Information
Folio, 3 parts in one volume, first part: 44 cc. nn., including the frontispiece with a large allegorical engraving, designed by the author, with 36 engravings (two of which are double-page: Topographic map of the Tuscan Maremma and Bird's eye view of Ancona). Second part: 12 cc. no. with 11 engravings, one of which is a double page: Plan of the Maccarese pond. Third part: 35 cc. no. with 21 engravings, one full page: Trajan's Column and three double page engravings: Plan of the Pontine Marshes, Piazza del Popolo and Piazza S. Pietro. Some cards with light browning. Full parchment binding, gusset, title and gold friezes on the spine. Exemplary in perfect condition and complete in all its parts.
Specialist Notes
The engravings are the work of Meyer himself, of B. di Ballin, Io. Collin, G.B. Falda and by a twenty-year-old Gaspar van Wittel (author, among others, of the views of Piazza del Popolo and Piazza S. Pietro). The index contains a paper entitled: "On the appearance of the last comet", never printed. The fifteen pages follow for: "Sac. Congreg. Riparum Tiberis".
The work includes a beautiful series of engravings by the hydraulic engineer and inventor of Dutch origin who successfully completed the restructuring of the Tiber when he found himself in address enormous problems caused by natural and anthropogenic factors such as overflow, erosion, waste and the abundance of weirs and dams. The first part describes and illustrates the various solutions adopted by Meyer, including the construction of canal walls, the deepening of the river, dredging, the construction of bridges, locks and other devices for towing boats on slopes. The volume also includes a view of Rome under water, a map of the surroundings of Pisa, a plan of Ancona and an illustration of a first "horseless carriage", while Part II, which deals with the stretch from Rome to the sea and thus the problems caused by larger ships, includes illustrations of devices for raising sunken ships, the dredging of a harbor, and different lock systems. Part III concerns the draining of the Pontine Marshes, with a double-page map of Falda, and describes various hydrostatic machines, together with proposals for the erection of Trajan's Column and additions to St. Peter's and other squares, including, almost incidentally, a beautiful series of views of Piazza del Popolo and Rome at the end of the eighteenth century. Onorati's defense of Meyer's radical proposals (much criticized by competitors such as Fontana) includes a detailed list of expenses justifying the project.