Lot: 20
Benjamin Robins New Principles of Gunnery: containing The Determination of the Force of Gun-Powder , and An Investigation of the Difference in the Resisting Power of the Air to Swift and Slow Motions. J. Nourse, London, 1742, 1st Edition; octavo, disbound, remains of leather backstrip; lvii,95pp. Folding Plate. Rear endpaper heavily creased o/w fine.