Friedrich Wohler (1800-1882), German organic chemist. Isolated aluminium (1827), synthesised urea (1828), discovered beryllium (1828), and obtained acetylene from calcium carbide. From James Sheridan Muspratt "Chemistry" (London, c1860). Engraving. (Photo by: Universal History Archive/UIG via Getty Images)
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Album / Universal Images Group / Universal History Images \ UIG