Pigments: a mill for grinding colours, and an indigo grinding mill. Engraving by H. Mutlow.

    Date:
    1824
    Reference:
    45420i

    Licence: Public Domain Mark

    Credit: Pigments: a mill for grinding colours, and an indigo grinding mill. Engraving by H. Mutlow. Wellcome Collection. Source: Wellcome Collection.

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