[6] Body and Mind, pp. 299-300.
[7] Eusapia Palladino and her Phenomena, pp. 293-301.
[8] Vitality, Fasting and Nutrition, p. 41. For discussions of this question from a variety of different points of view, see Life and Matter, by Lodge; The Riddle of the Universe, Haeckel; The Correlation of Spiritual Forces, by Hartmann; "Consciousness and Force," Met. Mag., Oct. 1910; the article on "Consciousness and Energy," by Professor Montague, in Essays in Honour of William James, and pp. 283-5 of The New Realism, etc.
[9] Bulwer Lytton, with his usual remarkable foresight in things psychic, clearly perceived this. In his story, "The Haunters and the Haunted," he says: "In all that I had witnessed, and indeed in all the wonders which the amateurs of mystery in our age record as facts, a material human agency is always required. On the Continent you will still find magicians who assert that they can raise spirits. Assume for a moment that they assert truly, still the living, material form of the magician is present, and he is the material agency by which, from some constitutional peculiarities, certain strange phenomena are represented to your natural senses.... Accept again as truthful the tales of spirit manifestation in America, produced by no discernible hand—articles of furniture moved about without visible human agency—or the actual sight and touch of hands to which no bodies seem to belong—still there must be found the "medium," or living being, with constitutional peculiarities capable of obtaining these signs. In fine, in all such marvels, supposing even that there is no imposture, there must be a human being like ourselves, by whom, or through whom, the effects presented to human beings are produced."
[10] It should be said, however, that—apart from its innate difficulties—this theory has recently received its death-blow by the discovery of the fact that space is filled with ultra-violet rays, which would soon prove fatal to all forms of life.
[11] See, especially, Duncan, Some Chemical Problems of Today, pp. 63-83 and 97-104.
[12] "Rector" is the name of Mrs. Piper's chief control and amanuensis, during her trance sittings.