This book investigates the history and findings of psychical research over a twenty-year period. Edward T. Bennett, an author with a background in documenting scientific and historical inquiries, presents an examination of the methodologies, key figures, and debated phenomena within the field. The work aims to provide a comprehensive overview of the progress and challenges faced by psychical researchers during this specific era.

This work appears to be a scholarly compilation offering a historical survey of psychical research. Its focus on a specific two-decade span suggests a detailed, perhaps analytical, approach to the subject matter. The book likely appeals to readers interested in the history of science, parapsychology, and the intersection of empirical investigation with unexplained phenomena.