Witches' Sabbath (The Great He-Goat) powdered glass, orpiment and iron oxides. He likely worked with mixed materials. Technical analysis indicates that most of the Black Paintings begun with preparatory drawings. "Witches' Sabbath" is the exception; the final composition seems to have been painted directly onto the wall. Art historian Fred Licht notes that Goya's brushwork appears "clumsy, ponderous, and rough" and lacking finish compared to his earlier work. Licht believes this was a deliberate ploy to physically convey dismay at human inadequacy and his own feelings of personal doubt. Unique in the series, "Witches' Sabbath" was not significantly altered by Goya after his initial work.
Witches' Sabbath century. The "Canon Episcopi" forwards the Christian doctrine that things of this nature were false delusions and did not occur in reality. "Errores Gazariorum" later evoked the Sabbat, in 1452. Helping to publicize belief in and the threat of the Witches' Sabbath was the extensive preaching of the popular Franciscan reformer, Saint Bernardino of Siena (1380–1444), whose widely circulating sermons contain various references to the sabbath as it was then conceived and hence represent valuable early sources into the history of this phenomenon. Some allusions to meetings of more than one witch and possibly other demons are made in the