Scope and Contents From the File:

Correspondence between the Admiralty Office and the Royal Observatory, Greenwich, requesting the loan of chronometers for H M Ships. The principal recipient is John Pond; the principal correspondent is John Barrow. Other correspondents include John Croker, Richard S. Dundas, G. Smith, John Franklin and Sir William Edward Parry.

Scope and Contents From the File:

Correspondence between the Admiralty Office and the Royal Observatory, Greenwich, requesting the loan of chronometers for H M Ships. The principal recipient is John Pond; the principal correspondent is John Barrow. Other correspondents include John Croker, Richard S. Dundas, G. Smith, John Franklin and Sir William Edward Parry.

Scope and Contents The principal part of the notebook is a transcription of a pamphlet by T. Clapp, late Professor of Valo College, entitled 'Conjectures upon the Nature and Motion of Meteors &c', dated 1781, in which Clapp discusses the appearance, velocity, direction, noise, duration of visibility, frequency of appearance, apparent size and equivalent energy of the explosive concussion of meteors, together with the air resistance encountered by meteors and the conjecture that the flames from meteors are...

Scope and Contents From the Series: The first part of collection is comprised of papers concerning the internal affairs of the Board of Longitude, including the granting of awards, accounts, minutes, committee papers, petitions and memorials, the loan of instruments, publications and the payment of staff. These are followed by a wide range of papers relating to the Board's work, concerning clocks, chronometers and other instruments; longitude and latitude; magnetic variation; schemes and inventions; tables; pendulum...

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These include measurements of equal altitudes (by Clock B) and comparisons of the watches of Mr Kendall and Mr Arnold.

Scope and Contents Astronomical observations, rough calculations and notes; many pages are inverted. The volume also includes a number of rough sketches [RGO 14/63: 232v; RGO 14/63: 244v; and RGO 14/63: 377r]; a draft letter [to Lieutenant Hergest] written in English but partly using Greek script concerning a dispute about going on shore near Kealakekua Bay, Hawaii, and Hergest’s accusations that Gooch ‘stole out of the ship’ without speaking to him first [RGO 14/63: 311r-312r]; translations of Polynesian...

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The observations begin with a note on setting up his observatory and equipment on shore. They include observations for the going of the clocks; reductions of the rate of Watch No. 1 from comparisons with Clock (B); observations on the tides; observed azimuths and amplitudes; and observations of the depression of the magnetic needle.

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Bayly begins his observations with a note on setting up his instruments on shore, in which he records the loss or theft of some of his equipment. His observations include comparisons of Watch No. 1 with the astronomical clock at the Cape of Good Hope; meridian zenith distances of the sun and stars; observations on the dipping needle; observations on the tides; distances of the sun, moon and stars; and azimuths taken with a compass of constructed by Dr Knight.

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The observations form a continuous run, with occasional headings based on location (reproduced here).

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Observations of the going rate of the two watches, first from Nevil Maskelyne before the voyage, and then daily during the voyage with signatures from each of the three keyholders, William Bayly, Captain Tobias Furneaux, and First Lieutenants Joseph Shank or later, Arthur Kempe (sometimes signed instead by James Burney, Peter Fannin, Thomas Woodhouse, Robert Browne, Mr Lanyon, or William Hawksey).

Scope and Contents Daily observations of the going rate of the two watches during the voyage, with signatures from each of the three keyholders, William Wales, Captain James Cook, and First Lieutenant Robert Palliser Cooper (sometimes signed instead by Charles Clerke, Joseph Gilbert, or Richard Pickersgill). The rates are recorded alongside the temperatures inside and outside the cabin and comments on any difficulties with proceeding, and on periodic comparisons made between the watches and either the...

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Observations made on board HMS Resolution during her passage to the South Seas on the expedition led by Captain James Cook.

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The observations begin with a note on the going of the astronomical clock and on Mr Arnold’s watch. Included are observations of equal altitudes observed with an astronomical quadrant by Bird; observations for finding the latitude; comparisons of Mr Arnold’s Watch No. 2 with the astronomical clock; transits of the moon and stars over the meridian; and observations on the west variation of the meridian.

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The log book starts with an opening note on adjustments to be made to all observations of time during the voyage, due to the fact that [John Arnold's] timekeeper No. 1 was going too slow for meantime at Plymouth, and No. 2 was going too fast.

Scope and Contents From the Series: The first part of collection is comprised of papers concerning the internal affairs of the Board of Longitude, including the granting of awards, accounts, minutes, committee papers, petitions and memorials, the loan of instruments, publications and the payment of staff. These are followed by a wide range of papers relating to the Board's work, concerning clocks, chronometers and other instruments; longitude and latitude; magnetic variation; schemes and inventions; tables; pendulum...

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With his answers to the same.

Scope and Contents From the Series: The first part of collection is comprised of papers concerning the internal affairs of the Board of Longitude, including the granting of awards, accounts, minutes, committee papers, petitions and memorials, the loan of instruments, publications and the payment of staff. These are followed by a wide range of papers relating to the Board's work, concerning clocks, chronometers and other instruments; longitude and latitude; magnetic variation; schemes and inventions; tables; pendulum...

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This copy of the account was printed with wider margins for remarks and circulated amongst chronometer makers for their opinions.

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Sent by Francis Beaufort to John Pond.

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Sent by Francis Beaufort to John Pond.

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Sent by Francis Beaufort to John Pond.

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Sent by Francis Beaufort to John Pond.

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Sent by Francis Beaufort to John Pond.

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Sent by A.B. Becher to John Pond.

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Sent by Francis Beaufort to John Pond.