Summary

Portrait of Frank Podmore Frank Podmore The Naturalisation of the Supernatural… (1908)

Richard Hodgson, and S. Davey, the investigators of the Society have come to adopt as a working formula that no evidence for the physical phenomena of Spiritualism can be regarded as of permanent value which depends for its validity upon the exercise of continuous observation.
Applying this test to the evidences for the physical phenomena of Spiritualism, we shall find them all wanting. Again and again the proof has seemed all but complete; and always, as the conditions have been perfected so as to close up the last loophole for fraud—always the "spirits" have refused to do their part.
Source: Wikisource

Portrait of Frank Podmore Frank Podmore The Naturalisation of the Supernatural… (1908)

Accurate observation of the phenomena occurring at the ordinary séance is, indeed, rarely possible, because the sitting generally takes place in a subdued light; and, further, because many of the more striking phenomena occur impromptu, when the experimenter, not knowing what to expect, is not fully prepared for observation. But there was one particular manifestation which seemed to offer every facility for investigation,—the performance of writing on slates, as exhibited in England by the American medium, Slade, in 1876, and later by William Eglinton.
Source: Wikisource

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