If the combination is strong enough and is managed well enough, it may be permanent; and prices of paper will be regulated by other laws than the law of competition. But suppose that the number of paper makers is so great and that they are so widely scattered that the combination proves difficult to maintain; local jealousies creep in, and charges are made of partiality on the part of the managers. The combination finally breaks up. Can we expect a perfect return to the old system of free competition? When men have once reaped the enormous returns that are yielded by the control of a monopoly, the ordinary profits of business seem tame and dull. There will surely be attempts to form the monopoly anew on a stronger and more permanent basis; and even if these attempts do succeed in producing only short-lived monopolies, the effect will be to keep the whole trade and all dependent upon it in a state of disquiet and uncertainty. Prices will swing up and down very suddenly between wide limits; and it is everywhere recognized that _stability in price_ is a most important element in inducing general prosperity. A perusal of the trade journals for the years 1887 and 1888 will convince one of the truth that when a combination is once formed, its members are loth to try competition again. A considerable number of combinations which were formed in 1887 were soon broken up, often from the strength of old feuds and jealousies. But in almost every case they have been formed anew on a stronger basis after a short experience of competition. This matter of the variation in price is a very important one, and it has an important influence in checking business prosperity. Men are far less apt to engage in an enterprise, if they cannot calculate closely on prices and profits. But the main point, after all, is the waste which is due to competition. It is for the interest of the public at large that the papermakers should devote all the energies which they give to their business to making the best quality of each grade of paper with the least possible waste of labor and material. Take for a third example two railway lines doing business between the same points. We have fully pointed out the practical working of this sort of competition in the chapter devoted to railways. It is plain that the general effect is a fluctuation of rates between wide limits, an enormous waste of capital and labor, and ultimately, the permanent death of competition by the consolidation of the two lines. In comparing now the above three cases, the most noticeable difference in the conditions is in the _number of competing units_. There were in the first example three million competitors; in the second, three hundred; and in the last, but two.