An exhaustively complete and fully documented book on the published and unpublished codices of occult lore. Never before have been gathered into one volume the processes of magic from the Grimoires, Arabic sources, Great and Little Alberts and the Heptameron of Peter de Abano, with the conjuration of spirits according to the occultists and all the quaint and fascinating textual formulae alleged to achieve the materialization and rulership of the princes of the spirit world. Profusely illustrated.