Porras, y Ruiz (Josef de (fl 1783-1785) petitioner to the Board of Longitude)
Person
Found in 4 Collections and/or Records:
Item
Letter and proposal from Don Josef de Porras y Ruiz, 1784-12-23
Item
Reference Code: GBR/0180/RGO 14/38: 97-109
Scope and Contents
From the Item:
Letter and proposal, with a related letter from Mr Fraser who forwarded the papers to Sir Harry Parker.
Dates:
1784-12-23
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 Don Josef de Porras y Ruiz, 1783-08-18
Item
Reference Code: GBR/0180/RGO 14/42: 12-28
Scope and Contents
From the File:
Correspondence regarding the effects of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
Dates:
1783-08-18
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 Mr Fraser to Sir Harry Parker, 1785-01-21
Item
Reference Code: GBR/0180/RGO 14/38: 96
Scope and Contents
Concerning a proposal by Don Josef de Porras y Ruiz.
Dates:
1785-01-21
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
Minute of Board Meeting respecting a method for finding the longitude proposed by Josef de Porras y Ruiz, 1783
Item
Reference Code: GBR/0180/RGO 14/42: 30-31
Scope and Contents
From the File:
Correspondence regarding the effects of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
Dates:
1783
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).