There are those among us who cannot accept the promise of immortality on faith alone and require positive proof for any such belief. This volume discusses various types of Mediums; how they work, how some trick us, and how some do not use trickery. A sampling of the contents is as follows: spirit slate writing and billet tests; some modern sorcery; unusual mediumistic phenomena; materialization; relation of mediumship to palmistry, astrology and fortune telling; performances of the Annie Eva Fay type.