| Yttria } proportions. | Yttria |
| Zirconia | | Zirconia |
| Thoria | | Thoria |With
| Oxide of Lanthanum | | Oxide of Lanthanum |intermittent
| | | " " Silver }flame
| Tantalic Acid | | Tantalic Acid |opaque
| Niobic " | | Niobic " |white.
| Pelopic " / | Pelopic " |
| Titanic " _/ | Titanic " |
| _ | |
| Tungstic " \ In small | Tungstic " |
| Molybdic " \ quantity | Molybdic " |
| Oxide of Zinc | only. | Oxide of Zinc /
| " " Cadmium } | " " Cadmium_/
| " " Lead | In large | " " Lead
| " " Bismuth / quantity | " " Bismuth
| " " Antimony / yellow. | " " Antimony
--+-----------+--------------------------+--------------------------------
Yellow, orange-red and reddish-brown.
--+-----------+--------------------------+--------------------------------
| _ |
| Titanic Acid, yellow \ |
| Tungstic Acid, yellow \ |
| Molybdic Acid, dark yellow|when in |
| Oxide of Zinc, pale-yellow|large |
| Oxide of Cadmium, }quantity. |
| pale-yellow |Otherwise |
| Oxide of Lead, yellow |colorless.|
| Oxide of Bismuth, orange / |
| Oxide of Antimony, yellow/ |