Barrow, John, Sir, 1764 - 1848 (1st Baronet, Secretary of the Admiralty)
Found in 547 Collections and/or Records:
Letter stating that Pond should not have refused a public trial of two chronometers by Frodsham, 1830-11-25
Sent from John Barrow to John Pond.
Letters of thanks to the Board of Longitude and requests for publications, 1784 - 1827
Mark Watt on improvements in the construction of compasses, 1827
Correspondence regarding the effect of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
Matthew Adam on improvements in the sextant and quadrant, 1822 - 1825
Nicolai Henrich Jaeger on finding longitude by magnetic variation, 1823
Correspondence regarding the effect of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
Note concerning a chronometer for HMS Rifleman, 1823-09-27
Sent from John Barrow to John Pond.
Note concerning the delivery of chronometers to the depot at Devonport, 1827-10-27
Sent from John Barrow to John Pond.
Note from John Barrow to Dr Thomas Young, 1828-05-12
Originally enclosing the letter and proposal from Lieutenant John Budgen at [RGO 14/37: 439-440] and [RGO 14/37: 441-442].
Note from John Barrow to Dr Thomas Young, 1827-05-16
Originally enclosing the extract of a letter from Fearon Fallows at [RGO 14/35: 458-459].
Note from John Barrow to Dr Thomas Young, 1827-06-05
Originally enclosing the letter from Fearon Fallows at [RGO 14/35: 461-462].
Note from John Barrow to Dr Thomas Young, 1827-07-15
Instructing him to direct Mr Dollond to ship his telescope to the Cape Observatory.
Note from John Barrow to Dr Thomas Young, 1822-10-21
Concerning a letter from Fearon Fallows at the Cape Observatory.
Note from John Barrow to Dr Thomas Young, 1828-05-03
Originally enclosing the letter and proposal from Lieutenant John Budgen at [RGO 14/37: 427-428] and [RGO 14/37: 429-437].
Note from John Barrow to Mr Pond concerning a chronometer for HMS Herald, 1828-10-17
Sent from John Barrow to John Pond.
Note from Mr Barrow to Dr Thomas Young, 1819-03-02
Originally enclosing the proposal by George Barratt at [RGO 14/37: 262-264].
Papers regarding the payment of salaries to members of the Board of Longitude, 1806 - 1823
Includes information regarding salaries of members and imprest monies, financial reports and correspondence with the Admiralty.
Peter Lecount on the causes of the variation of the compass by the ship's position being altered, 1820
Correspondence regarding the effect of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
Petitions for assistance from Benjamin Workman, 1810 - 1818
Some were written while Workman was imprisoned in the debtor's prison at Newgate. The petitions include a poster giving details of his services as a tutor in navigation, mathematics, nautical astronomy, etc. [RGO 14/12: 494].
Reports on Papers, Instruments, etc, 1795 - 1826
Reports on various papers and instruments submitted for examination and discussion by the Board of Longitude.
Superintendence of the Nautical Almanac after Dr Thomas Young's death, 1829-10-22
Thomas Hope on magnetic aura, 1825
Correspondence regarding the effect of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
T.T. Rennell on the squaring of the circle and perpetual motion, 1822
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