KLUEGEL, Georg Simon.

Commentatio de Perturbationibus Corporum Coelestium facilius et concinnius evolvendis. Pars Prima [-Pars Secunda].

One engraved plate. 38 pp.; 60 pp. 4to, modern boards. [Göttingen: Commentationes Societatis RegiaeScientiarum Gottingensis, Vol. XII, 1793-94]. First separate edition and very rare. Klügel (1739-1812), studied with A.G. Kästner at Göttingen; he became professor of mathematics at Helmstedt in 1767 and later transferred to the chair of mathematics and physics at the University of Halle. Klügel made notable contributions to trigonometry (see D.S.B.) and wrote on physics, astronomy, and optics. Fine copy with the stamp of Franz Xaver von Zach (1754-1832), the astronomer (see D.S.B.) who formed a large and distinguished scientific library. D.S.B., VII, pp. 404-05. Lalande, p. 635. Poggendorff, I, 1277-78.

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