The Clayworker's Hand-book: A Manual for All Engaged in the Manufacture of Articles from Clay

acid allowed alumina amount baryta belt blunger boiler bricks burning carbon carbon dioxide cause cent chimney china clay clay clayworks coal colour combustion composition compounds containing cooling crack cubic cylinder defect diameter draught dryer drying employed engine engobe feet felspar fireclay firing flue-gases flues flux frit fuel gases glaze grammes grinding heat hydrochloric acid impurities inches increase iron kaolin kiln less lime lubricant machine machinery material matter means melting point metal method mixed mixture moisture mould mouthpiece necessary obtained ordinary oxide pipes placed plastic porosity pressure prevent produced proportion pug mill pulley pump pyrites pyrometer quantity refractory removed result revolutions per minute rope saggers salts sample sand satisfactory scum shaft sieve silica slip sodium carbonate soluble specific gravity steam sufficient suitable sulphate sulphur surface temperature thermoscopes tube usually vitrified volume ware waste weight whilst