Elementary Treastise on Practical Magic: Adaptation, Practice, Theory of Magic: with an Appendix on the History and Bibliography of Magical Evocation and a Dictionary of Folk Magic, Love Potions, etc.

Born in Coruña, Spain on July 13, 1865 to a French chemist and his Spanish wife, Gérard Anaclet Vincent Encausse, the family moved to Paris in 1859, and he was raised and educated as a Frenchman. Clearly affected by his father's profession, Encausse studied medicine, and after becoming Head of the Laboratory of the Laboratory of Hypnotherapy at La Charité Hospital, in Paris; and in 1894, received his Doctorate in Medicine following his presentation on Philosophical Anatomy. Indeed, throughout his career he used his extensive knowledge of physiology, neurology, physiology and hypnotherapy to underpin his esoteric 'experimentation'. He died on October 25, 1916, when he contracted tuberculosis while working at a field hospital during World War I. He is mainly remember under his nomen esotericum, Papus. A disciple and devotee of Eliphas Lévi', he took the name he took from that esoteric author's book "Nuctemeron of Apollonius of Tyana" the word translates as 'physician'. A lifelong student of the occult, he studied Kabbalah, Tarot, Hermeticism, Magic, Theurgy and Alchemy, before co-founding his own order, the Ordre Kabbalistique de la Rose-Croix in 1888. He also founded the monthly revue l'Initiation, which, with a few quiet period, continues to this day. He claimed Maître Philippe Nizier, the Lyonnais mystic, and the Marquis Joseph Alexandre Saint-Yves d'Alveydre among his mentors. His membership expanded to a number of organizations, including the Hermetic Brotherhood of Light, and his crowning achievement, the founding of the Order Martiniste in 1887, and became Grand Hierophant of the Antient & Primitive Rites of Memphis and Mizraïm in 1913, on the death of John Yarker. A critic of organized religion, he was an enthusiastic supporter of the Église Gnostique of Jules Doinel, becoming a bishop of that church founded on the Cathar heritage in 1893. His written output was prodigious, both in his many articles for l'Initiation, La Voile d'Isis and other revues and pamphlets; and in his books, which included The Tarot of the Bohemians, The Devil and Occultism, The Science of the Mages, Contemporary Occultism, and this present book.

Piers Allfrey Vaughan was born in Brighton, England, and attended Brighton College, as well as Oxford and Cranfield Universities. He was an avid musician, singing in a local church, playing several instruments, conducting and composing; he was also a keen fencer, and enjoyed appearing in local plays. He even appeared as an extra in 'Star Wars' and 'Quadrophenia'! He has an MA in Psychology, an MBA in Business Studies and an MA in Divinity. He has worked for a number of banks, including Midland, HSBC and Deutsche Bank, living in England, Germany and Switzerland before moving to the USA in the early 1990s. His Masonic membership began in England in 1979, and he joined a number of Orders prior to joining St. John's Lodge No. 1 in New York, where he has served twice as its Master. He also served as Grand High Priest (Grand First Principal) of New York State in 2014. He is also a 33o Mason in the Ancient Accepted Scottish Rite (NMD), and First Grand Ancient of the Societas Rosicruciana In Civitatibus Foederatis (SRICF). He has traveled extensively across the USA and in many countries abroad giving lectures on a number of topics, ranging from history to talks on the symbols and esotericism of Masonry. An interest in 18th Century French Masonic Ritual led him to translate a number of important treatises and rituals into English. He is also very involved in a number of Orders outside of Freemasonry, predominantly ones which have an esoteric background, and is also the head of a church descended from the Pre-Nicene Church of Richard, Duc de Palatine. He is the author of "Of Errors & Truth", a translation of Louis-Claude de Saint-Martin's 1775 book, "Renaissance Man and Mason" a collection of Masonic and Esoteric talks, and "Capitular Development Course". Piers is primate of the Apostolic Church of the Golden & Rosy Cross, a descendent of the Pre-Nicene Church of Richard Duc de Palatine and the Order of the Pleroma, a member of several Esoteric Societies; an Esoteric and Masonic lecturer and writer; an avid translator of old French texts; a traveler and a permanent student.