* Marx treated the Rev. Thomas Robert Malthus (1766–1834) as a serious if minor economist, despite the reactionary ideology in which his theoretical contributions were buried. See Theories of Surplus-Value, Part III, Chapter 19. A comprehensive collection of Marx and Engels’s references to Malthus, chiefly in his capacity as ideologist, can be found in Marx and Engels on Malthus, London, 1953, edited by Ronald Meek.