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A copy of a draft memorandum on an 'Assessment of Madeira (as at 12.12.73)', with contour maps of Mauna Kea.

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

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Sent from John Croker to John Pond.

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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.

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Daily entries, beginning on 13 July when the ship left Plymouth travelling towards Madeira, in company with the Resolution. Bayly begins with an observation on latitudes taken at Drake's Island and Plymouth. His log entries contain many notes on sea conditions, while entries for 22-24 July include lunar observations from which he calculates longitude from Greenwich [RGO 14/56: 5r-5v]. On 21 July he observes that the ship passed Cape Portugal, approaching Madeira on 28 July.

Scope and Contents 'Abstract of a Jurnal in the Ship "Speaker" by Capt Scott from England towards Bombay and from Bombay to England in the years 1769 and 1770 - In the Hon'ble East India Company Service.' This summarised account of a voyage of the East Indiaman 'Speaker', travelling from England to Bombay, was compiled by Robert Bishop, based on the journal of Captain Robert Scott. Entries are daily and run from 4 April until 26 August 1769 (when the ship arrived at Bombay, travelling via Madeira...

Scope and Contents 'Abstract of a Jurnal from England towards Java Head and from Java Head to England in the ship "Duke of Gloucester" by Capt John Laudor - In the Hon'ble East India Company Service. In the years 1768 and 1769.'This summarised account of a voyage of the East Indiaman 'Duke of Gloucester', travelling from England to Java Head, was compiled by Robert Bishop, based on the journal of Captain John Laudor. Entries are daily and run from 2 February until 29 June 1768, when the ship...

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Sent from John Barrow to John Pond.

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Sent from John Barrow to John Pond.

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Sent from John Croker to John Pond; for a related letter see [RGO 5/229: 51-52].

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Sent from John Croker to John Pond.

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The letter refers to the award of 100 guineas to Dr Franks for his work in determining the longitude of the island of Madeira.

Scope and Contents Log entries covering the voyage between Plymouth and Madeira. The entries are mostly daily, with some summarised. On 2 July Wales notes that [Admiral Sir Hugh] Palliser and some other gentlemen came on board and were saluted with ‘three cheers’ by the seamen. Before the ship set sail, Wales and Bayly took observations on shore at Drake’s Island. On 10 July he carried the timekeepers ashore to set the time, noting that Mr [John] Arnold set his timekeeper himself; the timekeepers were then...

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

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A copy of a memorandum prepared by Bennet McInnes for the Northern Hemisphere Observatory Planning Committee on 'A Tentative Comparison of Mauna Kea (Hawaii), Encumeada Alta (Madeira) and Fuente Nueva (La Palma)', dated 16 October 1973.

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A copy of a memorandum by Bennet McInnes for the Northern Hemisphere Observatory Planning Committee on 'Reconnaissance Visits to Madeira', 20 August 1973.

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A copy of a memorandum prepared by Bennet McInnes for the Northern Hemisphere Observatory Planning Committee entitled 'Comparison of Observing Conditions in Madeira and in the Canary Islands', 8 May 1974.

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Copies of three memoranda prepared by Bennet McInnes for the Northern Hemisphere Observatory Policy Committee: 'Ordinances Designed to Limit Astronomical Light Pollution', 'Selection of the Site' and 'Meteorological Publication of Interest to the Project'.

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Sundry observations taken by John Horsley aboard the Glatton, commanded by Richard Doveton, on a voyage to Benkulen and China. Entries are intermittent, with occasional notes; references are also made to Madeira and Java Head.

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

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Made in HMS Investigator during a voyage of discovery to the South Sea in the years 1801-1805.

Scope and Contents Observations made on Captain Cook’s third voyage. Includes summarised daily entries providing the date, estimates of latitude and longitude, bearings and distance, variation of the compass, and thermometer readings, along with intermittent entries of astronomical calculations. The ship travelled via Madeira and via Port Praya in St. Iago towards the Cape of Good Hope, anchoring at Table Bay on 10 November 1776 [RGO 14/67: 76v]. There are no entries for December 1776 or January 1777....

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

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

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A copy of a memorandum prepared by Bennet McInnes for the Northern Hemisphere Observatory Planning Committee on 'Meteorological Conditions over Madeira', dated 30 August 1973, with a paper on 'The predominant meteorological situations in the eastern Northern Atlantic to the South of 45ºN'.