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Observations and calculations of longitude, 1854 - 1860

Reference Code: GBR/0180/RGO 6/114

Scope and Contents

Observations and calculations concerned chiefly with finding the longitudes of places, including Indonesia, Bombay, Port Natal and Port Elizabeth by Lieutenant Dayman, from observed occultations, star observations and solar eclipses during 1854-1855; and Fredericton, Canada, and Cambridge, U.S.A., by W.B. Jack and J.B. Toldervy, with correspondence on their longitudes. There are a few papers on the total eclipse over Australia, 4 April 1856, and maps of the paths of the total eclipse of the Sun, 18 July 1860.


  • Creation: 1854 - 1860


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 archive box(es) (1 box)

Language of Materials


Former / Other Reference


Finding aid date

2006-01-03 10:59:31+00:00

Includes index.

Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom