Scope and Contents Applications for sick leave from Royal Observatory staff and medical certificates sent to the Astronomer Royal, 1895-1909. The correspondents are F.W. Dyson, H.P. MacManus, G.E. Niblett, J. Simmons and C.J. Symms.Correspondence with employees confined to their homes for a quarantine period for smallpox and with doctors regarding safeguards for the rest of the Royal Observatory staff, 1902. The correspondents are G. Bischlager, F.W. Dyson and W.G. Thackeray.Applications for...

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A proof copy of the 'British Astronomical Association. Comet Catalogue' (Perth, 1925) by A.C.D. Crommelin, containing many annotations, probably made by the author. Attached to the back cover is a paper in French entitled 'Comètes et Météores' - an extract from 'L'Annuaire Astronomique et Météorologique Camille Flammarion' for 1934, including a dedication to Crommelin by the author, F. Baldet.

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Tables, graphs and notes by P.H. Cowell and A. Crommelin relating to the computation of the orbit of the eighth satellite of Jupiter by mechanical quadratures.

Scope and Contents Correspondence and papers regarding A. Crommelin and C. Davidson's expedition to Sobral, Brazil, for the total eclipse of 29 May 1919. The purpose of the expedition was to determine whether light is deflected by gravitation in accordance with Einstein's Theory of Relativity. There are a number of photographs, a typed report by Crommelin on the purpose of the expedition, computations, manuscript reports on preparations for the eclipse and on the expedition, a set of correspondence between...

Scope and Contents Correspondence with Donald Sadler, including copies of official correspondence between H.M. Nautical Almanac Office and the U.S. Navy N.A.O. The subjects include the use of 'Nautical Almanac' material in the B.A.A. Handbook, with some mention of the copyright position and reproduction fee; the recomputation of Crommelin's Perturbation Tables, mentioning the use of (human) computers in the N.A.O. and British Astronomical Association in September 1947; the use of 'National Machines' in this...

Scope and Contents Miscellaneous correspondence with the Royal Observatory, Greenwich:Letters on technical matters from F.W. Dyson, A. Crommelin and J. Jackson concerning the motion of the Moon, star catalogues and proposed changes to tables, 1923-1925.General correspondence between L.J. Comrie, F.W. Dyson and the Chief Assistant at Greenwich, 1926, including letters regarding calculations of the places of Bucklund-Hough stars and the Eros comparison stars.General correspondence...

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A French obituary of Dr A.C.D. Crommelin by P.J. Melotte, reprinted from 'Ciel et Terre', No. 4, April 1940, and originally from 'The Observatory', January 1940. It includes an engraving of Crommelin.

Scope and Contents (1) Correspondence between the Admiralty and the Astronomer Royal regarding staff appointments, applications and regulations:G.S. Criswick, Second Class Assistant, retires on a pension, 1896.H.P. Hollis, Second Class Assistant, promoted to First Class Assistant, 1896.P.H. Cowell appointed Chief Assistant, 1896.H. Outhwaite appointed Clerical Assistant, 1897.W.C. Nash, Superintendent of the Magnetical and Meteorological section, retires on a pension,...

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 Miscellaneous papers relating to supernumerary computers:Correspondence concerning militant behaviour by J. Toms, 1880.Written list of the names of computers, 1836-1872, compiled c. 1880.Application from F. Willoughby to be transferred to the Spectroscopic Department, 1885.Application from E. Finch to be transferred to the Physical Department, 1886.Correspondence with A. Bowden concerning computing work done at home, 1886.Letter from F.C....

Scope and Contents Papers concerning occasional orders given to supernumerary computers:(1) Granting of certificatesRecommendations from staff that certain individuals be granted a certificate asserting their competence to use particular pieces of equipment and notes from the Astronomer Royal announcing these grants, with an index at the beginning:Memorandum by W.H.M. Christie to E. Dunkin recommending a certificate for W.A. Peat, 1881.Note by Airy stating that...

Scope and Contents Correspondence with the Helwan Observatory concerning the photographing of Halley's Comet, 1909-1910.Correspondence with W.J. Spratly, 1907, concerning the period of Halley's Comet, the more philosophical aspects of the comet and its connections with early Egyptian history.Memoranda on and ephemerides of Halley's Comet, mostly by A.D.C. Crommelin, 1908-1910.Correspondence with J. Franklin Adams concerning his visit to the Royal Observatory and a photograph of Halley's...

Scope and Contents (1) Papers on appointments at various observatoriesAssistant at Helwan, 1907.Mechanical Assistant at Helwan, 1908.Ceylon Survey Department, Assistant Astronomer, 1908.Government Astronomer, New South Wales, 1911-1912.First Assistant at Hong Kong, 1912.Candidacy of A.C.D. Crommelin for the Directorship of the Dunsink Observatory, 1912.Appointment of J.E. Evans as Second Assistant at Ceylon, 1912.Appointment of Assistant...

Scope and Contents Miscellaneous correspondence and related papers regarding physics, including the following material:Correspondence with the Royal Aircraft Factory, South Farnborough, regarding testing the action of sunlight on linen fabric, 1918.Correspondence concerning general physics, 1916-1923, relating mainly to Einstein's theories; requests for information on the 1919 Eclipse observations at Sobral, Brazil; and a report on photographs. There is also a report of the Committee of the...

Scope and Contents Correspondence between Sir George Airy and the Admiralty on the difficulty of obtaining a sufficient number of suitable applicants for the post of Second Class Assistant to the Astronomer Royal, 1880. The correspondence covers discussion of the postponement of the examination of applicants, the suitability of the existing examination requirements, and the possibility of revising them. The correspondents are Sir George Airy, S. Butler, W.H.M. Christie, A. Fowler, R. Hall, E. Headlam, M....