First published in 1825, this book explores the evidence for the existence of ghosts and attempts to prove that they are nothing more than products of the mind. With fascinating historical information and references to popular ideas of the time, "Sketches of the Philosophy of Apparitions" will appeal to those with an interest in ghosts and related beliefs. Contents include: "The Opinions Entertained Regarding the Credibility of Ghost-Stories", "The References of Apparitions to Hallucinations, &c.", "The Opinions Entertained that ghosts were Eternal Ideas, or Astral Spirits", "The Opinions Entertained that Ghosts were Attributable to Fancy or Imagination", etc. Many vintage books such as this are becoming increasingly scarce and expensive. We are republishing this volume now in an affordable, high-quality edition designed for a modern audience.