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Britannica 11th
Encyclopaedia Britannica · 11th edition
Verdigris
Britannica 11thVERDIGRIS, a pigment, consisting of basic copper carbonates, made by acting upon copper plates with pyroligneous acid soaked up in cloths, exposing the plates to air, then dipping in water, and finally scraping off the greenish crust; the plate is re-exposed a ...
Vol. 27, pp. 1018-1018
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