London
Subject
Subject Source: Local sources
Found in 9 Collections and/or Records:
Item
Letter from William Cragg to Andrew Aiken, 1819-06-16
Item
Reference Code: GBR/0180/RGO 14/39: 55-59
Scope and Contents
From the Item:
Eight letters from Cragg concerning his proposal for finding longitude by a ship's reckoning using a compass and charts, without the assistance of celestial lights or books of calculation. Includes charts for sailing [RGO 14/39: 53] and [RGO 14/39: 68v].
Dates:
1819-06-16
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to Andrew Aiken, 1819-07-26
Item
Reference Code: GBR/0180/RGO 14/39: 60-61
Scope and Contents
Concerning longitude and enclosing a chart.
Dates:
1819-07-26
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to [Andrew Aiken], 1820-04-27
Item
Reference Code: GBR/0180/RGO 14/39: 62-64
Scope and Contents
Concerning his theories on finding longitude.
Dates:
1820-04-27
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to Dr Thomas Young, 1820-08-12
Item
Reference Code: GBR/0180/RGO 14/39: 65-66
Scope and Contents
Originally enclosing papers on finding longitude.
Dates:
1820-08-12
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to Dr Thomas Young, 1821-09-06
Item
Reference Code: GBR/0180/RGO 14/39: 67-69
Scope and Contents
Outlining his proposals for finding longitude and enclosing a chart.
Note: folios 67-69 were originally bound in the wrong order and should be read 69, 67-68.
Dates:
1821-09-06
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to Dr Thomas Young, 1828-05-20
Item
Reference Code: GBR/0180/RGO 14/39: 72-72a
Scope and Contents
Proposing the use of a mechanical apparatus which could be 'affixed' to a ship to measure its progress, with the distance travelled then used to determine longitude.
Dates:
1828-05-20
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to Lord Melville, 1818-08-10
Item
Reference Code: GBR/0180/RGO 14/39: 53-54
Scope and Contents
Includes a chart to work out latitude or longitude at sea from any place.
Dates:
1818-08-10
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
Letter from William Cragg to the Board of Longitude, 1821-09-07
Item
Reference Code: GBR/0180/RGO 14/39: 70-71
Scope and Contents
Requesting permission to use the observatory at Greenwich.
Dates:
1821-09-07
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Item
William Cragg on the cause of the variation of the magnetic needle, 1825 - 1828
Item
Reference Code: GBR/0180/RGO 14/43: 476a-484
Scope and Contents
From the File:
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.
Dates:
1825 - 1828
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).