and consumption of wealth. 1964 reprint of 1831 translation, New York: Augustus M. Kelley.

J.B. Say (1815) Cathécisme d'économie politique. 1821 edition reprinted in Say, 1996, Cours d'économie politique et autres essais. Paris: Flammarion.

J.B. Say (1828) Cours complet d'économie politique pratique. 1852 edition, Paris: Guillaumin.

L.A. Say (1822) Consideration sur l'industrie et la législation. Paris: Aillaud.

J.A. Schumpeter (1954) History of Economic Analysis. New York: Oxford University Press.

N.W. Senior (1836) An Outline of the Science of Political Economy. 1939 edition, New York: Farrar and Rinehart.

H. Sidgwick (1883) The Principles of Political Economy. London: Macmillan.

A. Smith (1776) An Inquiry into the Nature and Causes of the Wealth of Nations. 1981 two-volume reprint of 1976 Oxford edition, Indianapolis, Indiana: Liberty Classics.

J. Steuart (1767) An Inquiry into the Principles of Political Economy. 1966 edition, Edinburgh: Oliver and Boyd.

G.J. Stigler (1950) "The Development of Utility Theory, I & II", Journal of Political Economy, Vol. 63, p.307-27, p.373-96.

J.H. von ThEen (1826, 1850) The Isolated State. Volume I translated in Hall, 1966, editor, von ThEen's Isolated State; Volume II translated in Dempsey, 1960, editor, The Frontier Wage.

A.R.J. Turgot (1769) Valeurs et Monnaies (Projet d'article). Reprinted in Turgot, 1970, Ecrits Economiques. Paris: Calmann-Levy.

P. Verri (1760) Elementi dei commercio.

J. Viner (1925) "The Utility Concept in Value Theory and its Critics", Journal of Political Economy, Vol. 33, p.369-87.

A. Walras (1831) De la nature de la richesse et de l'origine de la valeur. 1938 edition, Paris: Alcan.

L. Walras (1860) L'Economie Politique et la Justice: examen critique et réfutation des doctrines économiques de M. P-J. Proudhon précédes d'une introduction a l'étude de la question sociale. 1970 reprint, New York: Burt Franklin.

L. Walras (1873) "Principe d'une théorie mathématique de l'échange", Séances at travaux de l'Academie des Sciences morales et politiques, 1874, Vol. 101, p.97-116. Reprinted in Walras, 1883.

L. Walras (1874) Elements of Pure Economics: Or the theory of social wealth. 1954 translation of 1926 edition, Homewood, Ill.: Richard Irwin.

L. Walras (1883) Théorie Mathématique de la Richesse Sociale.

R. Whately (1832) Introductory Lectures on Political Economy. 1855 edition.

J.K. Whitaker (1975), editor, Early Economic Writings of Alfred Marshall, 1867-1980. London: Macmillan.

K. Wicksell (1893) Value, Capital and Rent. 1970 reprint of 1954 edition, New York: Augustus M. Kelley.

K. Wicksell (1901-06) Lectures on Political Economy. 2 volumes, 1967 reprint of 1934 edition, New York: Augustus M. Kelley.

P.H. Wicksteed (1888) The Alphabet of Economic Science. 1955 reprint, New York: Augustus M. Kelley.

P.H. Wicksteed (1894) Essay on the Co-Ordination of the Laws of Distribution. 1932 edition, London: L.S.E.

P.H. Wicksteed (1910) The Common Sense of Political Economy. 1933 edition, London: Routledge and Kegan Paul.

F. von Wieser (1884) Über den Ursprung und die Hauptgesetze des wirtschaftlichen Werthes.

F. von Wieser (1889) Natural Value. 1971 reprint of 1893 translation, New York: Augustus M. Kelley.

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