The Heptameron Or Magical Elements of Peter de Abano, written by Henry Cornelius Agrippa, is a book that explores the world of magic and the occult. The book is based on the works of Peter de Abano, a medieval philosopher and scholar of the occult. The Heptameron is divided into seven parts, each of which deals with a different aspect of magic, including the use of herbs, the invocation of spirits, and the creation of talismans. The book also includes...