[597] Duality of the Mind, p. 84. The same thesis is defended by the late Mr. R. H. Proctor, who gives some cases rather hard to reconcile with my own proposed explanation, in 'Knowledge' for Nov. 8, 1884. See also Ribot, Maladies de la Mémoire, p. 149 ff.
[598] Zeitschr. f. Völkerpsychologie u. s. w., Bd. v, p. 146.
[599] Ueber das Gedächtniss, experimentelle Untersuchungen (1885), p. 64.
[600] Ibid. § 23.
[601] Op. cit. p. 103.
[602] All the inferences for which we can give no articulate reasons exemplify this law. In the chapter on Perception we shall have innumerable examples of it. A good pathological illustration of it is given in the curious observations of M. Binet on certain hysterical subjects, with anæsthetic hands, who saw what was done with their hands as an independent vision but did not feel it. The hand being hidden by a screen, the patient was ordered to look at another screen and to tell of any visual image which might project itself thereon. Numbers would then come, corresponding to the number of times the insensible member was raised, touched, etc. Colored lines and figures would come, corresponding to similar ones traced on the palm; the hand itself, or its fingers, would come when manipulated; and, finally, objects placed in it would come; but on the hand itself nothing could ever be felt. The whole phenomenon shows how an idea which remains itself below the threshold of a certain conscious self may occasion associative effects therein. The skin-sensations, unfelt by the patient's primary consciousness, awaken, nevertheless, their usual visual associates therein.
[603] I copy from the abstract of Wolfe's paper in 'Science' for Nov. 19, 1886. The original is in Psychologische Studien, iii, 534 ff.
[604] Essay conc. Human Understanding, ii, x, 5.
[605] Th. Ribot, Les Maladies de la Mémoire, p. 46.
[606] Biographia Literaria, ed. 1847, i, 117 (quoted in Carpenter's Mental Physiology, chapter x, which see for a number of other cases, all unfortunately deficient, like this one, in the evidence of exact verification which 'psychical research 'demands). Compare also Th. Ribot, Diseases of Memory, chap. iv. The knowledge of foreign words, etc., reported in trance mediums, etc., may perhaps often be explained by exaltation of memory. An hystero-epileptic girl, whose case I quoted in Proc. of Am. Soc. for Psychical Research, automatically writes an 'Ingoldsby Legend' in several cantos, which her parents say she 'had never read.' Of course she must have read or heard it, but perhaps never learned it. Of some macaronic Latin-English verses about a sea-serpent which her hand also wrote unconsciously, I have vainly sought the original (see Proc., etc., p. 553).