The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ... (1754)
Robertson, J. (John), 1712-1776, Adams, Charles Francis, 1807-1886, former owner. BRL, Adams, John, 1735-1826, former owner. BRL, Boston Public Library) John Adams Library BRL · London : Printed for J. Nourse ... · leaf 71
259- … GEOMETRY. PROBLEM X. Upon a given line ab, to defcribe a fquare. Operation, ift. Draw b c-perpendicular and>equal to ab. (149)- 2d. On a and c, with the radius ab, defcribe arcs cutting in d. f 3d. Draw d c, da ; and the figure ab c dthe fquare required. This depends on art. 191, 194, 185, 121.…
Navigation · Nautical astronomy · Fortification
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-134-307.webp)