rge or small , according as more or less copper is melted in the crucible for the purpose of the assay . The mould has a handle , likewise made of iron , by which it is held when the copper is poured in , after which , he plunges it into a tub of water placed near at hand , that the copper may be… … A — Iron mould . B — Its handle . Others stir the molten copper with a stick of linden tree charcoal , and then pour it over a bundle of new clean birch twigs , beneath which is placed a wooden tub of sufficient size and full of water , and in this manner the copper is broken up into little…
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