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 (The Great He-Goat) and "Judith and Holofernes". "Leocadia", "Two Old Men" and "Two Old Men Eating Soup" were on the left wall. Art historian Lawrence Gowing observed that the lower floor was divided thematically, with a male side – "Saturn" and "A Pilgrimage to San Isidro" – and a female side – "Judith and Holofernes", "Witches' Sabbath" and "Leocadia". The house changed owners a number of times before March 1873, when it came into the possession of the Belgian Frédéric Émile d'Erlanger, who speculated that the area would appreciate in value over the coming years. The murals had deteriorated badly after many years