Lord Rayleigh had an interest in abnormal psychological investigations, and became a member and vicepresident of the Society for Psychical Research.
Materia, matter), in philosophy, the theory which regards all the facts of the universe as explainable in terms of matter and motion, and in particular explains all psychical processes by physical and chemical changes in the nervous system.
2 See the articles on Psychical Research; Magic; Conjuring; Automatism; Divination; Crystal Gazing; Hypnotism; Apparitions; Hallucinations; Hauntings, &C.
8 Recently the Society of Psychical Research has.
For an account of these see Proceedings of the Society for Psychical Research, vii.