[94]. The Nervous System and the Mind (1888), pp. 279-364.
[95]. See Part II., [chap. vii].
[96]. I see no reason for mentioning any authorities except H. Spencer, Principles of Psychology, i., §§ 69 and 96; Bain, Emotions, ch. v.; W. James, Psychology, ii. pp. 474, 475; Fouillée, Psychologie des Idées-forces; Höffding, Psychologie (3rd German edition), vi., B. 3; Lehmann, Hauptgesetze, pp. 261-263.
[97]. See Von Vintschgau, art. “Geruch” and “Geschmack” in Hermann’s Handbuch der Physiologie, vol. iii.; Gley, art. “Gustation”; François-Franck, art. “Olfaction” in the Dictionnaire encyclopédique des sciences médicales.
[98]. Hack Tuke, Influence of Mind upon the Body, p. 181, where other facts of the same kind may be found.
[99]. Galton, in a note entitled “Arithmetic by Smell,” has described an arrangement by means of which he convinced himself that some arithmetical operations can be carried out by the help of olfactory images, as is done by means of visual and auditory representations. He trains himself to regard two whiffs of peppermint as equivalent to one of camphor, and three of peppermint with one of carbolic acid; he performs small additions, and, later on, operates with images only (visual and auditory representations being excluded). For details, see Psychological Review, January 1894.
[100]. The memory of internal sensations, though distinct from that of states of feeling properly so called, approximates so closely to it that the two subjects appear to me inseparable.
[101]. A great swimmer has had feelings of suffocation which he can recall with much vividness.
[102]. Fouillée, op. cit., vol. i. pp. 200, 201.
[103]. Revue positive, 1877, p. 660.