The sulphuretted ore of antimony is the only one which is found in sufficient quantity to be employed in the process of reduction in the large way, and the process it undergoes is extremely simple. The ore, being separated from the greater part of the stony matters which adhere to it, is placed on the bed of a reverberatory furnace, and covered with charcoal powder, and being brought to a low red heat, the sulphuret enters into fusion, and the earthy parts, floating on the surface, are removed with a rake. The melted part is ca3t into the form of large cakes, and is the crude antimony of the shops. The metal is obtained in a state of purity from the crude antimony or sulphuret, by different processes. After its reduction to a pure state, it has been long known by the appellation of regulus of antimony. In the reformed chemical nomenclature, indeed, it is now called simply antimony, but the term regulus still continues to be used by the merchant or the artisan. (See Antimony.) The ores of Cobalt, Nickel, Arsenic, Titanium, and Manganese, are noticed under their metallic heads.