[Footnote 164: Thus in the Psychical Research Society's 'Report on the _Census of Hallucinations_,' the case is given of an over-worked and worried man who, a few moments after leaving a tram car, had the vivid feeling that some one touched him on the shoulder, though on turning round he found no one near. He then remembered that on the car he had been leaning against an iron bolt, and that, therefore, what he had experienced was doubtless a spontaneous muscular contraction excited by the pressure (_Proceedings, Society for Psychical Research_, August 1894, p. 3). Touches felt on awakening, in correspondence with a dream, are not so very uncommon. Thus Wagner, when in love with Mathilde Wesendonk, wrote, in the private diary he kept for her, how, after a dream, 'as I awoke I distinctly felt a kiss on my brow.'] [Footnote 165: Various pressures lead to dreams of blood. Thus a friend with a weak heart tells me that when he sleeps on his left side he dreams of blood. In some of these cases it is possible that there are retinal sensations of red.] [Footnote 166: In the _Census of Hallucinations_ (chapter ix.) it was pointed out by the Psychical Research Society's Committee that hallucinations are specially apt to occur on awakening, or in the state between sleeping and waking; and Parish in his very searching study, _Hallucinations and Illusions_ (Contemporary Science Series), has further developed this fact and insisted on its significance.] [Footnote 167: Dr. Johnson's remark on this point has often been quoted. He dreamed that he had been worsted in a verbal argument, and was thereby much mortified. 'Had not my judgment failed me,' he said, 'I should have seen that the wit of this supposed antagonist, by whose superiority I felt myself depressed, was as much furnished by me as that which I thought I had been uttering in my own character' (Boswell's _Johnson_, ed. by Hill, vol. iv. p. 5).] [Footnote 168: Maury, _Le Sommeil et les Rêves_, 1861, p. 118.] [Footnote 169: Delbœuf, _Le Sommeil et les Rêves_, pp. 24, _et seq_.] [Footnote 170: Foucault, _Le Rêve_, p. 137.] [Footnote 171: Giessler, 'Das Ich im Träume,' _Zeitschrift für Psychologie und Physiologie der Sinnesorgane_, 1905, Heft 4 and 5, pp. 300 _et seq._] [Footnote 172: See especially Pierre Janet's works, and also those of Morton Prince, Albert Wilson, etc. Flournoy's very elaborate study of Mlle. Helène Smith (_Des Indes à la Planète Mars_, 1900) is noteworthy. A summary of some important cases of multiple personality will be found in Marie de Manacéïne's _Sleep_, pp. 127 _et seq._, and some bibliographical references, _ib._ p. 151.] [Footnote 173: J. Milne Bramwell argues ('Secondary and Multiple Personalities,' _Brain_, 1900) that such cases are not invariably hysterical.]