Blaesing and Karl Gottfried Hagen, DavidActen zur Blaesingschen Mathematischen Sammlung der Universität (hs. DTitel). (Königsberg, 1820-1824). 11 vols. Fol. Thread-stitched in boards with mount. D label (somewhat creased and soiled). Blaesing and Karl Gottfried Hagen, David Acten zur Blaesingschen Mathematischen Sammlung der Universität (hs. DTitel). (Königsberg, 1820-1824). 11 vols. Fol. Thread-stitched in boards with mont. D label (somewhat creased and soiled). Manuscript inventory and related documents of the scientific Kunst- und Wunderkammer of the mathematician and astronomer David Blaesing (1660-1719), which was left to the University of Königsberg, compiled by Karl Gottfried Hagen in his handwriting. - Blaesing, one of the eight founding members of the Berlin Academy of Sciences founded by Leibniz, bequeathed his library and cabinet of scientific instruments, globes, minerals and natural objects to the University of Königsberg. No printed catalog of the collection exists, and the present manuscript, compiled between 1820 and 1824 and consisting of 4 catalogs, appears to be the only detailed record of its contents. From 3 enclosed letters we learn that the contemporary curator of the collection was Karl Gottfried Hagen (1749-1829), an important pharmacist, close friend of Immanuel Kant and son-in-law of the mathematician and astronomer Friedrich Wilhelm Bessel. This documentation of Blaesing's estate was due to considerable losses the collection had suffered, and Hagen urged the University of Königsberg to relocate the remaining collection and appoint a new curator, the mathematician K.F. Wrede (1766-1826). - The catalogs are Hagen's copies of the estate's inventory of mathematical, optical and physical instruments as well as natural objects. The second and fourth catalogs were originally compiled by the physicist Karl Daniel Reusch (1735-1806) in the years 1769-70. The fourth catalog lists all optical and mathematical instruments that are missing and were probably stolen. - The accompanying correspondence consists of a draft of a letter from Hagen to the university senate, in which he explains the results of his research on the collection, a protocol on the transfer of the remaining pieces to Wrede in 1824 with his personal signature and two official letters from the University of Königsberg to Hagen (with red wax seals), in which he is absolved of any responsibility for the losses and the transfer of the remaining collection under Wrede's direction is ordered. - Some spotting, last few pages with small worm mark, otherwise well preserved. Manuscript inventory and related documents of the scientific cabinet of curiosities and art of the mathematician and astronomer David Blaesing (1660-1719), which was bequeathed to the University of Königsberg, compiled by Karl Gottfried Hagen in his handwriting. - Blaesing, one of the eight founding members of the Berlin Academy of Sciences founded by Leibniz, bequeathed his library and cabinet of scientific instruments, globes, minerals and natural objects to the University of Königsberg. No printed catalog of the collection exists, and the present manuscript, compiled between 1820 and 1824 and consisting of 4 catalogs, appears to be the only detailed record of its contents. From 3 enclosed letters we learn that the contemporary curator of the collection was Karl Gottfried Hagen (1749-1829), an important pharmacist, close friend of Immanuel Kant and son-in-law of the mathematician and astronomer Friedrich Wilhelm Bessel. This documentation of Blaesing's estate was due to considerable losses the collection had suffered, and Hagen urged the University of Königsberg to relocate the remaining collection and appoint a new curator, the mathematician K.F. Wrede (1766-1826). - The catalogues are Hagen's copies of the estate's inventory of mathematical, optical and physical instruments as well as natural objects. The second and fourth catalogs were originally compiled by the physicist Karl Daniel Reusch (1735-1806) in the years 1769-70. The fourth catalogue lists all the optical and mathematical instruments that are missing and were probably stolen. - The accompanying correspondence consists of a draft of a letter from Hagen to the university senate, in which he explains the results of his research on the collection, a protocol on the transfer of the remaining pieces to Wrede in 1824 with his personal signature and two official letters from the University of Königsberg to Hagen (with red wax seals), in which he is absolved of any responsibility for the losses and the transfer of the remaining collection under Wrede's direction is ordered. - Some spotting, last few pages with small worm mark, otherwise well preserved. This We