\ BooknewsBased on a lecture course for graduate and advanced undergraduate students of glass technology and materials science at the U. of Sheffield (England). Explains the formation, characteristics, transformations, and chemical manipulations of various materials in the glassy state, which shares qualities with both liquids and solids. The second edition (first, 1982) includes new chapters, by other authors, on the sol-gel formation process and batch melting reactions; a section on the strength of glasses has also been added. A long chapter discusses color in glasses. Annotation c. Book News, Inc., Portland, OR (booknews.com)\ \