Beginning in the 1830's as an emergency method of financing in the railroad industry, preferred stock has now become an accepted method of financing a substantial percentage of the normal capital needs of both public utilities and industrials. Originally possessing merely a dividend preference over common which was frequently of a temporary nature, preferred stock has developed into a far different type of contract from common. The investigation of recent issues has revealed that the general voting privilege, a fundamental right of the common stockholder, is no longer granted the preferred stockholder in the typical case. Nor is the pre-emptive right found in his contract. His claim to earnings is cumulative and he does not participate beyond the fixed dividend rate. His shares have a liquidation preference and are callable. Frequently a sinking fund provision results in the maturing of a considerable proportion of the issued stock. Various voting and other protective provisions-discussed in detail previously-provide an opportunity for protecting and strengthening, his priority of claim over the common stockholder as to both earnings and assets. Thus, though legally the preferred stock-holder's position is somewhat weaker than that of a creditor because of the absence of an enforceable contract to pay dividends and repay principal, for all practical purposes his position may now be identical with that of the unsecured bondholder. The strengthening of voting and protective provisions has substantially improved the position of the preferred stockholder. In addition, the higher yield on high-grade preferreds as compared with debt securities of similar companies is a further significant advantage from the preferred stock investor's, point of view. At the same time, preferred stock has undoubted advantages from the issuing corporation's point of view. The "blank stock" provision of state incorporation laws now allows corporate management and underwriter to fit the terms of the particular issue, to current market conditions. Very important, too, is the fact that the cost of preferred stock capital may be much lower than common at a time, as in the postwar period, when common stock earnings are high and, market price/earnings ratios low. The growing use of convertible preferred stock issues by large well-established corporations in the last few years may also be interpreted as an, indirect method of selling, common stock at a more favorable price. This cost factor is particularly important for industries and companies where further debt capitalization is impracticable because of restrictions on additional debt issues or is unwise from the issuing company's point of view. So long as, the preferred stock contract continues to offer such mutual advantages to investor and to issuing corporation, its substantial use in financing corporate capital needs seems assured. [ABSTRACT FROM AUTHOR]