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The Royal Society: Science in the Making

Unpublished letter and observations, barometrical observations made passing from the Tropic of Cancer to the Tropic of Capricorn from Captain P [Peter] Heywood to [James] Horsburgh

Reference number: AP/7/8

Date: October 1807 - March 1808

Description

Register of hourly barometrical and meteorological observations made during a crossing from the Tropic of Capricorn to the Tropic of Cancer on HMS Polyphemus from October-November 1807 by Captain Heywood. Preceded by a covering letter to James Horsburgh.

Subject: Meteorology

Reference number
AP/7/8
Earliest possible date
October 1807 - March 1808
Physical description
Ink on paper
Page extent
23 pages
Format
Manuscript

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Citation

Unpublished letter and observations, barometrical observations made passing from the Tropic of Cancer to the Tropic of Capricorn from Captain P [Peter] Heywood to [James] Horsburgh, October 1807 - March 1808, AP/7/8, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/ap_7_8/unpublished-letter-and-observations-barometrical-observations-made-passing-from-the-tropic-of-cancer-to-the-tropic-of-capricorn-from-captain-p-peter-heywood-to-james-horsburgh, accessed on 19 August 2026

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https://makingscience.royalsociety.org/items/ap_7_8/unpublished-letter-and-observations-barometrical-observations-made-passing-from-the-tropic-of-cancer-to-the-tropic-of-capricorn-from-captain-p-peter-heywood-to-james-horsburgh

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    The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.

    Dates: 1768 - 1989

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