[228a] Kegan Paul & Co., 1883.

[228b] Principles of Psychology, Vol. I. p. 445.

[228c] Ibid. I. 456.

[228d] Problems of Life and Mind, first series, Vol. I., 3rd ed. 1874, p. 141, and Problem I. 21.

[228e] p. 33.

[228f] p. 77.

[228g] p. 115.

[229] Translation of Professor Hering’s address on “Memory as an Organised Function of Matter,” Unconscious Memory, p. 116.

[230] See Zoonomia, Vol. I. p. 484.

[231a] Problems of Life and Mind, I. pp. 239, 240: 1874.