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Letters to Thomas Maclear from Timms, Gibbs, F. Baily, Taylor, G. Dolland, the Academy of Science in Paris and G.B. Airy regarding Halley's Comet, the printing of observations, instrument problems and their solution and other subjects.

Scope and Contents Correspondence and printed papers on astrology, chemistry, chronology, electricity, galvanism, geography and geology. The correspondents include J.F.W. Herschel, F. Beaufort, J. Gardner, F. Baily, T.R. Birks, P. Kelland, C. Wheatstone, M. Faraday, and Edward and Richard Greswell. There are papers on calotype photography; a proposal for the establishment of a college to promote chemistry; several printed papers on chronology; the 'Report of the Committee on Lightning Conductors'; papers on...

Scope and Contents Observations and reports on solar eclipses, dealing in detail with the eclipses of 11 May 1724, 15 May 1836, 7 July 1842 and 8 October 1847. There is a map for the 1724 eclipse, tracing the areas affected by the eclipse, and a French article by M. Arago on observations of the eclipse near Stonehenge. The material for the 1836 annular eclipse include a sketch of the apparent path of the Moon's centre over the Sun, articles by Airy and from Scottish newspapers, and T. Henderson's observations....

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Airy's official and scientific correspondence, volume 1, including letters from Amici, Baily, Beaufort, Bouvard, Brewster, Carlini, Cerquene, Colby, Davy, Gambart, Garvey, Gilbert, Hamilton, Herschel, Hudson, Hussey, Jenkins, Lardner, Lax, Maclear, Pearson, Pond, Rigaud, Robinson, Rumker, Sabine, Sanchis, Schumacher, South, Stratford and Young, with an index to the correspondents at the end. There are a few letters in French and Italian.

Scope and Contents

Airy's official and scientific correspondence, volume 2, including letters from Arago, Auber, Baily, Barrow, Beaufort, Becker, Cooper, De Morgan, Encke, Forbes, Foster, Gambert, Gilbert, Gregory, Hamilton, Harcourt, Henderson, Herschel, Hudson, Hussey, Inman, Innes, Lax, Lubbock, Maclear, Princess Olive, Parrot, Pearson, Quetelet, Robinson, Schumacher, Sheepshanks, Stratford, Taylor, Tiarks and Tyson, with an index to the correspondents at the end. There are a few letters in French.

Scope and Contents The collection comprises observations, calculations, catalogues, tables and notes of the day-to-day running of the Observatory; observations made prior to Flamsteed's appointment as Astronomer Royal; private and official correspondence; and miscellaneous lectures, memoirs, treatises and other manuscripts on various subjects by Flamsteed and other authors. The papers are principally in Flamsteed's hand, but also feature those of Joseph Crosthwait, James Hodgson and Abraham Sharp, among...

Scope and Contents 2. Cape observations (continued).2/13. 'Star Magnitudes. Trial List', including later workings on star magnitudes running from the end.2/14. Lists of stars ordered according to observed magnitudes, 1835-1838 and 1839-1840, and some miscellaneous observations.2/15. Papers entitled 'Plans &c of the Equatorial Instrument & Revolving Roof. For the Cape'.2/16.1. Guard Book, Vol. III: drawings of nebulae, comets and the Southern Milky Way. With a few...

Scope and Contents Correspondence and papers concerning proposed improvements in clocks and chronometers. The correspondents include F. Baily, F. Beaufort, G. Fisher, A. de Morgan, R. Sheepshanks and W. Tite. The volume includes a paper, originally from 'The Nautical Magazine', titled 'Magnetic Experiments on Chronometers'; a paper, originally from 'The Nautical Magazine', titled 'Glass Balance-Springs to Chronometers'; extracts from 'The County Herald' of October and November 1837 on improvements in...

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Correspondence, computations and records of observations in regard to the correction of compasses on the iron ship 'Rainbow'. The correspondents include F. Baily, W.H. Barlow, W.H.M. Christie, W.T. Denison, G. Dollond, R. Fitzroy and W. Whewell. The papers include plans of the basin in Deptford Dockyard; 'graphical calculations of perturbations from assumed disturbing face of permanent magnets'; and observations of the dipping needle within and exterior to the ship.

Scope and Contents Material concerning work on the geodetic surveys and longitudes in Britain, Europe and India. The papers include two maps of triangulations in Ireland (one on a smaller scale); a plan of principal triangles in Britain; a map of triangulations in Germany; a sketch of triangulations at Royston, Bedfordshire; calculations to find the latitude and longitude of Ben Lomond; triangulations in Scotland and on the Shetland Isles; disturbances of gravity of Shanklin Down, Isle of Wright, with a list...

Scope and Contents Correspondence and papers on magnetic disturbances, experiments and findings on magnetism, magnetic deviations and observations of magnetic phenomena. There are German circulars on magnetism by K.F. Gauss and W.E. Weber; tracings and description of the proposed magnetic observatory at Dublin; a magnetic chart of Scotland, 1836; observations of shifts in the magnetic and dipping needle; notices of magnetic disturbances; readings from the horizontal circle of the magnetic theodolite, the...

Scope and Contents Correspondence regarding, chiefly, meteorological instruments and experiments, with related papers. The volume includes illustrations and a description of G. Dollond's weather instrument for measuring wind, rain, humidity and temperature; material on J.T. Goddard's improved anenometer; instructions for fixing the standard barometer; a piece from the 'Nautical Magazine' on an aneroid barometer; 'Lawson's meteorological thermometer stand'; discussions with J.D. Forbes on one year's...

Scope and Contents Notes regarding additions to instruments, etc., 1850-1853.A catalogue of instruments and furniture belonging to the Royal Observatory, 3 June 1854.Correspondence concerning the receipt of presents sent to the Royal Observatory, 1853-1854.Letters regarding loans to the Royal Observatory and returns, 1853-1854.Correspondence concerning the giving of presents on behalf of the Royal Observatory, 1853.Letters regarding loans from the Royal Observatory and...

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Papers relating to the Royal Astronomical Society's transactions with the Government, including correspondence on the transfer of the 'meridian ephemeris' to the Admiralty; the printing of T. Henderson's Edinburgh observations; the printing of T. Henderson's and T. Maclear's Cape papers; and F. Baily's reproduction of Cavendish's experiment.

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Richard Sheepshanks' correspondence with Airy, F. Baily, Sir J.F.W. Herschel, T. Maclear and W.H. Miller concerning standards and the Standards Commission.