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Table of Colors of Coatings on Charcoal
| Element | Color Hot | Color Cold |
| Antimony | (Rather volatile) | White |
| Arsenic | (Very volatile) | White |
| Bismuth | Orange-Yellow | Lemon-Yellow |
| Cadmium | Brownish Yellow | Reddish Brown |
| Lead | Lemon-Yellow (volatile) | Lemon-Yellow |
| Silver | Dark Red | Dark Red |
| Tin | Faint Yellow | White |
| Zinc | Yellow | White |