Skip to main content

Confirmed minutes, 1802 - 1823

Reference Code: GBR/0180/RGO 14/7
Confirmed minutes of the Board of Longitude, 1802-1823
Confirmed minutes of the Board of Longitude, 1802-1823

Scope and Contents

Minutes of Board of Longitude meetings regarding, among other matters, tables devised by José Mendoza de Ríos; correspondence with John Crosley (the astronomer with the expedition to New South Wales); a claim for a reward for Charles Mason's work on lunar tables; a report on the Arnold and Earnshaw chronometers going on the voyage of Captain Matthew Flinders; grants and awards to chronometer-makers; the observations of Nathaniel Bliss when he was Astronomer Royal; models of watch escapements produced by John Arnold and Thomas Earnshaw; methods of calculating refraction and parallax; observations made by Captain and Lieutenant Flinders; Edward Massey's patent log and sounding machine; a method of observing the eclipses of Jupiter's satellites at sea invented by John Playfair; the appointment of Thomas Young as Secretary to the Board of Longitude; the establishment of an observatory at the Cape of Good Hope; Rowland's pendulum quadrant; the voyages of HMS 'Hecla' and HMS 'Griper' to the north of America, including questions asked of the officers of these vessels on their return; questions asked of various chronometer-makers about their inventions, with answers; a joint proposal with the Académie des Sciences, Paris, to measure the exact distance between Dover and Calais; the first years of the Cape Observatory under Fearon Fallows; the re-measurement of Lacaille's arc of the meridian; observations of a biennial comet in 1823; the trials of various chronometers and other timepieces; and matters relating to computers and comparers.


  • Creation: 1802 - 1823


Conditions Governing Access

From the Management Group:

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (


1 volume(s) (1 volume)

Language of Materials


Former / Other Reference

Vol. VII

Original geographic information

Atlantic Ocean [subject]

Original geographic information

Cape of Good Hope [subject]

Original geographic information

New South Wales [subject]

Original geographic information

Pacific Ocean [subject]

Finding aid date

2006-05-02 10:24:31+00:00

Includes index.

Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom