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The Royal Society: Science in the Making

Unpublished letter, regarding theory of pyramids from John Walsh to Davies Gilbert

Reference number: AP/14/20

Date: 19 November 1830

Description

Walsh illustrates a geometrical example in an effort to establish a theory of pyramids that does not rely on the theory of exhuastions. An ink inscription final page verso reads 'Not to be read'.

Subject: Mathematics

Written by Walsh in Leitrim Street, Cork [Ireland] and addressed to Gilbert in Bridge Street, Westminster, London. Postmarked 21 and 23 November 1830.

Reference number
AP/14/20
Earliest possible date
19 November 1830
Physical description
Ink on paper
Page extent
2 pages
Format
Manuscript

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Citation

Unpublished letter, regarding theory of pyramids from John Walsh to Davies Gilbert, 19 November 1830, AP/14/20, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/ap_14_20/unpublished-letter-regarding-theory-of-pyramids-from-john-walsh-to-davies-gilbert, accessed on 17 February 2026

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https://makingscience.royalsociety.org/items/ap_14_20/unpublished-letter-regarding-theory-of-pyramids-from-john-walsh-to-davies-gilbert

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  • Archived Papers

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is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.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