Scope and Contents

As shown by the log, by Mr Earnshaw's three timekeepers, by Mr Arnold's two timekeepers, and also by lunar observations. The journal includes a summary of the latitudes and longitudes of 'most of the remarkable places seen in the voyage' [RGO 14/68: 145v].

Scope and Contents

The account relates to the voyage of HMS Investigator under Captain Flinders and observations taken by Inman at Port Jackson. It includes details of problems Inman had with his equipment.

Scope and Contents From the Item:

Book of rough calculations of astronomical observations and of comparisons of the timekeepers, made by Captain Flinders and Lieutenant Ward Flinders. Folios 70-95 are inverted in the volume.

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The series also includes two accounts of the rates of watches by Josiah Emory.

Scope and Contents From the Item:

The series also includes two accounts of the rates of watches by Josiah Emory.

Scope and Contents From the Item:

The series also includes two accounts of the rates of watches by Josiah Emory.

Scope and Contents From the Item:

The series also includes two accounts of the rates of watches by Josiah Emory.

Scope and Contents From the Item:

The series also includes two accounts of the rates of watches by Josiah Emory.

Scope and Contents From the Item:

The series also includes two accounts of the rates of watches by Josiah Emory.

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...

Scope and Contents From the File:

Papers regarding payments for work done on behalf of the Board.

Scope and Contents

Also contains results for 'A continuation of the trial of the late Dr. Postlethwaite's watch' from 12 August - 30 September 1799.

Scope and Contents

With the time kept by the timekeeper No. 543 and with additional remarks on the visibility, sea conditions, and occasionally, the location in which observations were made.

Scope and Contents

Continued from rough book no. 1; see also [RGO 14/66/1: 1*-69].

Scope and Contents

Observations made on board HMS Providence for determining the latitude and longitude by Mr Earnshaw's three watches and by Mr Arnold's watch. The observations end with an account of the shipwreck [RGO 14/68: 133].

Scope and Contents

Tabulated logs of observations, with related remarks. These include observations of equal altitudes; transits of the sun, moon and stars over the meridian; observations on the dip of the magnetic needle; comparisons of Mr Arnold’s watches Nos. 14 and 176 with the clock; comparisons of Mr Earnshaw's watch with the clock; and observations on the tides.

Scope and Contents Astronomical observations made in the course of a voyage to the Northern Pacific Ocean in HMS Providence, commanded by William Robert Broughton, Esquire. These were compiled by the astronomer John Crosley. Observations begin in October 1794 when the ship left England and end on 16 May 1797 when the ship struck a coral reef and was lost. The entries include an account of the shipwreck, copied from the ship’s log book [RGO 14/67: 168r-168v]. Many of the observations relate to the four...

Scope and Contents

Book of rough calculations of astronomical observations and accounts of the daily rates of the timekeepers and their errors. Includes observations written on the back of a sales receipt [RGO 14/66/3: 97v] and on the back of a letter from Robert Brine to Lieutenant Flinders [RGO 14/66/3: 107].
Also included is a list of French phases compiled by Captain Flinders while imprisoned on the island of Mauritius [RGO 14/66/3: 56].

Scope and Contents From the File:

Observations made by John Crosley on his voyage to New Holland (Australia) on board HMS Investigator to carry out surveying.

Scope and Contents

Continued from rough book no. 1.

Scope and Contents

Includes computations of the rates of watches by Arnold and Earnshaw [RGO 14/62: 158r-180r], computations of the latitude and longitude of Rio de Janeiro [RGO 14/62: 181r-196v], tables of the rates of the daily rates of the timekeepers and pocket watches [RGO 14/62: 197], and various mathematical calculations and charts.
Folios 214r-222v are inverted in the volume.

Scope and Contents Minutes of Board of Longitude meetings regarding, among other matters, the rates of various chronometers; Charles Hutton's tables of products, powers and roots of natural numbers; the voyages of HMS 'Resolution' and HMS 'Discovery' and the examination of their log books; John Arnold's improvements to his watches; a suitable site for the Board of Longitude's instruments after the burning of the cupola of the Greenwich Hospital where they had been kept; improvements to reflecting telescopes;...

Scope and Contents Minutes of Board of Longitude meetings regarding, among other matters, tables devised by José Mendoza de Ríos; correspondence with John Crosley (the astronomer with the expedition to New South Wales); a claim for a reward for Charles Mason's work on lunar tables; a report on the Arnold and Earnshaw chronometers going on the voyage of Captain Matthew Flinders; grants and awards to chronometer-makers; the observations of Nathaniel Bliss when he was Astronomer Royal; models of watch escapements...

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...

Scope and Contents From the Item:

Copies of outgoing correspondence from Astronomer Royal, John Pond, and his assistant, Thomas Taylor, at the Royal Observatory. Some of the letters are addressed to chronometer makers. Note that correspondence to more than one person often appears on the same page.