Nova et recens emendata totius Regni Ungariæ una cum adiacentibus et finitimis regionibus delineatio
Map of Hungary and adjacent parts of the Danube River Valley showing populated places occupied by the invading Turks and places remaining Christian (unoccupied).
Covers the Danube River Valley from Vienna (upstream) to a point just above the entrance of the Caraş River (downstream--present-day Romanian border).
Relief shown pictorially.
Title, notes, and principal place-names in Latin.
Note at lower right: Vera delineatio accurataq[ue] tabula totius Regni Ungarici ... Turcis capta sunt Joannes à Duetechum Jun. fecit, Corn. Nicol. excud.
Large-print note in lower margin: Oppida omnia et propugnacula hoc [map symbol] signo notata a Turcis occupata sunt; Christianorum autem urbes hac [map symbol] nota.
LC copy imperfect: Fold-lined (vertically), mounted on stiff-paper backing.
Includes text, notes, illustration of Hungarian-Turkish cavalry battle, bar scales in German/Hungarian miles, and coats-of-arms.
Available also through the Library of Congress Web site as a raster image.
In the 17th century, maps took a huge leap forward. Mathematical and astronomical knowledge necessary to make accurate measurements had evolved. English mathematicians had perfected triangulation: navigation and surveying by right-angled triangles. Triangulation allowed navigators to set accurate courses and produced accurate land surveys. Seamen learned to correct their compasses for declination and had determined the existence of annual compass variation. Latitude determination was greatly improved with the John Davis quadrant. The measurement of distance sailed at sea was improved by another English invention, the common log. Longitudinal distance between Europe and Québec was determined by solar and lunar eclipses by the Jesuit Bressani in the 1640s and by Jean Deshayes in 1686. With accurate surveys in Europe, the grid of the modern map began to take shape.