ng or sufficient quantities in the reservoir below, it is poured into Fig. 1 shows a new crucible furnace, consisting of a sim- seated. The pressure is steady and equal. If the rubber the reservoir above. ple pot—for holding the crucible—with a lid, and a blow- disk is distended until forced… … from the time the gas is first lighted, without the ———___—» + + passed through the Geissler tube, D, as long as the vacuum slightest trouble or attention. It will melt a crucible Preserve Your Papers. is low enough to admit of it. Mr. Edison says that when a full of silver or gold in twenty-five…
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