This is mixed with small coal, and when redistilled gives an enriched dust, and by repeating the process and distilling from cast iron retorts the metal is obtained. [Please select]
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Only redistilled mercury should be used, and the tube should be perfectly clean before filling. [Please select]
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This, however, is less with redistilled bisulphide than with the ordinary quality, and with suitable apparatus is not insuperable. [Please select]
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The distillate is then saturated with fused chloride of calcium, and redistilled. [Please select]
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