A hand written manuscript, ‘A System of Practical Gunnery’, signed and dated by William Purves, 1821. Exceptionally well executed with a fine hand, 60 pages (6 blank) measuring 15″ x 9.5″ (38 x 24 cm) with thick card marble backing, the text including ‘Gunnery in the art of Charging, directing & exploding fire arms such as cannon, mortars & c., the Definitions, Paths of Projectiles, by Trigonometry, Geometrically and Gunnery projections. Including various potential problems, their cause and solution
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