FORTES, Manuel de Azevedo.- O engenheiro portuguez: divido em dous tratados. [...] Obra moderna, e de grande utilidade para os engenheiros, e mais officiaes militares.- Lisboa Occidental: Na Officina de Manoel Fernandes da Costa, 1728-1729.- 2 vols.: 1 retrato, 1 portada grav., [1], 11, 22 gravuras; 20 cm.- E The most important treaty on fortification published by a Portuguese, considered masterful and as complete as the best that had been published in Europe to date. Manuel de Azevedo Fortes (1660-1749), military engineer and chief engineer of the Kingdom (1729), was a member of the Royal Academy of History and author of a treatise on rational, geometric and analytical logic, printed in Lisbon in 1744. The collation of the two volumes is as follows: I - [63, 1 br.], 537, [1 br.] p.: 1 portrait, [1], 11 unfolded engravings; II - [16], 492 p.: 1 engraved title, 22 unfolded engravings. The unnumbered engraving placed between pages. 24 and 25 of the first volume, represents a «Taboada dos reductadores». Copy slightly cropped, with slight marginal stains on the first five leaves of volume I; portrait slightly cropped to the head; occasional marginal and minor wormholes in some engravings. Remarkable contemporary bindings, fully “vieux rouge” shagreen, very fresh, profusely worked in gold on identical covers (in loose tooling), with central polygonal ornamental borders and reserves; panels gold closed on the spines, with allusive tool (castle) between the sections; it retains the marbled paper endpapers (from the 19th century?), added with a pair of modern laid paper endpapers. Provenance: Library of Aníbal Fernandes Thomaz (ex-libris in both volumes), lot nº 410, from the catalogue of his “Preciosa Livraria” (Lisbon, 1912). Inocêncio, V, p. 370.