As for the character which becomes the "Calotte Tank". The calotte, or the dome of the furnace was made of baked earth. After the war "La Calotte" became the organ of La Libre Pensee. The "calotte" is cylindrical, made from velvet and astrakhan (pelt of newborn lamb. In September 1906, "La Calotte", a new anti-clerical newspaper, came out of the press. The calotte originates from the skullcap worn by the Zouave papal regiment around 1860. The calotte is cylindrical, made from velvet and astrakhan (pelt of newborn lamb).