[91] See _supra_, ch. ii. p. 15; also _The World of Life_, by A. R. Wallace, ch. xvii. “The Mystery of the Cell.” [92] Of the conditions which may cause the invisible cloud to become visible we shall speak farther on. [93] See, for a list of these, Flammarion’s _L’Inconnu_, pp. 565–69; also Lombroso’s _Fenomeni ipnotici_, &c., p. 199. The numerous quasi-historical records of the appearance after death of the saints (generally in a cloud-like form) must also not be passed over; though, on account of these records being connected with the various churches, they are necessarily subject to suspicion! [94] We may mention _Death: Its Causes and Phenomena_, Carrington & Meader (London, 1911); and the list of works quoted in the same book, p. 540 _et seq._ [95] Longmans, 1908. [96] “At the end of three hours and forty minutes he expired, and suddenly, coincident with death, the beam end of the scale dropped with an audible stroke, hitting against the lower limiting bar and remaining there with no rebound. The loss was ascertained to be three-fourths of an ounce.” See reference given by Carrington and Meader, _op. cit._, p. 373. The reports of the experiments are apparently given in the annals of the American Society for Psychical Research for June, 1907. [97] See a long account in the _Spiritualist_ for 15th May, 1873; also given by F. d’Albe, _op. cit._, p. 220, _et seq._ [98] See R. J. Thompson’s _Proofs of Life after Death_ (1906). [99] See _Phénomènes de la Villa Carmen_, by Charles Richet, Paris, 1902; also Lombroso, _op. cit._, pp. 194–96. [100] Mr. H. Carrington, in his _Physical Phenomena of Spiritualism_, has described in detail fraudulent methods of photography with which he is well acquainted. Nevertheless he seems to believe that some cases of “spirit photography” are genuine, and gives instances; see his book already quoted _Death_, &c., pp. 359, _et seq._ See also Mr. E. T. Bennett’s book on _Spiritualism_, with introduction by Sir Oliver Lodge, pp. 113–20. [101] See _The Art of Creation_, ch. vi. [102] _The World of Dreams_ (Constable, 1911), p. 107. [103] _The World of Dreams_, p. 190. [104] See _Electrons_, by Sir Oliver Lodge (George Bell, 1910). [105] Say, in millionths of an inch, fifteen millionths for the violet (at the dark line A), and twenty-seven millionths for the red (at B). [106] See, for examples, ch. x. pp. 186–7, _supra_. [107] See document signed by five responsible witnesses and published in the _Spiritualist_ of 15th May, 1873. [108] See _Materializations_, by Mme. D’Espérance, a lecture given in 1903 in London (Light Publishing Co.). [109] See illustrations in _Shadowland_, _passim_.