[LONGITUDE]. [CHARNIÈRES, Charles François Phillippe de]. Mémoire sur l'observation des longitudes en mer. Paris: L'Imprimerie Royale, 1767. 8o. 3 folding plates. Contemporary marbled wrappers. FIRST EDITION. -- WADDINGTON, Robert. A Practical Method for Finding the Longitude and Latitude of a Ship at Sea by Observations of the Moon. London, W. Richardson and S. Clark for the Author, 1763. Small 4o. Disbound, remnants of spine. -- BILLINGSLEY, Case. The Longitude at Sea, not to be Found by Firing Guns, nor by the Most Curious Spring-Clocks or Watches. London: Printed for Richard Mount and John Morphew, 1714. 8o. Half-title. Contemporary marbled wrappers. FIRST EDITION. -- PARKER, Benjamin. Parker's Projection of the Longitude at Sea. Nottingham: Printed by A. Ayscough for S. Hodgkinson, 1731. 4o. Modern boards. Together 4 volumes, condition varies. (4)

細節

[LONGITUDE]. [CHARNIÈRES, Charles François Phillippe de]. Mémoire sur l'observation des longitudes en mer. Paris: L'Imprimerie Royale, 1767. 8o. 3 folding plates. Contemporary marbled wrappers. FIRST EDITION. -- WADDINGTON, Robert. A Practical Method for Finding the Longitude and Latitude of a Ship at Sea by Observations of the Moon. London, W. Richardson and S. Clark for the Author, 1763. Small 4o. Disbound, remnants of spine. -- BILLINGSLEY, Case. The Longitude at Sea, not to be Found by Firing Guns, nor by the Most Curious Spring-Clocks or Watches. London: Printed for Richard Mount and John Morphew, 1714. 8o. Half-title. Contemporary marbled wrappers. FIRST EDITION. -- PARKER, Benjamin. Parker's Projection of the Longitude at Sea. Nottingham: Printed by A. Ayscough for S. Hodgkinson, 1731. 4o. Modern boards. Together 4 volumes, condition varies. (4)