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 156
the tangent of half its diftance frorthe pole P. 456. The fecond cafe is fooneft performed thus. From the points a, b, (found as above), with the tangent of then Hdiftance, from p the pole of the right circle, defcribe arcs cutting in f.Pwhich is the centre of a fmall circle parallel to the right…
Navigation · Nautical astronomy · Fortification
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
