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[227] La Revue, Nov. 15th and Dec. 1st.
[228] Essais de Philosophie critique, Paris, 1864.
[229] System der Ethik, 7th and 8th editions, vol. i, p. 199. Berlin 1906.
[230] De Vries, in Biologisches Centralblatt, 1906, Sept. 1st, p. 609.
[231] Dr. Grasset, “La fin de la vie” in the Revue de philosophie, Aug. 1st, 1903.
[232] “Morale et biologie,” Revue philosophique, 1904, vol. lviii, p. 125.