Skip to main content

Draft letter from Maskelyne to the Board of Longitude, 1763-12-22

Reference Code: GBR/0180/RGO 4/320/7: 1-4

Scope and Contents

The undated draft letter concerns the eclipses of Jupiter's satellites and the deduction of longitude from observations made on board HMS Princess Louisa during a voyage to Barbados. Maskelyne mentions his inability to make these observations from either of Christopher Irwin's marine chairs, which he had been asked by the Commissioners of the Board of Longitude to use and give an opinion on. On the reverse are observations made by Maskelyne whilst in Barbados.


  • Creation: 1763-12-22


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 (


4 folio(s) (4 ff.) : Paper

Language of Materials


Date information

DateText: circa.


Maskelyne, Nevil

Original geographic information

Barbados [subject]

Finding aid date

2013-03-12 17:02:36+00:00


Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom