The palladium-Supplement, enlarged. [electronic resource] : (price Is.) For the year of our Lord, 1764. Containing The Nature, Usefulness, and Certainty, of the Mathemathematical Sciences. The Insufficiency of Mr. Harrison's Watch (or any other Time-Piece) for discovering the Longitude at Sea; with enumerated Objections, and his Proceedings examined. The Practical Method of discovering the Longitude, now under Consideration, by Observers of it, sent by the Government to the West Indies. New Astronomical Tables, and Equations in Time, of the Moon from the Sun; with Precepts and Examples for computing (in the shortest Way) the true Times of Eclipses, and of all the New and Full Moons, forever, since Creation. Correcting several public Errors in Astronomy and Navigation. Adapted for Use of Seamen. Humbly inscribed to the Commissioners of the Longitude. By the author of the Royal astronomer and navigator.