London
Found in 341 Collections and/or Records:
Letter from George Sinclair to the Board of Longitude, 1787-10-26
Six letters.
Letter from G.H. Cresswell to the Board of Longitude, 1828-06-28
Originally enclosing a proposal for finding longitude.
Letter from G.W.U. Wedel to the Board of Longitude, 1822-05-12
Two letters and a paper.
Letter from G.W.U. Wedel to the Board of Longitude, 1826-05-19
Two letters and a paper.
Letter from Harrison Balfour to the Board of Longitude, 1814-11-29
Three letters.
Letter from H.C. Jennings on insulating the magnetic needle, 1817-08-12
Letter to the Board of Longitude on his discovery of a method of insulating the magnetic needle to protect the compass from the effects of magnetic deviation.
Letter from Henry Croaker to Dr Thomas Young, 1820-04-09
The letter begins with a table entitled 'truth demonstrated on the laws of equity from Alla to George the Fourth England'.
Letter from Henry Croaker to Dr Thomas Young, 1820-06-18
Containing further observations in verse, which came to him in a dream.
Letter from Henry Croaker to the Board of Longitude, 1818-01-10
Outlining his proposal for finding longitude. Includes a dial table, tables of longitude (for January to December 1818) and a drawing of 'a sun-dial on the perpetual motion'.
Letter from Henry Croaker to the Board of Longitude, 1819-04-09
Outlining his proposal for finding longitude.
Letter from Henry Croaker to the Board of Longitude, 1820-09-25
Concerning the movements of the heavenly bodies.
Letter from Henry Ould to the Board of Longitude, 1790-07-20
Concerning the difficulties of taking observations in Newfoundland and his method of ascertaining an artificial horizon.
Letter from Henry Ould to the Board of Longitude, 1790-08-09
Three letters from Henry Ould of Dartmouth, Newfoundland.
Letter from H.W. Ewington of Liverpool to the Board of Longitude, 1826-03-24
Requesting that they send him 'a few pounds in Confidence'; in return he promised to send a discovery of longitude within fourteen days.
Letter from J. [Amory] to the Board of Longitude, 1823
Two letters.
Letter from J. Brazill to the Board of Longitude, 1818-03-12
Concerning his method of finding true time or longitude by a true amplitude or Azimuth by observation at the sun's rising or setting.
Letter from J. Brazill to the Board of Longitude, 1817-07-16
Two letters, with examples.
Letter from J. Brazill to the Board of Longitude, 1819-02-17
Three letters.
Letter from J. Brazill to the Board of Longitude, 1819-03-26
Three letters.
Letter from J. Brazill to the Board of Longitude, 1819-03-15
Three letters.
Letter from J. Combre on an instrument for finding longitude, 1811-05-14
Letter from J. Herbert to the Board of Longitude, 1820-07-12
Proposal and two related letters.
Letter from James Brisbane to the Board of Longitude, 1786-08-28
In which Brisbane proposes a demonstration of his solution to the longitude problem.
Letter from James Gray to the Board of Longitude, 1824-09-17
Concerning the establishment of an observatory in Sierra Leone.
Letter from James Haviland to the Board of Longitude, 1820-04-02
Two letters from Haviland on an invention by his friend (unnamed); with a related letter from John Barrow.