Extrait analytique de la tactique navale
Toulon: le 1er November, 1827
Manuscript on paper, 156 x 197mm, pp.  1–90 and blanks at either end; p. 90 is a table on a double-page spread. Written in a calligraphic scribal hand (apart from the dedication which is presumably autograph), ruled borders, numerous diagrams of naval tactics in the text.
Binding: Contemporary green calf, blind roll-tooled and gilt filet borders, owner’s name vertically on upper board within a roll tooled border; marbled endleaves; gilt page edges. Rebacked.
Provenance: Commendant Charles Louis Joseph Bazoche (1784–1853), manuscript dedication dated Toulon 1 November 1827 and ‘Comondent Bazoche’ gilt lettered on upper board.
A pre-publication manuscript copy of a manual of naval tactics with diagrams of naval formations intended for use on shipboard. In his dedication to Commendant Bazoche, Casy points out the value of a pocket treatise compared with large tomes, inconvenient to use on the bridge while at sea. It was written, he says, while serving in South America under rear admiral Claude du Campe de Rosa.
Casy then served under the recipient of this manuscript, Commendant Bazoche, between 1823 and 1826 aboard the Marie-Thérèse, during the Spanish War off Brazil, Chile and Peru. In the year that this manuscript was presented to Bazoche, Casy was appointed chevalier de la Légion d’honneur, and later was a vice admiral and Ministre de la Marine.
The manuscript is written in an accomplished professional hand, apart from the dedication which is presumably in Casy’s own hand. The work was printed in 1828 (Toulon: A. Aurel, 12mo, pp. 106) – I have only been able to locate a single copy, at the BNF.