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Confirmed minutes, 1737 - 1779

Reference Code: GBR/0180/RGO 14/5
Confirmed minutes of the Board of Longitude, 1737-1779
Confirmed minutes of the Board of Longitude, 1737-1779

Scope and Contents

Minutes of Board of Longitude meetings regarding, among other matters, discussions on John Harrison's first marine chronometer (H1); the purchase of new instruments for work on the longitude and latitude of the coasts of Britain; improvements to the reflecting telescope; Tobias Mayer's lunar motion tables; the trial of John Harrison's chronometers; errors in the tables of the satellites; Schutz's machine for finding longitude; Chistopher Irwin's marine chair; the use of lunar observations for finding longitude at sea; Nevil Maskelyne's use of Hadley's Quadrant; Lyons's method for finding the corrections of the refractions of parallax; attempts to obtain observations made by James Bradley when he was Astronomer Royal; the publication of the 'Nautical Almanac'; the mural arc at Greenwich; John Harrison's attempts to claim the reward for his work on chronometers and finding longitude at sea; the construction of further chronometers by John Harrison's son and Larcum Kendall; Lysle and Swedenberg's method of discovering longitude at sea; the trial of John Arnold's timekeeper; the voyages of HMS 'Resolution' and HMS 'Adventure'; the printing of Edward Halley's Journal; the tables of Leonhard Euler; Thomas Mudge's objections to the trial method for chronometers; the voyages of HMS 'Resolution' and HMS 'Discovery' under Captain James Cook to the South Seas and the nautical and astronomical work carried out; work by Jesse Ramsden and others on accurate divisions for mathematical instruments; a prize claimed by Charles Mason for work on solar and lunar tables; a petition by J. Shelton; and J. Richmond's instrument for taking horizontal angles at sea.


  • Creation: 1737 - 1779


Conditions Governing Access

From the Management Group:

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1 volume(s) (1 volume (179 ff.))

Language of Materials


Former / Other Reference

Vol. V

Original geographic information

South Pacific Ocean [subject]

Finding aid date

2006-05-02 10:24:25+00:00

Includes index.

Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
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Cambridge CB3 9DR United Kingdom