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009634

Refining of silver, showing (2) a test put into the furnace and (3) burning the silver in a test. A test warming (8) and a roaster for making burnt silver dry (9). From 1683 English edition of Lazarus Ercker 'Beschreibung allerfurnemisten mineralischen Ertzt- und Berckwercksarten' originally published in Prague in 1574. Copperplate engraving.

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009634.jpg
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Irish Photo Archive
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2112x3258 / 1.1MB
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Refining of silver, showing (2) a test put into the furnace and (3) burning the silver in a test. A test warming (8) and a roaster for making burnt silver dry (9). From 1683 English edition of Lazarus Ercker 'Beschreibung allerfurnemisten mineralischen Ertzt- und Berckwercksarten' originally published in Prague in 1574. Copperplate engraving.