The influence of limited natural agents in promoting the growth of monopolies is a matter of the greatest importance. That the law is true, is evident upon slight investigation. For if some especial gift of Nature is a necessity to any industry, and those who are engaged in that industry can secure all the available gifts of Nature of that sort, there is no opportunity for new competitors to enter the field.
It is to be noted that in this seventh law we have used in apposition with the term monopoly, the term "inequality of competition" instead of "death of competition," as in the preceding laws. We are now in need of a definition of the term monopoly. Webster defines it as "the sole control over the sale of any line of goods"; Prof. Newcomb says "a monopoly is the ownership or command by one or a limited number of persons of some requisite of production which is not solely a product of human labor"; Sturtevant says "a monopoly is such a control of the supply of any desirable object as will enable the holder to determine its price without appeal to competition." To the first definition we object that it is both narrow and indefinite. The second seems to omit such important classes of monopolies as the combinations to limit competition; and Sturtevant's definition is unscientific in this: Hardly any monopoly exists whose holders can without limit determine the price of its product. If the price continues to rise, competition in some form will appear. Take, for example, the business of transporting goods from New York to San Francisco; if all the railway lines combine to form a monopoly, the competition of ocean steamers via Panama would eventually stop the rise in rates, if no other outside competition stopped it before. The owners of a rich mine have a real monopoly, though they cannot raise the price above a certain point without being undersold by the owners of poorer mines or those more remote from market. Consideration of these facts lead us to construct the following definition: A monopoly in any industry consists in the control of some advantage over existing or possible competitors by which greater profits can be secured than these competitors can make. For the law of monopolies we have: *The degree of a monopoly depends upon