Extremely influential French chemist (1743–1794) noted for his discovery of the role oxygen plays in combustion. Rare manuscript DS in French, signed “Lavoisier,” one page both sides, 9.5 x 13.25, July 11, 1781. Untranslated contract with architect Nicholas Samson Lenoir, including a detailed list of payments to be made and mutual obligations. In very good condition, with central horizontal fold with small edge separations, toning to edges, and scattered small tears and chipping to one edge. Pre-certified PSA/DNA.
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