'Cuprum arseniatum' Product:Fine art poster Napoleon III left the Regency

Napoleon III left the Regency of France in the hands of the Empress Eugenie and left Paris to join the Italian army

John Barry

stamped: 'FROM MR

with figures watching below

'Cuprum arseniatum' Product:Fine art poster Napoleon III left the RegencySpecimen of Liroconite [?] here termed 'arseniate of copper' with figures showing the crystalline form. Plate 37 from British mineralogy: or coloured figures intended to elucidate the mineralogy of Great Britain, by James Sowerby, volume 1 (London, R. Taylor & Co., 1804). The accompanying text states that 'This beautiful variety is described by Count Bournon in the Philosophical Transactions for 1801' [Jacques Louis, Comte de Bournon FRS (1751 1825)].