This distinction, which appears plainly marked in theory, has been much obscured in recent years by the influence of two factors. As the country grew in size, the large corporations--the railroads, for example--required greater capital in order to provide facilities for the handling of their growing business. It was impossible to provide this capital wholly by means of bond issues without destroying the proportion between bonds and stocks, which alone could give to the bondholders the protection of a substantial equity. It was therefore necessary to obtain a large part of the capital required in the form of stock. The railway-managers were thus confronted with a difficult problem. It was imperative that they should obtain more capital, and it was impossible to dispose of sufficient stock on the basis of a speculative risk in a business venture. It was therefore necessary for the railway-managers to emphasize, as far as possible, the investment character of their stock, and various expedients were adopted to accomplish this purpose. In some cases preferred stocks were created or resulted from reorganizations, which possest a first lien upon the assets after payment of the obligations, and which were entitled to a certain stipulated dividend before the common stock obtained any distribution from the earnings. In this way the railway-managers created a compromise security which could be regarded as a stock, and would thus provide equity from the bondholders' point of view, and, at the same time, one which could be disposed of to investors. In other cases, which were probably more numerous, railway-managers attempted to give their stock an investment value through stability of income return. In good years when the company earned 10 or 15 per cent on its stock, their policy was to pay only 5 or 6 per cent in dividends, and hold the rest in their surplus fund in order to have the means of paying the same dividends the next year if only 2 or 3 per cent should be earned. By giving their stock stability of income return they hoped and expected to give it some stability of market price, and thus make it attractive to genuine investors. The effect of this policy was unquestionably successful, and one after another the stocks of our more important transportation systems and other large undertakings passed into the hands of investors.