Porcelain of porcelain, but of porcelain enamel on a metal base, usually of cast iron. Porcelain enamel is a marketing term used in the US, and is not porcelain but vitreous enamel. Porcelain Porcelain () is a ceramic material made by heating materials, generally including kaolin, in a kiln to temperatures between . The toughness, strength, and translucence of porcelain, relative to other types of pottery, arises mainly from vitrification and the formation of the mineral mullite within the body at these high temperatures. Though definitions vary, porcelain can be divided into three main categories: hard-paste, soft-paste and bone china. The
Querelles de famille Querelles de famille Querelles de famille (Family Quarrels) is a novel by Georges Duhamel published in 1932 by Mercure de France, dedicated to Roger Martin du Gard. Georges Duhamel, the narrator, in a caustic and purposefully ultra-conversative tone, criticises the technological progress of the close of the 19th century and the start of the 20th century, and the beginnings of consumer society. Its omnipresent and haunting sounds, in particular that of the phonograph, drive him to promote the creation of a national park of silence. The "grime" which, according to him, surrounds the cities, due essentially to what he calls