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Personal correspondence, 1888 - 1916

Reference Code: GBR/0180/RGO 54/1

Scope and Contents

Ellis's personal correspondence, including a letter sent by a French officer to Sir G.B. Airy regarding an enquiry on magnetic observations at Greenwich from 1576 to the present; a letter from Ellis to H.P. Hollis on the controversy over the discovery of Neptune, including reference to Airy, J. Challis, H.H. Turner, and an article in 'Nature' by 'W.E.P.'; a letter from Hollis providing information on the sidereal period of revolution of Venus, Jupiter and Saturn; Ellis's manuscript notes on a comparison of chronometers at Greenwich and Mokattaru (Cairo) made in November 1874; and a letter from E.W. Maunder, Royal Observatory, Greenwich, containing sunspot statistics derived from Wolf's 'Relative Numbers' and measurements of photographs of the Sun. (MISSING)


  • 1888 - 1916

Conditions Governing Access

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