Scope and Contents Correspondence on the need for the Abinger Magnetic Observatory and on the establishment of the observatory, including the following material:Correspondence with Admiralty departments and officials, 1923-1937, including the Scientific Research Department, the Civil Engineer-in-Chief, the Hydrographic Department, the Director of Electrical Engineering, Sir Vincent Baddeley, Col. R.G. Hayes, the Director of Naval Construction and the Secretary of the Admiralty concerning the move,...

Scope and Contents Miscellaneous correspondence concerning chronometers:Correspondence with the British Horological Institute concerning the nomination and election of the Astronomer Royal as an honorary member, 1882.Correspondence with Kew Observatory concerning the rating of chronometers, 1888, including 'an abstract of the principal changes of rate of marine chronometers at Kew Observatory'.Printed notices of the quarterly meetings of the Worshipful Company of Clockmakers,...

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Correspondence concerning the 'Comité International Météorologique et Commission Internationale de Magnetisme Semestre', with copies of quarterly summaries of days classified according to magnetic disturbance, sent to the Director of the Royal Meteorological Institute, Netherlands; a report on magnetic work undertaken, sent to the Cassiot Committee, 1924; and a list of the magnetic work undertaken at the Kew Observatory.

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Correspondence regarding meetings of the Royal Society's Gassiot Committee and various sub-committees, agenda and minutes of meetings, and reports on research programmes and work undertaken at the Kew, Eskdalemuir and Valentia Observatories on subjects such as atmospheric ozone, atmospheric radiation and temperature, solar radiation, meteorological observations and terrestrial magnetism.

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Agenda and minutes of meetings of the Royal Society's Gassiot Committee and sub-committees; reports on work undertaken at the Kew, Eskdalemuir and Valentia Observatories; and applications for grants.

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Correspondence with G.G. Stokes, J.P. Gassiot and others on the Greenwich Dip Instrument. The papers include printed correspondence between Kew Observatory and Airy; a report of the Kew Commission of the British Association for the Advancement of Science; and readings from Airy's Dip Instrument, 1863-1864.

Scope and Contents (1) Correspondence regarding general committee business of the Royal Society, including the following items:Correspondence concerning agenda, minutes and other matters relating to the meetings of various committees, 1928-1947, including the Gassiot Committee, Soiree Committee, International Relations Committee, British National Committee, Newton Tercentenary Committee, Meteorological Research Committee, Joint Permanent Eclipse Committee, National Committee for Astronomy and the...

Scope and Contents General correspondence relating to the Royal Society, including the following items:Correspondence, minutes of meetings and reports to committees, including the National Committee for Geodesy and Geophysics, 1948; Defence Services Research Committee, 1948-1949; Joint Permanent Eclipse Committee, 1948; National Committee for Astronomy, 1948; Gassiot Committee, 1948; International Relations Committee, 1948; British Council, 1949; Travelling Expenses Committee, 1949; and Soiree...

Scope and Contents Correspondence concerning time signals, including the following material:Correspondence with E. Dent and Co. regarding irregularities in the Westminster Clock, tables of errors for the clock and newspaper cuttings relating to it, 1902-1906.Correspondence regarding the installation of a wireless-telegraph receiving station at Greenwich, 1912-1914.Correspondence of 1912-1915 regarding the inauguration of a wireless-telegraph time service from the Eiffel Tower and...

Scope and Contents Miscellaneous correspondence and related papers on the following subjects:Covering letter from W.H.M. Christie to a report by the Board of Visitors, received with thanks by C.A.B. Patey, 1888.Letter from W.H. Preece regarding Treasury matters, 1888.Mr Raikes' reply to a parliamentary question on the time service transmitted by J.W. Board, 1888.Letters from Christie to W.H. Preece regarding reforms of the time signal service, with letters of acknowledgement...

Scope and Contents Miscellaneous correspondence regarding the following subjects:Telegraphs announcing errors and failures in the time signal, 1879-1880.Complaints about the time signal sent to Glasgow, the General Post Office and Portsmouth, 1880-1881.T. Lewis and W.H.M. Christie on the correction of the mean solar clock and errors in the 10 o'clock signal, 1884.Explanation by W.H. Preece to H.H. Turner that the failure of the time signal is due to poor batteries,...

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Correspondence with magnetic observatories, including Eskdalemuir and Kew, regarding staff and other subjects, and with the National Physical Laboratory, regarding instruments.

Scope and Contents Correspondence with various scientific societies, with related papers. There are notices and council minutes for the British Association; reports of the Kew Committee; the report of the committee wishing to publish K.L.C. Rümker's stellar observations; papers relating to W.R. Birt's lunar committee; W. Thomson's report on tidal observations; W.R. Grove's address to the 1866 convention; and J.D. Forbes' address to the 1867 convention. Other articles include a description of the Kew...

Scope and Contents Miscellaneous correspondence with the Royal Society relating mainly to the re-establishment and expansion of astronomy after the Second World War. The papers include the following items:Correspondence concerning the re-equipping of Cambridge observatories, 1948.Minutes of the meeting of the Gassiot Committee on 31 October 1947, with reports from the Kew and Eskdalemuir Observatories.Correspondence concerning Maskelyne manuscripts, 1947.Correspondence regarding...

Scope and Contents The bulk of RGO 66 comprises the incoming and copy correspondence of the chief assistant, later superintendant, George Mathews Whipple during 1871-5. Much of it is with the chemist and astronomer Warren De La Rue whose photoheliograph was moved to and used at Kew in the early 1870s. The correspondence is largely concerned with solar photographs and the practicalities of their production. There are a few financial papers and some records of solar and lunar observations made both at Kew and...

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RGO 67 largely consists of a good run of contact prints from glass plate negatives of the sun produced between January 1862 and January 1872. The most significant breaks are December 1862-May 1863 and August-September 1872. Additionally there are a handful of glass plate negatives and contact prints produced in 1858-9, and one further negative dated 1866. The sequence of images is essentially continued by RGO 51: RO and RGO Solar Plates Contact Prints.

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RGO 57 contains drawings of sunspots showing their development, size and grouping, with tables recording the number of sunspots for each year.

Scope and Contents Papers relating to the appointment of the Radcliffe Observer at Oxford, 1897.Papers relating to the appointment of the Director of the Dunsink Observatory, 1897, including applications from the Royal Observatory staff.Correspondence with Professor Aldis concerning the establishment of the Magnetic and Meteorological Observatory at Auckland, New Zealand, 1890.Papers relating to Bidston Observatory, Liverpool, 1890-1893, including suitable work, 1890; the appointment of...

Scope and Contents (1) Miscellaneous papers concerning geodesy pendulumsCorrespondence with Kew Observatory, 1874, concerning the correction of the sidereal clock and the extending of the period of transmission of time signals.Printed extract from Walker's report of the survey of India, 1874.Letter from W. Harkness of the U.S. Naval Observatory concerning pendulum swings at the Transit of Venus stations and asking what base stations to use, 1874.Correspondence with Captain...

Scope and Contents Correspondence with E. Dent and Co. concerning the replacement of the escape wheel of the magnetic declination time piece, 1891. Correspondence with Troughton and Simms concerning the repair of the declination magnet theodolite, 1892.Correspondence with A. Reuker concerning the design of declination magnets, 1898.Correspondence with the Kew Observatory concerning the supply of a unifilax magnetometer to the Royal Observatory, 1890-1891.Correspondence with...

Scope and Contents Correspondence and papers concerning new magnetic instruments and results of tests. There are papers regarding the annual examination of magnetic declinations; horizontal force magnets; damper experiments with the declination magnets; old vertical and horizontal force instruments; lists of dislocations of the vertical force magnets; new vertical force magnets; comparisons of the Greenwich photographic records with those at Kew Observatory; magnet thermometer line graphs; a new underground...

Scope and Contents Copies of letters of Sir George Airy, Astronomer Royal, concerning 'A new form of numerical expression of magnetic perturbations', 1872.Copies of letters of Airy concerning papers giving the daily range of magnetic declination, 1878.Copies of notes for the examination of diurnal magnetic curves, 1879.Correspondence with W.J. Cockburn-Muir concerning the latitude of the north magnetic pole, 1879.'A comparison of daily variation with sun spots',...

Scope and Contents Papers relating to the business of Royal Astronomical Society committees, including a graph of the distribution of proper motions resolved in the direction of the solar ant-apex; papers of the R.A.S. Geophysical Society; a list of R.A.S. committees, 1927; Annual Reports of the Kew Observatory (general and Upper Air Section), 1934-1935; Annual Report of the Eskdalemuir Observatory, 1935; Annual Reports of the Valentia Observatory, 1934-1935; and a programme of sessions and ballot at the...

Scope and Contents Correspondence regarding solar photography at the Royal Observatory. There is an index listing the following sections:1. 'Photos to complete the Greenwich Series': correspondence with the Solar Physics Observatory, South Kensington, and the Trignometrical Branch, Survey of India, Dehra Dun, India, comprised mainly of requests for the supply of photographs to fill the gaps where no photograph was taken at Greenwich due to the weather conditions. There is also correspondence between...

Scope and Contents (1) Papers relating to the Geodetic AssociationLetter to the Admiralty concerning the Geodetic Association Conference in Rome, 1883.Correspondence with Colonel A.R. Clarke concerning the Rome conference, 1883.Letter to Dr Hirsch concerning resolutions passed at the Rome conference, 1883.Letter to Col. Donnelly concerning copies of the proceedings of the Rome conference, 1883.Telegram from Col. Donnelly stating that engineers are visiting him,...