[(21)] Kampffmeyer, Changes in the Theory and Tactics of the German Social Democracy, pp. 87-88 (C. H. Kerr, Chicago, 1908).

[(22)] Quoted in Kampffmeyer, op. cit., p. 88.

[(23)] Idem, p. 89.

[(24)] Quoted in Jaurès, Studies in Socialism, pp. 75-76.

[(25)] Kautsky, Das Erfurter Programm, pp. 117-119 (8th Edition, Stuttgart, 1907); Cf. also The Socialist Republic, by Kautsky, pp. 10-11.

[(26)] Communist Manifesto, p. 15.

[(27)] Engels, Socialism, Utopian and Scientific, p. 76.

[(28)] Cf. Menger, The Right to the Whole Produce of Labor, p. 117 (Macmillan & Co., London, 1899).

[(29)] Webb, The History of Trade Unionism, p. 145.

[(30)] Idem, p. 146.