The following chapters, together with Professor Barrett's comment thereupon, which now figures as an Introduction, originally appeared in the columns of _The Westminster Gazette_. _Those of us who took part in the foundation of the Society for Psychical Research were convinced from personal investigation and from the testimony of competent witnesses that, amidst much illusion and deception, there existed an important body of facts, hitherto unrecognised by science, which, if incontestably established, would be of supreme interest and importance._…
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