Hoffmann, Ferdinand. The construction of chain bridges, based on the laws of equilibrium of the forces interacting with it, and works for the practical need without the help of differential and integral calculation. 2 Bll., VIII, 111 pp., 1 Bl. With 7 plates (1 folded). 25 x 15.5 cm. Semi-leather d. C. (stronger toast, joints bursted). Vienna, C. Gerold, 1850. 9 pp. 402 and 1335 (on Hoffmann). Malberg 135. André 46. – Only issue. Ferdinand Hoffmann (1805-1882) had already met Navier's "Rapport et Mémoires sur les ponts suspendus" in 1825 and then decided that "that theory, if not according to its whole scope, should nevertheless be mathematically justified in its most essential parts without the help of the differential and integral calculations, and by their publication in the German language and without Connection of extensive, the costs of the circulation so very increasing detail drawings already existing bridges" to make known further circles. However, his work as an engineer of the Austrian railways prevented him from implementing this project earlier than 1850. A German translation of Navier's work was published in 1829 in Lviv. – A little patchy, plates partly folded at the edges. Folding panel in the folds. Frequently stamped Bible copies.