Any real education in ceramics must involve, from the outset, an appreciation of the source materials--the rocks around us. While good, throwable clay may be a regional commodity, there is no part of the world that will not yield potential glaze materials in abundance. Potters therefore need to know how to exploit the special properties of local rocks quickly, reliably, and methodically. This new revised and updated version of Brian Sutherland's classic book on making glazes from natural sources explains how to locate glaze material and construct, test, and use the glazes created. "Glazes from Natural Sources" discusses rock types and other likely sources of supply, the making of test pieces, and the use of blend systems and constructions. The author also clarifies the Seger system of glaze presentation for those who, like himself, have found it difficult to grasp and apply. He covers, and supplies, formulae for glazes for all temperatures--from raku to stoneware and porcelain--and includes sample recipes. The book emphasizes careful planning and control to ensure results that are repeatable. This makes the science behind making glazes from natural sources both understandable and feasible. "Glazes from Natural Sources" is fully illustrated, with diagrams of techniques demonstrated as well as images of the finished works of potters to show the results of these natural glazes. First published in 1987, this book is considered a classic by ceramicists. This edition includes a new chapter by glaze expert Nigel Wood.