Fetter The Principles of Economics

CHAPTER 11

REPAIR, DEPRECIATION, AND DESTRUCTION OF

WEALTH: RELATION TO ITS SALE AND RENT

§I. REPAIR OF RENT-BEARING AGENTS

1.The continued rent of indirect agents is dependent on the continual repair of certain parts necessary for their efficiency. All earthly things wear out or decay. Whenever man’s hand is withheld, nature takes possession of his work, regardless of his purposes. Dust gathers on unused

clothes, and moths burrow in them. Shut up a house, and windows are shattered, roofs leak, and vermin swarm. To close a factory is to hasten the time when buildings and ma chinery will be piled upon the rubbish heap. The most magnificent and solid works of man have crumbled under the finger of time. The earth is strewn with ruins of gigantic engineering works, aqueducts, canals, temples, and monuments, whose restoration would be no less a task than was their first building. Everywhere vigilance and repairs are the conditions of continued uses of wealth. Some works of nature, such as waterfalls, may appear to have a continued use without repair, but they bear rent only when used with other things that must be constantly mended. A certain amount of labor on the banks of the mill-stream, and certain repairs on the dam, the water-wheel, and the gates are necessary. By a fiction in business contracts the waterfall may be dealt with apart from those conditions to its use, and may be rented, as a field is, with the agreement that the tenant keep up the repairs. (p. 82)

The efficiency of land as mere standing-room usually does not seem to be dependent on repairs. But here again the land yields rent in connection with other rent-bearing agents (such as houses and other agents above ground), which must be repaired. Standing-room on land is not a complete indirect agent; it is but one of the conditions for carrying on an industry, and even it often requires repairs to make it usable. Ranging from these extreme cases of stableness and durability, indirect agents vary to the extremes of fragility and ephemeralness.

2. Most of the qualities that contribute to make land fertile in agriculture being destructible, the constant repair of tilled land is necessary to its continued fertility. If any things could be said to be indestructible, they would be some of the works of nature. In a sense, all matter is indestructible. Man cannot annihilate it, he can simply change its condition. But in economic discussion it is the value of things that is being considered, and from this point of view everything is in some degree destructible. The effects of bad husbandry are everywhere apparent, and in many regions fertile fields have been physically and economically destroyed. In Asia, lands that once supported millions, perhaps hundreds of millions, of population are now deserts. Egypt, for a time reduced to a semi-desert condition, has only in the past century been restored to a certain extent by the use of new methods and a return to the old ones. Many of the areas that were the granaries of Rome can now hardly support a sparse, half-starving population. The lands, or at any rate, the elements that gave them value, have been destroyed.

Even in young America may be seen the effect of a failure to keep land in repair. As the new rich lands of the West were opened up, the old lands in the East were allowed to wear out, and many of them were abandoned. On the new lands in turn the same methods were followed, using up the first rich store of fertility with no attempt to keep up the quality of the soil. This may have been the best policy for (p. 83) the time; it would not have been economical to employ Old World methods of intensive husbandry when such rich extensive areas were being opened up.

REPAIR AND DEPRECIATION OF WEALTH

53

But the process was one destructive of natural resources. As settlement moved westward, great forests fell in ashes, and the soil was robbed of the fertile elements which it had taken centuries for nature to store up.

3. The machinery and appliances used in transportation and manufacturing are all perishable in varying degrees. Take as an example the great agency for transportation, the railway. The roadbed, which is but the natural soil excavated or filled to a better grade, is the most permanent part; yet every frost weakens, every rain undermines, a portion of it. Earthquake, landslide, and flood fill up the ditches, or tear down the embankments. Constant work is needed to keep it fit and safe for use. Above this is the track, slightly less permanent, more frequently changed. The ties rot, and even the rails of steel must be at times replaced. The rolling-stock is still less durable, and the different parts vary in length of life. It is said that the wheel-tires are renewed four times, the boiler three times, and the paint seven times, before a locomotive is entirely worn out. The oil used in the wheel, which is a necessary part of the running machine, has to be applied every day.

There is a great difference in the length of life of manufacturing appliances. The building is fairly durable; yet an average depreciation-rate of one and one half per cent. a year must be allowed to offset a reduction in its value of over fifty per cent, in thirty years. Machinery differs greatly in durability; wellmade, substantial machinery depreciates about five per cent, yearly. The engines and boilers depreciate more rapidly than the running gear; the loose tools have to be replaced every second to fourth year; while the materials consumed in the industry must be repaired and replaced at every repetition of the process of manufacture. If a factory is to be maintained in its efficiency in accordance (p. 84) with the terms of the renting contract, and is to continue its renting power, everything about it must be from time to time repaired and replaced.

4. Neglect or postponement of repairs must cause a falling off of the rent-earning power.

The neglect of repairs may have different results in the factory. The neglect of one kind simply reduces present rental while not preventing the future restoration of the plant to its full efficiency. If certain necessary tools wear out and are not replaced, the factory as a whole will be less efficient. Each part of the entire outfit being needed in due proportion, the loss in rental will correspond not merely to the lost efficiency of the missing tools, but to the crippled efficiency of the remaining appliances. Failure to apply seed to the land causes the land as a whole to be useless for that year’s crop. In other cases, neglect of repairs increases the expenses of repairs and cuts off future rental. The adages, “A stitch in time saves nine,” and “An ounce of prevention is worth a pound of cure,” must be acted upon in every industry. The neglect to repair a roof causes damage to an amount many times the cost of a new roof. Failure to replace a bolt costing five cents may result in the rack and ruin of a machine worth many dollars. A handful of earth on a dike may save a whole country from destruction.

Neglect of repairs may be economical, however, when outer conditions have first reduced the demand for the agent and consequently the rental. When the line of travel changes, it does not pay to keep an old hotel up to the same state of repair as when it had a great patronage. Old factories sometimes may better be allowed to depreciate while the price of repairs is invested in more prosperous industries. In a declining neighborhood the houses fall into decay, the owners seeing that “it would not pay” to keep them up. (p. 85)

§ II. DEPRECIATION IN RENT-EARNING POWER OF AGENTS

KEPT IN REPAIR

54	THE PRINCIPLES OF ECONOMICS

1. Even where repairs are thoroughly kept up and present rent is undiminished, future rents may be decreasing because of natural decay. Changes go on in the substance of things which cannot be prevented by any attention to repairs. The wood in a framework will decay, the metals crystallize. There is also an unpreventable wear of parts that cannot be replaced without replacing the whole machine. It is the aim of the modern manufacturers to make machines like the wonderful onehorse shay, every part of equal durability. The development in America of the system of “interchangable parts” has greatly simplified and cheapened repairs, and has lengthened the working life of machines; neverthe less their lot is the scrap-heap at last. This general depreciation appears to be nearly avoided in large factories where there is serial replacement of the parts, but occasionally some invention or some improvement of process necessitates an almost completely new equipment. An old man once said to me: “I have lived in this house forty years; it was well built, has been repainted regularly, has never been allowed to leak a drop, and it is as good as it ever was. I see no reason why it could not be kept to eternity if always kept in repair.” But the same could not be said of the house now. In general, there is finally a termination of the rent-earning power of wealth, and the whole has to be replaced.

2. A change in inventions and processes may reduce the rent of agents, independently of their material condition. Rent is dependent on the indirect relation of things to wants; that relation may be changed if some other agent is found fitted to serve these wants more directly. Not only do the materials of houses change, but fashion and engineering skill change, making the old mansions cheerless and inconvenient, (p. 86) and affecting their rent-earning power. At every moment, in a progressive society, many rent-earning agents are being thrown out of use. The machinery in flourmills has been almost completely changed, parts of it repeatedly, while the roller process has been substituted for the old millstones. Water-power, because of its uncertainty, has been replaced in many places by steam-power, and in many places steam-power in turn has been rivaled by water-power since the improvements in the generation and transmission of electricity. A change in the process of making paper threw out of use much machinery that was only in part saved by its removal and adaptation to the making of coarser grades of paper. Many minor inventions in the iron industry, still more the invention of the Bessemer process, threw out of use great numbers of the old appliances.

3. A change in the outer conditions that give occasion to the use of agents may cause depreciation. The exhaustion of materials on which machinery is employed may reduce its usefulness. A sawmill located in the midst of a forest has a high-earning power while the forest lasts, but when the forest is cut off the mill itself declines in value. Unless it can be removed to another forest and thus have its earning power renewed, it will have the value only of scrap-iron; it has become an indirect agent in the wrong place. Oil-boring machinery where a rich supply of oil is found has a high rental for a time, but when the oilfields give out the ma chinery falls in value, being worth more or less than the cost of transporting it according as the next oilfield is near or far. Changes in fashions, calling for different kinds of products, cause a depreciation in the value of the old agents. Coarse salt, evaporated by the sun, was used by our fathers, but the finer product of the steam process is driving out the product of the old solar plants. As homespun went out of use, much machinery still in good physical condition was cast aside. Changes in transportation work revolutions in indus trial methods. Many prosperous small forges on the country (p. 87) roads of Pennsylvania became valueless after the building of the railroads. New forges were built at favored points where materials and products could be shipped by rail.

4. The agents employed in any industry range from the more efficient, high rent, down to the less efficient, low rent, grades in a more or less regular series. It follows that as these changes

REPAIR AND DEPRECIATION OF WEALTH

55

are going on, the place of agents on the scale of efficiency is constantly shifting. The various agents represent all grades of efficiency. One depreciates, possibly is restored later and takes a high place, and again depreciates until finally it is thrown out of use. One loom embodies the latest improvements and corresponds to the most fertile field; another can still be made to yield a little rent; the use of a third results in certain loss. A great mass of no-rent agents lie just below the margin of utilization in every industry. Some of these are permanently abandoned; some will be taken back into use when business conditions improve. When the iron industry is dull, many forges are out of blast; but when iron is again in demand, there is a gradual taking up of the abandoned forges, factories, and machines as they are brought within the margin of profitable utilization. Many agents not actually earning a rent, may become rent-earning through a change in business conditions.

§III. DESTRUCTION OF NATURAL STORES OF MATERIALS

1.A large part of industry is now conducted without regard to the preservation of the source of income. A striking example of this is the use, or rather the destruction, of the American

forests. In the last century the demand for lumber grew rapidly both on account of domestic needs and of the needs of the older countries. Great quantities of wood have been used and still greater quantities wasted, trees being girdled, the ground burned over, the timber destroyed in any way that would clear the soil—timber which to-day would be of far more value than is the cleared land on which (p. 88) it stood. Considering present needs and conditions, the labor seems to have been worse than wasted.

The direct effect of this destruction of the supply has been the increase in the value of timber. To the settlers much of the timber was worse than useless; they paid and labored to get rid of it; now the supplies of lumber must be sought on the very margins of our territory: Florida, Maine, northern Michigan and Wisconsin, Washington, and Oregon. The supplies in Washington and Oregon are almost unavailable in the Eastern states on account of the cost of transportation. Professor Marsh, thirty years ago, strikingly characterized the policy that has been pursued: “We are breaking up the foundation timbers and the wainscoting of the house in which we live in order to boil our mess of pottage.”

The indirect effects of these changes are fully as great as the direct ones. Forests greatly affect climate, temperature, and soil; they influence the humidity. They equalize the flow of streams, moderate floods, and by preventing the washing down of the rich soil, keep the mountain sides from becoming bare and sterile rocks. So, within the last two decades, the people in America have begun to think of forestry. Its purpose is to restore the forests to the condition of perma nent rent-earners, to make the mountains yield not a temporary supply, but a perpetual crop of timber.

2. The extraction of coal and other mineral deposits reduces for future generations a supply already limited. The coal deposits in the earth have only recently been drawn upon. A small city like Ithaca probably uses to-day a greater quantity of coal than was used in all Europe two centuries ago. The large deposits of coal and their early development in England long gave a great advantage to English industry over that of other countries. In England, however, has first been felt the fear of the exhaustion of the coal-supply. Professor Jevons, in 1865, sounded the note of alarm; he prophesied that because the coal deposits of America were many times as great as those of England, industrial (p. 89) supremacy must inevitably pass to America. Already the supremacy in coal and iron production has passed to America, and that in textiles soon will come. In England the accessible supply of coal is limited, deeper shafts must be sunk, and the

56	THE PRINCIPLES OF ECONOMICS

coal gotten with greater difficulty and at greater expense. Coal has risen in price in England within the last few years, and will continue to rise in the future. The coal deposits of America are thirty-seven times as great as those of England, but even these will soon be exhausted. And yet on the part of all except the coal trust, there appears in America a thoughtless disregard for the future. Supplies of copper, iron, and lead in favored positions are likewise limited, and are being rapidly centered in the hands of great companies. The increasing demand for these products insures a steadily rising income from their annual use. The value of the mines, being based on the series of incomes they will yield, may increase while their unused treasures dwindle in quantity.

3. The exhaustion of natural stores of material is due to civilization, but it threatens to put an end to industrial progress. The savage does not go deep enough to use up permanently the world in which he lives. He uses the fruits that he finds, and those fruits are, almost without exception, renewed the next year. - The only mines that were worked out in ancient times were gold and silver mines, while the mines of useful metals were touched but lightly. Within the last century the earth’s crust has been exploited with startling rapidity. Scientific knowledge and mechanical improvement have combined to unlock the storehouses of the geologic ages. At the ever-increasing rate of their use, many important materials must be exhausted in the not far distant future. While it is probable that substitutes will be discovered for many of them, the outlook in some directions has little promise To treat terminable incomes, exhaustible sources of supply, as permanent sources of income, leads alike to unsound theory and to reckless practice.

CHAPTER 12

INCREASE OF RENT-BEARERS AND OF RENTS

§ I. EFFORTS OF MEN TO INCREASE PRODUCTS AND

RENT-BEARERS

1. While man destroys some agents of production he multiplies many others. We have noted many kinds of depreciation, destruction, and wearing out of wealth; but the normal thing in a healthy society is an increase, on the whole, of rent-bearers. The increase of rents is due to two causes: changes in the agents by which they become more efficient technically, or more numerous; and changes taking place outside of the agents, affecting the utility of the products. The first of these will be considered in this section.

The increase of the efficiency of agents is usually the aim of the individual producer, and thus is brought about an increase of the stock of wealth. In some cases, however, improvements such as the dredging of harbors or as the protecting of forests, are made by men collectively through the agency of governments. Somewhere, however, the desire for these changes must arise in the minds of individuals. Increase of most things involves “cost” or sacrifice, in the psychological sense; that is, man must strive, perhaps suffer, to get a certain result. This end, therefore, must be in itself desirable, and social organization must be such as to present a motive to the men to make the needed effort.

2. Rent-bearers may be increased in quantity and improved in quality by the adaptation of natural resources to man’s purposes. To get food, men use the tracts of land that under the conditions give the largest product. Other tracts (p. 91) less fertile, or for some reason less available, are ditched, tiled, and diked, and fertilizers are carried up steep hillsides to make a soil upon the very crags. In commerce and transportation, new ways are opened by canals, railroads, and tunnels. An isthmian canal will raise the efficiency of ships plying between New York and San Francisco, enabling them to carry a greater amount of freight within a year. The tolls will represent to the users an expenditure only partially offsetting the increased efficiency of the agents of transportation. By the building of wharves, the dredging of harbors, and by many other methods, indirect agents are constantly growing in number and efficiency.

3. Rent-bearers may be increased by inventions and improvements that mak e machines stronger, quicker, and better. This proposition is not logically different from the preceding. A machine is an arrangement of material things through which force may be indirectly applied to move matter. No fast line divides machinery as regards form, purpose, or cause of value, from the artificially improved natural agents that we have been discussing. Just as a field is drained, plowed, and cultivated to fit it better to yield a crop, so is the iron ore shaped into a form called a machine, better fitted to cut, carve, and weave as man wills. Machines are merely adaptations of natural resources.

Increase in machinery may be either in quality or quantity. The two causes have in most cases the same result. If the quality or efficiency of looms is doubled, it is as if their number had grown in like proportion. In its economic func tion the beast of burden may not illogically be classed with inanimate machines. The horses in America have been remarkably improved of recent years by the importation of thoroughbred stock from Europe. Ten or fifteen years ago the number of horses in the United States was found to have decreased, and there was much comment on this evidence of a declining industry. It was not at once recognized that there was embodied in horse-

58	THE PRINCIPLES OF ECONOMICS

flesh more horse-power than ever be- (p.92) fore, as a single Norman horse has the strength of several Mexican mustangs. Numbers alone are not the measure of efficiency.

4. The increase of wealth and the betterment of environment go on as well through the increase in the number of appliances and through their improved arrangement, as through changes in their kind. A machine is an adjustment of va rious natural agents to each other so as to make a more efficient agent, and machines in turn may be adjusted as parts of a larger system of production. The ideal of the modern factory system is so to arrange the machinery that no bit of material will make an unnecessary motion. The log, once started through the mill, is carried automatically from one machine to another until it emerges as a roll of paper or as a box of tooth-picks, ready for use. In an American watchfactory one man tends twelve or fifteen automatic machines. A small brass rod is fed automatically to the machine; a piece is cut off, is picked up by a humanlike metal hand; is put into a lathe, and shifted or held firmly while it goes through fifteen or twenty processes; and then is dropped into a box where it is ready for the “assembling” of the watch. As the machinery improves, factories making allied products are grouped to make a system still more efficient.

As the number of agents increases they are distributed so as to be where most useful to the owner. A man having two umbrellas keeps one at his office and the other at home; a student having two books of the same kind keeps one at his room and the other at the university; a farmer having two hoes keeps one at the barn and the other in a distant field, and by this distribution the agents are increased in efficiency.

The aim of a progressive society is to enlarge the environment, and constantly to adapt it better to the service of wants. This is done largely by mechanical agents, which capture the natural forces of the world, put them into the right place at the right time, and make them do the right thing, or which group and relate the materials of the (p. 93) world in the right ways. Some of the groupings in the chemical and physical world that do not fit man’s purposes may be made to do so. The world in this way becomes more and more a great workshop, better and better adjusted to man’s wants.

5. The betterment of the environment of society in some directions reduces the rent of other parts. The wish of the individual is to raise his own rent-bearers in efficiency, but in doing that he affects the agents owned and controlled by others. The ideal from a social standpoint is to increase not rent but the welfare of society, and this is not always the ideal of individuals seeking their own interest. However, as the efficiency of some agents rises, it becomes unnecessary and unprofitable to use the less fertile fields; they cease to be rent-bearers, and the rent of the richer fields falls under the influence of the new supply of products. Some inventions suddenly increase the efficiency of free goods to such a degree that the less efficient rented agents are thrown out of use, and the margin of utilization is moved to a higher plane than it was on before. Improved types of machinery more or less rapidly displace the older, less efficient types, which, therefore, more or less completely lose their rent-bearing power long before they are physically worn out. When improvements in agriculture that are applicable to a considerable area of land take place, and the product thus is increased and cheapened, the poorer land is abandoned. Inventions and improvements thus gradually becoming common property, increase the free goods and free uses not bearing rent and open to every one. One who improves the quality of a machine or the economy of a process may thus unintentionally injure some of the owners of low-rent agents, while unintentionally increasing the welfare of the mass of men for whom the margin of utilization is thus lifted. (p. 94)

§ II. EFFECTS OF SOCIAL CHANGES IN RAISING THE RENTS OF

INCREASE OF RENT-BEARERS AND OF RENTS

59

INDIRECT AGENTS

1. Changes in the number and kind of competing resources may raise the rents of particular agents. Rents may increase without increase in the quantity or number of a particular group of agents or without change in their technical efficiency. As changes in the conditions of society may reduce rents, so other charges may increase them. Agents of the same kind may diminish in number, either absolutely or relatively. If some of the competing machines are destroyed, the rents of the machines that remain rise, while if new supplies are found, either in nature or by improved industrial processes, the rents of the older agents fall.

2. The discovery of new uses for agents or for their products raises their rents. Farm land of the poorest kind often is found to contain valuable mineral deposits. Such a lucky find has lifted the mortgage from a farm in eastern Pennsylvania, from which, in two or three years, has been taken feldspar exceeding in value the agricultural products of the same land in the last fifty years. The discovery of building stone, coal, natural gas, or oil land may make the annual rent (or royalty) of land tenfold its former total value. Fitness to produce nettles is not ordinarily a virtue in land, but the discovery that certain fields produce a superior quality of the nettle used for heckling cloth, causes them to take on a new value. A mineral spring, because of the supposed or proved healing properties of its waters, may be as good as a mine to the owner. Peculiar fitness for the cultivation of celery may convert marsh land into a substantial source of income.

Social changes are constantly causing agents to shift from lower to higher uses. As population grows and groups about new industries, farm land is used for residence lots, and in turn for business purposes. Rents therefore rise, and this (p. 95) rise is reflected in the higher selling value of the land. If a new demand arises for the product of any machine, its rent rises, although it may continue to turn out the same product as measured by number or quantity. For, if consumers increase, a given supply of agents becomes relatively smaller than before.

3. A rise in rents due to social changes may be relatively permanent or temporary. Business conditions sometimes change quickly. An urgent demand for special machinery raises quickly its rent and value. It is said that lace ma chinery is sometimes thrown out of use for several years until a sudden renewal of the demand for lace causes the rental to equal, in two years, more than the original cost. At such times the value of factories increases greatly, but after a few years of prosperity business again collapses. Such prosperous periods are the opportunity of the business man and of the promoter to sell the factory at its highest price. Machinery adapted only for a special product will not sell as readily when less needed for its special use, as that which, like a turninglathe, can be used for many purposes; but the more special the appliances needed for a certain product, the higher, more abnormal will be their temporary value when they are suddenly needed. Land near the site of an exposition takes on a very great value and again falls after the exposition is over. During the Boer War horses and mules rose in price in the United States on account of British pur chases.

A rise in the value of any agent at once causes an attempt to duplicate it or to find a substitute for it; this attempt, if successful, puts a check or sets a limit to the rise. In this search for new devices the man who can see most quickly and clearly has a key to wealth. Some kinds of agents, as rare minerals or tools that can be produced only by highly skilled labor, cannot be increased rapidly in number and remain high in price for a long period; and favorably located building sites illustrate the same principle. In some cases, (p. 96) it is true, the demand may be due to some temporary cause, as in a period of unsound land speculation, but usually the growing value of location is due to a steady and abiding change in population or business.

60	THE PRINCIPLES OF ECONOMICS

4. Such public utilities as are guarded from competition by franchises, often rise in rental with increase in population. The leading classes of public utilities referred to are water-works, - gasworks, street-railways, ferrie s, and wharves. This evidently is only a special illustration of the principle just stated, where it is not easy to find a substitute for certain agents. Public franchises entitle the owners to special, some times exclusive, privileges, and protect them legally from competition. Not all franchises are valuable; many street-railways are unfortunate ventures, the earnings being insufficient to pay expenses, to say nothing of interest on the investment. But when they pay greatly, their high value is due to the impossibility of competition. The cars, mules, dynamos, steam-engines, and other agents combined to furnish transportation, have a special earning power because other similar agents are forbidden to be used in that market.

5. Industry abounds with cases of unearned increments of value due to accidental and social causes raising the rents of wealth. The term unearned increment may be defined as an increase in rents (or value) of agents, due to something other than the efforts or merits of the owner; in fact, it is that of which we have been speaking. In some cases powerful or wealthy men can bring about social changes in entirely legitimate ways. The owner of a large factory, moving it into the country, may buy up surrounding land and found a city, converting pasture lands and cornfields into valuable building lots. Again, social changes are produced immorally, if not illegitimately, when wealthy men or influential politicians cause laws to be passed which inure to their advantage but which may ruin many other citizens.

In most cases, however, social changes are impersonally caused. The individual owner who profits by them is pow- (p. 97) erless to affect the result. He can only adapt his conduct in some measure so as to reap an advantage. He can strive to increase the number and quality and to get control of such agents as he foresees will yield higher rents. In making such a forecast there is chance of loss as well as of gain. The term “unearned increment” has been frequently used in recent years. It is often assumed to be a peculiar thing, sharply in contrast to other changes in value. The foregoing hasty review may serve to suggest how manifold and complex are the instances of it, and what an important part it plays in modern industry.

DIVISION C—CAPITALIZATION AND TIME-VALUE

CHAPTER 13

MONEY AS A TOOL IN EXCHANGE

§I. ORIGIN OF THE USE OF MONEY

1.The exchange of goods by barter is extremely difficult in most cases. Thus far we have not considered the subject of money and have so far as possible avoided even the use of the term. Value in economics does not depend on money, and is not necessarily connected with it. Things

can be compared in their utility, their importance to our welfare can be estimated, without the use of money. Many problems of economics can be discussed pretty thoroughly and solved without the use of the word money or any term of similar meaning. But to-day it is impossible to go very far in the discussion of economic questions without using the concept of money, which is interwoven with every practical and theoretical problem in economics. We have delayed to the farthest limit the formal recognition of the subject; but we are now approaching the question of capital and interest, and it is no longer possible to avoid a preliminary consideration of the money concept.

In considering the problem of exchange of consumption goods, we have assumed that it is possible to weigh small differences in the marginal utility of goods, and that such (p. 99) differences have influence on exchange. Now in exchange by barter such a small estimate is impossible. In barter things are exchanged directly for each other in kind. If the two things do not chance to coincide in value, the exchange cannot be completed. An equivalent must be found, or a multiple, if the marginal utility of two goods is to be equalized for either party by exchange. As in most cases this adjustment must be very incomplete, many exchanges that otherwise would be advantageous cannot take place. In the earlier stages of development, this careful estimate of value is not found. Children do not make it. The typical trade of the small boy is a “trade even”; Johnny exchanges his gingerbread for Jimmie’s jack-knife. It marks an epoch in the industrial development of the boy when he begins to keep store with pins, and no longer trades candy for apples, but both for pins, which have become the medium of exchange in his boy world. He then can express values in much more exact terms. In our society most children begin early to grow familiar with this conception; but travelers find some savage tribes still in the earlier childish stage of development, unable to grasp the thought of a general medium of exchange. When, through lack of a medium of exchange, there is a failure to adjust utilities, there is a loss of the possible advantage in each defeated exchange. There is a further waste of time and of vain efforts to find something that will be accepted in exchange, and the loss offsets a large part of the gain even when the barter is effected.

2. Some kind of enjoyable good in general use comes to be money, that is, to be accepted as a medium of exchange. The difficulties just mentioned are met by the use of a medium of exchange. A medium of exchange is simply one kind of wealth which is taken, not for itself, but to pass along, in the belief that it will enable the taker to gratify his wants and distribute his purchasing power in a more effective way. Money is an “invention” in that it is a means of exchange that came into use independently in a great (p. 100) number of communities. It is not an invention in the sense of a mechanical device suddenly hit upon, but rather in the sense of a