History of Inventions USNM 49 Glass and Enamel, 1922

Above: history of glass no. 1. Volcanic glass — obsidian. Natural product. No. 2. Furnace slag — glass. Accidental product of such as may have suggested use of glass. No. 3. Glass ornament; head of hairpin; bronze age. Europe 101,341 no. 4. Ancient roman glass; toilet bottle 101,906 no. 5. Ancient roman glass; toilet bottle 95,840 no. 6. Modern glass; american; tiffany 96, 446 no. 7. Modern glass; american; tiffany 96,438 no. 8. Modern glass; american; tiffany. Below: history of enamel no. 1. Vase; porcelain with lacquer — cloisonne decoration. No. 2. Vase; enamel on metal. China. No. 3. Five successive stages in the cloisonne process. Japan. Date: 1922.