Signatures: a�p4�s (a4) b�p4�s A Ill. engraved by Giuseppe Baroni after Luca Carlevaris; engraved printer's monogram on t.p.; four plates numbered 289-292 or [289]-292 inserted following p. 288. Cancel slips mounted on p. 81, 128, 177, 225 and 231 (not present in all copies); figures 34 and 47-50 have volvelles; numerous ms. corrections throughout (by the printer?). Includes index. Contains celestial cartography in the form of one northern hemisphere, regional constellation representation from the external perspective. The chart, opposite p. 242, is a map showing how to find pole star by referencing the constellations Ursa Major, Ursa Minor, and Casseiopeia.