Rapport und Journal einer Minir Übung auf Amack A[nn]o 1780. Heinrich Otto von SCHEEL.

Rapport und Journal einer Minir Übung auf Amack A[nn]o 1780.

Copenhagen, H.O. von Scheel 10 October 1780.

Large 4to (360 x 254 mm.). [ii], [37], [1 blank]p. and FIVE INK AND WATERCOLOR PLATES WITH FOUR FOLDING FLAPS. In a single cursive hand (Kurrentschrift), signed by the author and by Prof. H.J. Krebs (fl. 1774-1802).

Contemporary half-calf and sprinkled paper over boards, gilt-lettered K.M.K. on the spine.

UNPUBLISHED AUTOGRAPH ACCOUNT OF THE ARTILLERY SPECIALIST’S SEVENTEEN-DAY CIVIL AND MILITARY ENGINEERING EXPERIMENT in August and September 1780, carried out as part of the new defensive road network around Copenhagen. Adjutant General Scheel supervised the creation of a firm roadbed through a swamp by excavating a shaft and gallery then collapsing them with a massive subterranean explosion. He documented every aspect of the project, including every tool and mechanical device used. FOUR FOLDING FLAPS RECORD CONDITIONS AND STAGES OF THE EXPERIMENT ABOVE AND BELOW GROUND (two each on plates III and V). Scheel presented his conclusions, based on formulae and technical data from respected secondary sources, and closed the dossier with a nine-point summary, dated 10 October 1780.
            The front flyleaf bears the inscription of August Baggesen (1795-1865; Chief of Staff of the General Command of Zealand, home to Copenhagen), who purchased this manuscript at the auction of “Aubert”, likely Benoni Aubert (1768-1832; Chief Engineer at three important Danish fortresses — his father, Major General F.J.X. Aubert (1727-93), assisted Scheel with the experiment). Baggesen gave the quarto to the Königliche Militärische Hochschule (Officer-Skolen stamp). In fine condition.
¶See Jähns’ Geschichte der Kriegswissenschaften III: 2374 and Bruun’s Bibliotheca danica II: 335 & III: 277 and Bricka’s Dansk biografisk lexikon XV: 90-92.

Item #11100

Price: $11,500.00