Reheating-furnace
These furnaces, although used for various purposes, are all of the reverberatory type, similar to a puddling-furnace. They are used for heating wrought-iron piles, blooms, billets, etc., and the ingots, slabs, blooms, etc., of steel, to the temperature suitable for hammering or rolling. They are sometimes called balling-furnaces. See REVERBERATORY FURNACE. Relievo, or Rilievo, is a term applied to works in sculpture and the fine arts where figures are made to project from the ground or body on which they are formed and to which they remain attached. It is Basso-rilievo when the figures project only slightly from the ground, Mezzo-rilievo when they stand out half their natural proportions, and Alto-rilievo, or high relief, when the figures are so prominent from the ground that merely a small part of them remains attached. See INTAGLIO.