Good dark image which would look great framed. This sheet is approx. 10.25 x 6.5 inches (26 x 17 cm ), in good condition with a blank back . The portrait area itself is approx. 5.25 x 4.5 inches (13 x 11 cm ). This print was published in an 1833 edition of "The Gallery of Portraits". London, Charles Knight.

Joseph-Louis Lagrange, born Giuseppe Lodovico Lagrangia (January 25, 1736 – April 10, 1813) was an Italian mathematician and astronomer, who lived most of his life in Prussia and France, making outstanding contributions to all fields of analysis, to number theory, and to classical and celestial mechanics. On the recommendation of Euler and D'Alembert, in 1766 Lagrange succeeded Euler as the director of mathematics at the Prussian Academy of Sciences in Berlin, where he stayed for over twenty years, producing a large body of work and winning several prizes of the French Academy of Sciences. Lagrange's treatise on analytical mechanics (Mécanique Analytique, 4. ed., 2 vols. Paris: Gauthier-Villars et fils, 1888-89), written in Berlin and first published in 1788, offered the most comprehensive treatment of classical mechanics since Newton and formed a basis for the development of mathematical physics in the nineteenth century.

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