[5] The Age of Mental Virility, The Century Co., 1908.
[6] “What the World Might Have Missed,” Century, 1908, p. 113, et seq.
[7] “The Age Limit,” Living Age, 1914, p. 214.
[8] “The Old Folks and the War,” Living Age, 1918.
[9] The Psychology of Senescence, Master’s Thesis, Clark University, Worcester, Mass., 1912.
[10] P. Birukoff, Leo Tolstoy, His Life and Work. London, 1906; A. Maude, The Life of Tolstoy, London, 1908.
[11] W. Wundt, Gustav Theodor Fechner, Leipzig, 1901; K. Lasswitz, Gustav Theodor Fechner, Stuttgart, 1896; G. S. Hall, Founders of Modern Psychology, New York, 1907.
[12] See J. Croley, The Love Life of Auguste Comte, Modern Thinker, 2d ed., 1870; also J. Mill, Auguste Comte and Positivism, London, 1907, 5th ed.; also A. Poey, The Three Mental Crises of Auguste Comte, Modern Thinker, 2d ed., London, 1870.
[13] G. Trobridge, Emanuel Swedenborg, His Life, Teachings, and Influence, London, 1911; also B. White and B. Barrett, Life and Writings of Emanuel Swedenborg, 1876; also J. Wilkinson, Emanuel Swedenborg, a Biography, Boston, 1849. See also Emerson’s essay.
[14] See Karl Abraham’s work of this title (Leipzig, 1911), based on Seravia’s biography.