3. _Normal price is spoken of in contrast to market price when the actual market price results from exceptional circumstances and probably will not be maintained._ The term "normal price," much used in economic discussion, is the price which, apart from exceptional conditions, is expected to prevail, and to which actual prices seem constantly striving to adjust themselves. As actual prices are nearly always either more or less than so-called normal price, and only momentarily ever correspond with it, the term "normal" would appear to be something of a misnomer. Moreover, as the circumstances of production change, this normal price itself is altered so that what is normal one day may be quite abnormal the next. The thought of "normal price" is an abstract one, but despite the inaptness of the word it is not without some practical validity. In determining whether he shall continue to produce certain goods, the business man is practically guided by his view of normal price. An example of departure from normal price as above defined, is found in the price of food when an expected ship has failed to arrive at a port with its cargo of grain. A scarcity amounting almost to famine might thus exist in a seaboard city, and the market price would rise; but as this would be due to an accident and would afford a larger gain than usual to those who happened to have a supply of grain, men would say that the market price was above the normal price. The arrival of the expected ship would cause the market price to return to the normal. [Sidenote: Review of the argument] In review, we see that the market value of goods grows out of the different personal estimates made by men. Market value itself being a complex and difficult problem, it can be mastered only by dividing it. First, therefore, must be studied the more general and obvious motives of men, the nature of wants and their effects on man's subjective estimates. The same simple motives that influence the subjective valuations made by individual men, may be traced to the conditions of the complicated market. It is their workings that are seen in the obscurest problems of market price. CHAPTER 6 PSYCHIC INCOME § I. INCOME AS A FLOW OF GOODS [Sidenote: The recurrence of wants]