Paper, 'Observation of an extraordinary height of the barometer' by George Graham
Reference number: CLP/4i/63
Date: 21 February 1721
Description
Graham, a watchmaker, explains that 'upon Thursday the 21st of December last, observing the barometer much higher than usual; that evening, between seven and eight a clock, I filled a tube with very clean quick-silver (mercury), and found the height a little to exceed 30, 7½ inches'.
Subject: Scientific apparatus and instruments / Meteorology
Read to the Royal Society on 11 January 1721
Published in Philosophical Transactions as 'Observation of an extraordinary height of the barometer, December 21. 1721 [1720]'.
- Reference number
- CLP/4i/63
- Earliest possible date
- 21 February 1721
- Physical description
- Ink on paper
- Page extent
- 2 pages
- Format
- Manuscript
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Citation
Paper, 'Observation of an extraordinary height of the barometer' by George Graham, 21 February 1721, CLP/4i/63, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/clp_4i_63/paper-observation-of-an-extraordinary-height-of-the-barometer-by-george-graham, accessed on 14 April 2026
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Related Publications
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V. Observation of an extraordinary height of the barometer, December 21. 1721 External link, opens in new tab.
Date: 31st December 1721
DOI: 10.1098/rstl.1720.0054
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This item is part of:
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Classified papers: volume 4i concerning 'Physiology, Meteorology, Pneumaticks'
1661-1728 Reference number: CLP/4i
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Classified Papers
The 'Classified Papers' of the Royal Society are papers from British and international natural philosophers and scholars categorised according to subject areas.
Dates: 1592 - 1741
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