Soft-paste porcelain its soft-paste and hard-paste varieties is fraught with misconceptions", and various categories based on the analysis of the ingredients have been proposed instead. Some writers have proposed a "catch-all" category of "hybrid" porcelain, to include bone china and various "variant" bodies made at various times. At least in the past, some sources dealing with modern industrial chemistry and pottery production have made a completely different distinction between "hard porcelain" and "soft porcelain", by which all forms of pottery porcelain, including East Asian wares, are "soft porcelain". Chinese porcelain, which arrived in Europe before the 14th century, was much admired and
Porcelain Building in Houston, Texas, which when constructed in 1929 had a porcelain logo on its exterior. A more detailed description of the history, manufacture and properties of porcelain tiles is given in the article “Porcelain Tile: The Revolution Is Only Beginning.” Because of its durability, inability to rust and impermeability, glazed porcelain has been in use for personal hygiene since at least the third quarter of the 17th century. During this period, porcelain chamber pots were commonly found in higher-class European households, and the term "bourdaloue" was used as the name for the pot. However bath tubs are not made