It was active from about 1844 to 1849. Some of the most important literary and intellectual people in Paris were members. They including Dr. Jacques-Joseph Moreau, Théophile Gautier, Charles Baudelaire, Victor Hugo, Honoré de Balzac Gérard de Nerval, Eugène Delacroix and Alexandre Dumas, père. Monthly "séances" were held at the Hôtel de Lauzun (at that time: Hôtel Pimodan) on the Île Saint-Louis.