1920 Covers: Telepathy; Clairvoyance; Crystal-Gazing; Mediums; Trance Mediums; Automatic Writing & Cross Correspondences; Premonitions & Death Warnings; Hallucinations; Haunted Localities; Poltergeists.

This book, first published in 1962, is based on a series of lectures first given at Cambridge University in 1959 and 1960, dealing with 'psychical research' - i.e. the scientific investigation of ostensibly paranormal phenomena. Split into three sections, Professor Broad's study examines numerous issues relating to psychical theory, including guessing, hallucinatory quasi-perception and trance-mediumship.

First published in 2002. This is Volume XV of seventeen in the Philosophy of Mind and Psychology series. The Muirhead Library of Philosophy was designed as a contribution to the History of Modern Philosophy under the heads: first of Different Schools of Thought-Sensationalist, Realist, Idealist, Intuitivist; secondly of different Subjects-Psychology, Ethics, Aesthetics, Political Philosophy, Theology. Written in 1976, this is a collection of essays by a number of well-known philosophers who were invited to write on whichever philosophical issue relating to psychical research interested them most.