Modern curiosities of art & nature extracted out of the cabinets of the most eminent personages of the French court : together with the choicest secrets in mechanicks, communicated by the most approved artists of France
Lémery, Nicolas, 1645-1715.
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Aqua fortis for etching.
Take Verdigreece an ounce, green Cop∣peras an ounce, Salt an handful; these being put into strong Vinegar, set them in a pot of boyling Water for half an hour, or more.
