Author: BILLINGSLEY (Case)

Description

tTh?) \‘V% ‘‘•‘ ,fr1 BILLINGSLEY (Case). 0 The Longitude at sea, not to be Lound by firing guns, nor by the most curious spring— clocks or watches. But the only true method for discovering that valuable secret by the sun, moon or stars, and an exact timekeeper, with such necessary iiprovements as have not yet been describ’d by any other person, and Cwith respect to the term of any ordinary voyage> may properly be call’d a perpetual motion. Now humbly projzosed, to the consideration of the publick, by C. Billingsley. pp. 28. EDe M.j 80. Printe R. Mount and Company, and J. torphew: London, 1714

Card ID: 136