This article needs cleanup. Please edit this article to conform to a higher standard of article quality.
The Ars Theurgia Goetia (The theurgia [a type of ritual to invoke ghosts or spirits] to Practise the Goetia), second part of The Lesser Key of Solomon, explains the names, characteristics and seals of the 31 aerial spirits (called chiefs, emperors, kings and princes) that King Solomon invoked and confined, the protections against them, the names of their servant spirits, called dukes, the conjurations to invoke them, and their nature, that is both good and evil.
Their sole objective is to discover and show hidden things, the secrets of any person, and obtain, carry and do anything asked to them meanwhile they are contained in any of the four elements (Earth, Fire, Air and Water) These spirits are given in a complex order in the book, and some of them have spelling variations according to the different editions.
The Goetia: The Lesser Key of Solomon the King (Clavicula Salomonis Regis) is a translation of the text by Samuel Mathers and Aleister Crowley.
The ArsTheurgiaGoetia ("the art of goetic theurgy") is the second section of The Lesser Key of Solomon.
The Ars Almadel also tells about the angels that are to be invoked, and explains that only reasonable and just things that are needed must be asked to them, and how the conjuration has to be made.
Goetia refers to a practice which includes the Invocation or Evocation of demons, and largely derives from the 17th century grimoire Lemegeton Clavicula Salomonis, or The Lesser Key of Solomon.
The ArsGoetia refers to the first section of King Solomon's grimoire, and contains descriptions of the seventy-two demons that Solomon is said to have evoked and confined in a bronze vessel sealed by magic symbols, and that he obliged to work for him.
A revised English edition of the ArsGoetia was published in 1904 by magician Aleister Crowley, and it serves as a key component of his popular and highly influential system of magick.