The Grimoire of Armadel is a do-it-yourself book of ceremonial magic. This edition was translated by Mathers from a seventeenth-century manuscript kept at the Bibliotheque d'Arsenal in Paris. The Grimoire contains detailed descriptions of the natures and offices of the various evil spirits. The sigils -- seals giving power over demons -- related to the various spirits are reproduced together with their practical uses, according to the particular aspect of the astral world that the reader wants to investigate. With more than forty spells, plus detailed diagrams and conjuring charts -- all reproduced here following the method of the original French manuscript.