Diderot & d’Alembert (1768) ‘Mineralogy, 7th collection. Veins and Works in Mines, plate 1 (p.156) from Encylopedie, v23. Copperplate engraving

Diderot & d’Alembert (1768) ‘Mineralogy, 7th collection. Veins and Works in Mines, plate 1 (p.156) from Encylopedie, v23. Copperplate engraving

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Diderot & d’Alembert (1768) ‘Mineralogy, 7th collection. Veins and Works in Mines, plate 1 (p.156) from Encylopedie, v23. Copperplate engraving (41.5 x 30cm), with clear plate mark (36 x 23cm) showing, fig 1, tracing the metal viens and fig 2 exploiting the veins. Shows surveyors using a divining rod and, also, following evidence in the landscape over a schematic section of veins through rock, then in part two the tunnels and inclines of a mine. Slightly age toned but clean and in very good condition. In French.