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Mackay, J L, fl1817 - 1818 (petitioner to the Board of Longitude)

 Person

Found in 6 Collections and/or Records:

 Item

Letter from J.L. Mackay to Captain Thomas Hurd, 1818-03-17

Reference Code: GBR/0180/RGO 14/40: 362-363
Scope and Contents

Outlining his proposal to find longitude by a lunar dial.

Dates: 1818-03-17
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 J.L. Mackay to Captain Thomas Hurd, 1818-03-19

Reference Code: GBR/0180/RGO 14/40: 364-365
Scope and Contents

Outlining his proposal to find longitude by a lunar dial.

Dates: 1818-03-19
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 J.L. Mackay to Captain Thomas Hurd, 1818-03-26

Reference Code: GBR/0180/RGO 14/40: 366
Scope and Contents

Containing a recapitulation of his proposal to find longitude by a lunar dial, and suggesting that the lunar dial could also be used to regulate a chronometer.

Dates: 1818-03-26
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 J.L. Mackay to Captain Thomas Hurd, 1817-07-24

Reference Code: GBR/0180/RGO 14/36: 222-224
Scope and Contents

On a method using the difference in time of the appearance of stars.

Dates: 1817-07-24
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 J.L. Mackay to the Board of Longitude, 1818-11-16

Reference Code: GBR/0180/RGO 14/40: 367
Scope and Contents

Outlining his proposed method of finding longitude with a lunar dial.

Dates: 1818-11-16
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 John Mackey to Thomas Hurd, 1816-06-14

Reference Code: GBR/0180/RGO 14/55: 101-101a
Scope and Contents From the Sub-file:

With an index of names.

Dates: 1816-06-14
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).

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Cheltenham 5
Cashel 1