CASTELLI, E PONTI CON ALCUNE INGEGNOSE PRATICHE, E CON LA DESCRIZIONE DEL TRASPORTO DELL’ OBELISCO VATICANO E DI ALTRI DI D. FONTANA. [bound with] CONTIGNATIONES AC PONTES NICOLAI ZABAGLIA

520 x 370 mm. (20 1/2 x 14 1/2"). 4 p.l., XXIX, [1], 46; [4], 48 pp. Two volumes bound in one. Edited and with notes on the life and work of Zabaglia by Filippo Maria Renazzi. SPLENDID CONTEMPORARY RED MOROCCO, VERY ATTRACTIVELY GILT, covers with frames formed by thick and thin gilt rules filled with alternating fleuron tools above an undulating ribbon roll, central panel framed by multiple gilt rules connecting ornate floral corner- and sidepieces, flat spine divided into panels by multiple plain and decorative rules, these panels with rectangular centerpiece composed of volutes, arabesques, and floral tools, marbled endpapers. Engraved portrait of Zabaglia by Girolamo Rossi after a drawing by Pietro Leone Ghezzi, engraved vignettes on both title-pages, and 62 FINE ENGRAVED PLATES, 10 OF THEM FOLDING, after designs by Francesco Rostagni. Berlin Katalog 2755; Brunet V, 1515 ; Graesse VII, 501; Cicognara 968 (all citing the first edition). ◆Trivial signs of use to the binding and contents with insignificant imperfections only: AN EXCEPTIONALLY FINE COPY, the attractive binding lustrous and virtually unworn, and THE PLATES REMARKABLY CLEAN, FRESH, AND BRIGHT, with especially ample margins. This is a remarkably beautiful copy, inside and out, of the second, enlarged edition of a fundamental work for the history of engineering and the construction of buildings, expanding the original 1743 edition for educational use, with text in academically appropriate Latin in addition to the original Italian. Niccola [or Nicolò] Zabaglia (1667-1750) began working as a day laborer on the construction of St. Peter's Basilica in 1686, and was employed full time on the project by 1691. According to Dizionario Biografico degli Italiani, "by 1696, he was able to demonstrate his ability as a mechanic, moving the large porphyry cup and the bronze statues placed in the Vatican baptistery." Although illiterate, he was an ingenious practical engineer. DBI notes that "the preparation of scaffolding and exceptional castles, and the transport of extraordinary weights" were his strongest skills. For the Vatican, he organized the removal, transportation, and installation of several obelisks at St. Peter's and other churches, figured out a way to move a large marble altar, and prepared the scaffolding needed to construct, maintain, or restore areas of St. Peter's. He was involved in strengthening its famed dome after the earthquakes of 1703 and 1730, inventing the necessary machines to do the work and training the construction crew. This volume's splendid oversized engravings illustrate the machinery and instruments used for the restoration of the domeâ€"elaborate hoisting devices, construction tools, pulleys, scaffolding, ornamental tiles, etc.â€"as well as the craftsmen at work. The transportation of the Vatican obelisk by Domenico Fontana in 1590 is represented by a fine selection of plates from Carlo Fontana's work on St. Peter's ("Templum Vaticanum," published in 1694 and derived from Domenico's original "Delle transportazione dell'obelisco Vaticano"). This undertaking may be compared with the plates depicting Zabaglia's methods for transporting and erecting obelisks. The greatest honor conferred on the unofficial "Engineer of the Vatican" in his lifetime was the first edition of this work, published at Rome by Niccolò & Marco Pagliarini in 1743, with a total of 55 plates. The present second edition is enlarged with a biography of Zabaglia written by jurist Filippo Maria Renazzi (1742-1808) and with eight more plates, which are among the very best and largest in the book; it is less commonly encountered than the first edition. This may be due to the fact that, if put to the intended use in educational settings, copies of the 1824 edition would have seen far more wear and tear than the earlier printing. Second Edition with the Addition of Later Machines and Premises.