[208] Perception of Space and Matter, 1879, part ii, chap. 3.
[209] For a very good condensed history of the various opinions, see W. Volkmann von Volkmar, Lehrbuch d. Psychologie, § 16, Anm. Complete references to Sir W. Hamilton are given in J. E. Walter, Perception of Space and Matter, pp. 65-6.
[210] Most contemporary writers ignore the question of the soul's seat. Lotze is the only one who seems to have been much concerned about it, and his views have varied. Cf. Medicinische Psychol., § 10. Microcosmus, bk. iii, ch. 2. Metaphysic, bk. iii, ch. 5. Outlines of Psychol., part ii, ch. 3. See also G. T. Fechner, Psychophysik, chap. xxxvii.
[211] I purposely ignore 'clairvoyance' and action upon distant things by 'mediums,' as not yet matters of common consent.
[212] I disregard consequences which may later come to the thing from the fact that it is known. The knowing per se in no wise affects the thing.
[213] B. P. Bowne: Metaphysics, pp. 407-10. Cf. also Lotze: Logik, §§ 308, 326-7.
[214] Cf. John Grote: Exploratio Philosophica, p. 60; H. Helmholtz, Popular Scientific Lectures, London, p. 308-9.