Sketches of the Philosophy of Apparitions or, An Attempt to Trace Such Illusion to Their Physical CausesEbookSketches of the Philosophy of Apparitions or, An Attempt to Trace Such Illusion to Their Physical CausesbySamuel HibbertRating: 0 out of 5 stars0 ratingsSave Sketches of the Philosophy of Apparitions or, An Attempt to Trace Such Illusion to Their Physical Causes for later