Scope and Contents Correspondence relating to longitude and its determination, including the following material:(1) Correspondence regarding the Potsdam-Greenwich Longitude via Emden and Bracton, 1902-1904.There is correspondence with C.T. Albrecht regarding accommodation, equipment and arrangements with the General Post Office (G.P.O.); correspondence with the G.P.O. regarding the line between the Royal Observatory and Potsdam; and a copy of 'Longitude Difference between Potsdam and...

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Letter from Adolf Reuter to Sir Francis Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from [Friedrich Robert] Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from [Friedrich Robert] Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from [Friedrich Robert] Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Friedrich Robert Helmert to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from P Herker to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from poss Maria Hellmuth née Albrecht to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from S Hirayama to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from S Hirayama to Sir George Howard Darwin; written at Potsdam

(Letter)

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Letter from Sir Sidney Burrard to Sir George Howard Darwin; written at Potsdam

(Letter)

Scope and Contents Letters from various British and international observatories on filling vacancies, an enquiry into the transfer of Edinburgh Observatory, requests for new instruments, and the current state of work carried out at various centres. The correspondents include Sir H. Grubb, Lord Lindsay, C.P. Smyth, L. Mallet, Sir C.R. Markham, G.G. Stokes, N.R. Pogson, R.L.J. Ellery, W. De La Rue, C. Pritchard and F.A.T. Winnecke. There are numerous reports from observatories at Adelaide (1875), Dearbourne...

Scope and Contents Notice from C.F. Varley giving a change of address, 1874.Correspondence with Diamilla Muller, Italy, concerning the title and publishers of a work by Sir George Airy, 1874.Correspondence with W. Bond-Paul regarding terrestrial magnetism, 1875, including an unlabelled diagram and a letter from [W.R.A.] titled 'A concise statement of two distinct hypotheses relative to the variation and dip of the needle'.Correspondence with the Revd S.J. Perry concerning the probable...

Scope and Contents Miscellaneous scientific correspondence and papers, including correspondence on the tensile strength of metals; A.R. Clarke on the elasticity of brass; W. De La Rue on the stratified discharge of electricity; drawings of electrical appliances; a paper titled 'the Great Lighting Inductorium'; R. Owen's paper on fossil reptilia of South Africa; a paper by the Eastbourne Natural History Society 'on the sinking of the South Coast of England'; W. Ackland's views on the training of opticians;...