Science & Technology / Astronomy & Mathematics

WELPER, Eberhard the elder. Gnomonica, oder gründlicher Unterricht und Beschreibung, Wie man allerhand Sonnen-Uhren auf ebenen Orten künstlich aufreissen und leichlich verfertigen soll &c. Zum andermal aufgeleget und mit nutzlichen Anmerkungen, wie auch dem andern Theil, vermehret, durch einen Liebhaber der Mathematischen Wissenschaften [= Johann Christoph Sturm].
Nuremberg, Paulus Fürstens, printed by Christoph Gerhard, 1672. 2 volumes bound as 1. 4to. With a finely engraved frontispiece (an architectural gate with a wide variety of sundials and other astronomical instruments), 16 engraved plates (1 folding) in the first part (that for p. 48 repeated - at the end of vol. 2 - in accordance with the instructions to the binder), and numerous mathematical illustrations and figures on 13 folding engraved plates lettered A-N in the second part. Contemporary parchment. [12], 88; 74, [2] pp. Full description

YPEY, Nicolaas. Grondbeginzelen der kegelsneeden, bevattende de eerste en voornaamste eigenschappen van de parabola, ellips en hyperbola. Ten dienste der leerlingen opgesteld.
Amsterdam, Yntema and Tieboel, 1769. 8vo. With 7 engraved folding plates, head- and tailpieces built up from cast typographic ornaments. Contemporary half calf, sprinkled-paper sides. XXVIII, 68 pp. Full description

[ZACUTO, Abraham Ben Samuel]. Ephemerides sive Almanach perpetuu[m].
(Colophon:) Venice, Petrus Liechtenstein, for Johannes Lucilius Santritter, October 1498. 4to. With a woodcut title page and numerous tables. 20th-century limp vellum, sewn on 2 thin vellum straps laced through the joints, with the manuscript name of the (wrong) author and year of publication on the spine. [122] ll. Full description