This leads to the subject of “manipulation,” as it is termed, or the uses to which the facilities of the Exchange are sometimes put to give certain stocks an appearance of activity out of proportion to their normal movement. Now we must assume as our major premise in discussing this matter that any artificial interference with the natural operation of supply and demand is pernicious; from the standpoint of economics it is harmful. The Stock Exchange has nothing to conceal, and it recognizes not only that manipulation exists, but that at times it assumes the proportions of a real evil. Therefore it is doing what it can to stop it, and it will continue to do so. Whenever unwonted activity arises nowadays in a security long dormant, as happened very recently in the stock of a certain gas company, the governors of the Exchange entrusted with such things take the matter in hand and put a stop to it if obvious manipulation can be shown after investigation. The public and the newspapers know nothing about it; the vial of their criticism is poured forth only when something escapes the watchful eye of the Exchange authorities, as must inevitably happen now and then. But if these critics could know how indignant the members of the Exchange became when the Hocking Coal episode occurred, and if they could see the resolute determination of all hands to prevent another such occurrence, they would at least give the Exchange credit for faithfully attempting to suppress manipulation of the flagrant sort. The fact is that all forms of manipulation are by no means improper; some of it performs a useful service and is a necessary and legitimate part of the functions of the Exchange. To understand how true this is let us consider, for example, the case of a corporation that has been organized, let us say, to develop a group of recently discovered coal properties in new territory. This is legitimate endeavor as applied to American enterprise; in a broad sense it is the spirit of adventure and speculation that has made our country commercially rich and powerful. Now, in order to develop this enterprise, it is necessary to ask the public to buy its shares or its certificates of debt and thus become partners in the undertaking. In that way our great railways were built and our Western country opened to progress. But the public will not support the new enterprise until it knows something of its merits, and accordingly the company introduces its property through the medium of that great central market-place--the Stock Exchange--furnishing the Exchange authorities with its credentials in minute detail.