Four schools of economic thought are contending in the present depression: individualistic democracy from Adam Smith; collective democracy of the past thirty-five years; fascism from Pareto and Spann; communism from Karl Marx, who predicted fascism as preceding communiism. The first quantitative interpetation of Marxian theory is Corey's The Decline of American Capitalism. Disucussion covers differnces in quantitative inrerpretations drawn by him from the Census of Manufactures and by the present writer from the Statistics of Income of the Internal Revenue Department; also rate of profit and margin fro profit.