TINUED. With Bx on Platinum Wire. OF1: Dissolves readily, and in large quantity, to a limpid glass, which appears yellowish while hot; on cooling it is colorless. When much of the oxide is present, the glass may be made enamel-white by flaming; and on a still larger addition it becomes enamel-white on cooling. RFI: The saturated glass becomes at first gray and cloudy, and finally transparent again. On Ch the oxide becomes reduced, the metal vaporizes and coats the Ch with oxide. With SPh on Platinum Wire. As with Borax. Нот AND COLD. HOT. Нот. COLD. Нот. TABLE III.-THE METALLIC OXIDES ARRANGED Sesquioxide of Chromium, when fully saturated; when cold, yellowish-green. Vanadic Acid; when cold, pale-green. c.-Red to Brown Beads. { Sesquioxide of Cerium; on cooling yellow, enamel-like by flaming. Sesquioxide of Iron; on cooling, yellow. Sesquioxide of Uranium; on cooling yellow, enamel-yellow by flaming. Sesquioxide of Chromium; on cooling yellowish-green. Sesquioxide of Iron, containing Manganese; on cooling yellowish-red. Oxide of Nickel (reddish-brown to brown); violet while hot. d.-Violet Beads (amethyst-colored). { Oxide of Nickel; on cooling, reddish-brown to brown. Oxide of Nickel, containing Cobalt; on cooling, brownish. WITH REFERENCE TO THE COLORS WHICH Нот AND COLD. WITH BORAX IN REDUCTION FLAME PRODUCE: a.-Colorless Beads. Silica, Alumina, Binoxide of Tin. Baryta, Strontia, Lime, Magnesia, Glucina, Yttria, Zirconia, Thoria, Oxides of Lanthanium and Cerium, Tantalic Acid. when highly saturated cloudy by flaming. Sesquioxide of Manganese; sometimes, on cooling, pale rose colored. Niobic Acid; when feebly saturated. } with with strong blowing; feeble blowing gray. Oxide of Copper; when highly saturated on cooling opaque HOT. {and red. Нот. b.-Yellow to Brown Beads. Titanic Acid (yellow to brown); when highly saturated enamelblue by flaming. Tungstic Acid (yellow to dark-yellow); when cold brownish. Vanadic Acid (brownish); green when cold. c.-Blue Beads. HOT. Oxide of Cobalt; retains its color on cooling. HOT AND COLD. HOT. d.-Green Beads. Sesquioxide of Iron (yellowish-green); especially when cold. Sesquioxide of Uranium (yellowish-green); when highly saturated black by flaming. Sesquioxide of Chromium (light to dark emerald-green). TABLE III.-CON WITH BORAX IN OXYDATION FLAME PRODUCE: e.-Blue Beads. HOT. Oxide of Cobalt; retains its color on cooling. Oxide of Copper (when highly saturated greenish-blue); green COLD. {while hot. Нот. COLD. f.-Green Beads. Oxide of Copper; when cold blue or greenish-blue. on cooling the color changes, according to proportion in the which the various oxides are present, to light-green, blue, or yellow. Sesquioxide of Chromium, yellowish-green; yellow to red while hot. Vanadic Acid, greenish; yellow while hot. TINUED. COLD. WITH BORAX IN REDUCTION FLAME PRODUCE: Oxides of Silver, Zinc, Cadmium,) with feeble blowing; Niobic Acid; when highly saturated. colorless. f.-Red and Opaque Beads. COLD. { Oxide of Copper, when highly saturated; colorless while hot. |