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Papers on determining galvanic longitudes, 1878 - 1888

Reference Code: GBR/0180/RGO 6/640

Scope and Contents

Correspondence and papers concerning proposals and operations to determine, with the assistance of the Royal Observatory, the longitude of Lisbon, Leiden, the Cape Observatory, Gibraltar, places in Australia, New Zealand and Egypt, and Mauritius; and the difference in longitude between Malta and Bombay. The papers include errors of the Greenwich clock; observations of telegraph signals; J.W. Green's abstract of the Greenwich - Lisbon - South American longitudes; the exchange and summary of time signals with Gibraltar; J. Tebbutt's article from 'The Sydney Morning Herald' on the longitude of Sydney; and observations on determining the difference in longitude between Malta and Bombay. The correspondents include T.E.V. Oppolzer, R. Hall, W.H.M. Christie, D. Gill, F.J.O. Evans, J.R. Hind, G.O. Draper, R.C.J. Ellery, N.R. Pogson, A.R. Clarke, J.A.C. Oudemans, J.J. Thomson, O. Heaviside, C.P. Smyth, W. Spottiswoode, W. Harkness, H. James and L. Darwin.


  • Creation: 1878 - 1888


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 (


2 archive box(es) (2 boxes)

Language of Materials