I had to return this book because it is so poorly done. Many of the example glaze tiles didn't even tell whether they were fired in oxidation or reduction. It was so frustrating to see a glaze I wanted to use, but have no idea how to make it . Poorly organized. Nice color pictures, though.
The thing I love about this book is the visual examples of the results you should expect from your the glaze formulas & varying oxides. The results I have achieved frequently do not demonstrate the same results. That is not unexpected...but this book does not give any suggestions or recommendations for troubleshooting significant differences in results. It also does not allow for differences in clay bodies...expansion rates, etc. I've found the book to be a good general guide as to the impact of colorant combinations, but not much more in practice.