This revised, expanded and updated 4th edition of The Potters Dictionary is an indispensable reference book for all makers in ceramics - professionals and beginners, students and teachers. It explains sources and characters of materials, behaviour of clays and glaze minerals during firing processes, forming methods and glaze construction, together with with explanations of terminology and historical developments. The Dictionary is set out as an index of key words and phrases, thus giving quick access to information. Each heading has a simple definition and short explanation, followed by a detailed article with explanations of detailed points and easy-to-follow diagrams, drawings and colour photos. In this edition new articles cover Soda firing, Paper clay, Fuming Printing, Computer glaze calculations, and Crystalline glazes. A revised Potter's periodic table is presented and correct chemical terminology is used. Developments in kiln construction are described as are details of precauti