First introduced in Roman times and reintroduced at the end of the nineteenth century by the Muranese glass industry, this process is based on joining sections of glass rods called murrine. The glass sections are obtained by cutting multicolored rods of glass. These rods were often produced in advance to specification, sometimes by different glass workshops, to create a floral or geometric design. The murrine are laid down in the desired pattern, fused together into a single glass mass and then blown and shaped by the glassblower. In some cases, as with Carlo Scarpa in the 1940s, molds are used and the glass is shaped without blowing. Carlo Scarpa also used two distinctive finishing processes: battuto and velato. These were obtained by carving the entire surface at the wheel in the moleria.