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Papers on earth currents, 1872 - 1911

Reference Code: GBR/0180/RGO 7/119

Scope and Contents

Correspondence with the General Post Office and others on Earth currents, disturbances and the maintenance of underground wires, 1891-1911.

Correspondence with C.O. Grimshaw concerning a fault in a dynamo armature, 1893.

Trace showing Earth current curves, sent by E. Raymond Barker, with correspondence, 1898-1899.

Correspondence with C. Chree concerning the details of arrangements for the registration of Earth currents, 1900.

Correspondence with G.E. Preece concerning a magnetic storm, 1892.

Correspondence with Dr Stein requesting details of a photographic system, 1872.

Paper by William Ellis concerning Earth currents, 1879.

Correspondence with W.G. Adams and Professor Förster concerning Earth currents, 1881.

Notes on the determination of scale for Earth current registers, 1886-1889.

Correspondence with South Eastern Railways concerning Earth current wires and abnormal fluctuations, 1891.

Correspondence with G.E. Preece concerning Earth currents recorded on 4 February 1872 and others of 1872-1875.


  • Creation: 1872 - 1911


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 bundle(s) (1 bundle)

Language of Materials


Former / Other Reference


Finding aid date

2006-03-30 10:43:31+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