| Color of Bead. |
|---|
| Substances which produce this color |
|---|
| in the hot bead. | in the cold bead. |
|---|
| Colorless |
| Silica | | Silica |
| Alumina | | Alumina |
| Oxide of Tin | | Oxide of Tin |
| Baryta | | Baryta |
| Strontia | | Strontia |
| Lime | | Lime |
| Magnesia | | Magnesia | With intermittent flame opaque-white. |
| Glucina | | Glucina |
| Yttria | | Yttria |
| Zirconia | | Zirconia |
| Thoria | | Thoria only when saturated |
| Oxide of Lanthanum | | Oxide of Lanthanum |
| Oxide of Cerium | | Oxide of Cerium |
| Tantalic Acid | | Tantalic Acid |
| Oxide of Didymium | | Oxide of Didymium |
| Oxide of Manganese | | Oxide of Manganese |
| Niobic Acid | In small proportions. | Niobic Acid | In small proportions. |
| Pelopic Acid | Pelopic Acid |
| Oxide of Silver | After long continued blowing. Otherwise grey. | Oxide of Silver | After long continued blowing. Otherwise grey. |
| Oxide of Zinc | Oxide of Zinc |
| Oxide of Cadmium | Oxide of Cadmium xx |
| Oxide of Lead | Oxide of Lead |
| Oxide of Bismuth | Oxide of Bismuth |
| Oxide of Antimony | Oxide of Antimony |
| Oxide of Nickel | Oxide of Nickel |
| Telluric Acid | Telluric Acid |
| Yellow to brown. |
| Titanic Acid | | Titanic Acid. |
| Tungstic Acid | | Tungstic Acid |
| Molybdic Acid | | Molybdic Acid |
| | Vanadic Acid | |
| Blue. |
| Oxide of Cobalt. | | Oxide of Cobalt. |
| | Titanic Acid | with intermittent flame opaque-blue. |
| Green. |
| Oxide of Iron | | Oxide of Iron, | bottle-green. |
| Oxide of Uranium | | Oxide of Uranium, | bottle-green. |
| Oxide of Chromium | | Oxide of Chromium, | emerald-green. |
| | Vanadic Acid, emerald-green. |
| Opaque-grey. (The opacity generally becomes distinct during cooling.) |
| |
| Oxide of Silver | After short blowing. Otherwise colorless. | Oxide of Silver. |
| Oxide of Zinc | Oxide of Zinc | After short blowing. Otherwise colorless. |
| Oxide of Cadmium | Oxide of Cadmium |
| Oxide of Lead | Oxide of Lead |
| Oxide of Bismuth | Oxide of Bismuth |
| Oxide of Antimony | Oxide of Antimony |
| Oxide of Nickel | Oxide of Nickel |
| Telluric Acid | Telluric Acid |
| Niobic Acid | After long continued blowing and in considerable proportion. | Niobic Acid | After long continued blowing and in considerable proportion. |
| Pelopic Acid | Pelopic Acid |
| Opaque red and reddish-brown. |
| Oxide of Copper | | Oxide of Copper. |