[172] I find in my students an almost invincible tendency to think that we can immediately perceive that feelings do combine. "What!" they say, "is not the taste of lemonade composed of that of lemon _plus_ that of sugar?" This is taking the combining of objects for that of feelings. The physical lemonade contains both the lemon and the sugar, but its taste does not contain their tastes, for if there are any two things which are certainly _not_ present in the taste of lemonade, those are the lemon-sour on the one hand and the sugar-sweet on the other. These tastes are absent utterly. The entirely new taste which is present _resembles_, it is true, both those tastes; but in Chapter XIII we shall see that resemblance can not always be held to involve partial identity. [173] E. Montgomery, in 'Mind,' v, 18-19. See also pp. 24-5. [174] J. Royce, 'Mind,' vi, p. 376. Lotze has set forth the truth of this law more clearly and copiously than any other writer. Unfortunately he is too lengthy to quote. See his Microcosmus, bk. ii, ch. i, § 5; Metaphysik, §§ 242, 260; Outlines of Metaphysics, part ii, chap. i, §§ 3, 4, 5. Compare also Reid's Intellectual Powers, essay v, chap. iii, _ad fin._; Bowne's Metaphysics, pp. 361-76; St. J. Mivart: Nature and Thought, pp. 98-101; E. Gurney: 'Monism,' in 'Mind,' vi, 153; and the article by Prof. Royce, just quoted, on 'Mind-stuff and Reality.' _In defence of the mind-stuff view,_ see W. K. Clifford: 'Mind,' iii, 57 (reprinted in his 'Lectures and Essays,' ii, 71); G. T. Fechner, Psychophysik, Bd. ii, cap. xlv; H. Taine: on Intelligence, bk. iii; E. Haeckel: 'Zellseelen u. Seelenzellen' in Gesammelte pop. Vorträge, Bd. i, p. 143; W. S. Duncan: Conscious Matter, _passim_; H. Zöllner: Natur d. Cometen, pp. 320 ff.; Alfred Barratt: 'Physical Ethic' and 'Physical Metempiric,' _passim_; J. Soury: 'Hylozoismus,' in 'Kosmos,' V. Jahrg., Heft x, p. 241; A. Main: 'Mind,' i, 292, 431, 566; ii, 129, 402; _Id._ Revue Philos., ii, 86, 88, 419; iii, 51, 502; iv, 402; F. W. Frankland: 'Mind,' vi, 116; Whittaker: 'Mind,' vi, 498 (historical); Morton Prince: The Nature of Mind and Human Automatism (1885); A. Riehl: Der philosophische Kriticismus, Bd. ii, Theil 2, 2ter Abschnitt, 2tes Cap. (1887). The clearest of all these Statements is, as far as it goes, that of Prince. [175] "Someone might say that although it is true that neither a blind man nor a deaf man by himself can compare sounds with colors, yet since one hears and the other sees they might do so both together.... But whether they are apart or close together makes no difference; not even if they permanently keep house together; no, not if they were Siamese twins, or more than Siamese twins, and were inseparably grown together, would it make the assumption any more possible. Only when sound and color are represented in the same reality is it thinkable that they should be compared." (Brentano: Psychologie, p. 209.)