SHAGREEN n.
oist, and afterward, when dry, scraping off the roughness left between them, and then, by soaking, causing the portions of the skin which had been compressed or indented by the seeds to swell up into relief. It is used for covering small cases and boxes.
WELSBACH a.
yed to heat to incandescence a mantle composed of thoria and ceria. The mantle is made by soaking a "stocking" in a solution of nitrates of thorium and cerium (approx. 99 : 1), drying, and, for use, igniting to burn the thread and convert the nitrates into oxides, which remain as a fragile ash. The light far exceeds th…