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Subject Copper Remove constraint Subject: Copper

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    • 1909

    Figure illustrates crystals from a fused alloy of copper and tin under magnification.

    This plate is found within The Romance of Modern Chemistry, which is a layman's introduction to topics in chemistry. Includes a…

    • after 1849 – before 1887

    Tabulation of data on the fineness of copper (i.e. weight of copper in proportion to the total weight of the metal including impurities and alloy base metals.)