Price who had spent most of his life studying psychical phenomena wrote that "There is no good evidence that a spirit photograph has ever been produced."

This intentional inexistence is exclusively peculiar to psychical phenomena.

And so we can define psychical phenomena by saying that they are phenomena which intentionally contain an object in themselves.

The book exposed the tricks of fraud mediums and is a criticism of the claims of psychical phenomena.

As in the book, the film traces the history of psychical phenomena through the last two centuries of Western thought.

Around this time Mirra had regular meetings with students and seekers who were attracted to psychical phenomena or to mysticism.

He was deeply interested in psychical phenomena, but his energies were primarily devoted to the study of religion and philosophy.

During his two years in London he came into contact with people interested in the study of psychical phenomena.

He concluded his review by calling into question Huxley's belief in psychical phenomena.

These things were nightmares, and even in the dreamlands they were not 'physical' but 'psychical' phenomena.