LONGITUDE -- An Act for Providing a Publick Reward for such Person or Persons as shall Discover the Longitude at Sea. London: 1714. 310 x 193mm. 3 leaves. Disbound. -- An Act for rendering more effectual an Act ... intituled 'An Act for providing a Publick Reward' ... for discovering the Longitude. London: 1762. 294 x 193mm. 3 leaves. Disbound. -- An Act for the Encouragement of John Harrison, to publish and make known his Invention of a Machine or Watch, for the Discovery of the Longitude at Sea. London: 1763. 306 x 197mm. 4 leaves. Disbound. -- An Act for granting to His Majesty a certain Sum of Money out of the Sinking Fund ... and for paying John Harrison a further Reward for his Invention of a Time-keeper for ascertaining the Longitude at Sea. London: 1773. 337 x 210mm. 11 leaves. Disbound. -- And 2 further acts, all preserved in 4 modern morocco-backed cloth boxes; and 2 volumes of related interest. (8)

细节

LONGITUDE -- An Act for Providing a Publick Reward for such Person or Persons as shall Discover the Longitude at Sea. London: 1714. 310 x 193mm. 3 leaves. Disbound. -- An Act for rendering more effectual an Act ... intituled 'An Act for providing a Publick Reward' ... for discovering the Longitude. London: 1762. 294 x 193mm. 3 leaves. Disbound. -- An Act for the Encouragement of John Harrison, to publish and make known his Invention of a Machine or Watch, for the Discovery of the Longitude at Sea. London: 1763. 306 x 197mm. 4 leaves. Disbound. -- An Act for granting to His Majesty a certain Sum of Money out of the Sinking Fund ... and for paying John Harrison a further Reward for his Invention of a Time-keeper for ascertaining the Longitude at Sea. London: 1773. 337 x 210mm. 11 leaves. Disbound. -- And 2 further acts, all preserved in 4 modern morocco-backed cloth boxes; and 2 volumes of related interest. (8)