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The Royal Society: Science in the Making

Correspondence Explorer

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Showing 12 letters from 1722–1727

12 letters from John Horsley; 0 letters from James Jurin

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Discussing rays of light, particularly about red rays

Reference number: EL/H3/98

Concerning reflection of light; concerning barometric readings during a storm

Reference number: EL/H3/99
1723

Gives observations of the weather in Widdington near Morpeth, Northumberland, in particular the amount of rainfall with a list of measurements between 1 April 1722 to 1 April 1723 Read to the Royal Society on 23 May 1723

Reference number: EL/H3/100

Account of a man called Thomas Brown who suffered from double vision following a fall from a horse

Reference number: EL/H3/101

Outlines his theory of curvature and centripetal forces with mathematical formulae and figures

Reference number: EL/H3/102
1724

Concerning his revisions to his theory of curvature; concerning experimetns with glass gurnets; sends information about experiments carried out in Newcastle (details not specified)

Reference number: EL/H3/103

Sends further instalments of his weather diary and provides some methodology for his measurements; concerns further explanations of his theory of curvature

Reference number: EL/H3/104

Observations of the eclipse of the sun with details about how he did this (camera obscura and pendulum clock); lists six questions about curvature and the laws of centripetal forces

Reference number: EL/H3/105
1725

States that he has not been able to send his weather diary but does give some barometric readings; details of a man who voided two large stones (see EL/H3/107 for more details)

Reference number: EL/H3/106

Further details of a man who voided two large stones - sends specimens and an account from the surgeon (EL/H3/108); Horsley believes the masses were excrescences

Reference number: EL/H3/107
1726

States that he is going to Glasgow to carry out some experiments (not specified) and will carry out any other services as required whilst there

Reference number: EL/H3/109
1727

He had sent a [meteorological] register for last year. His absence from home has led to a little irregularity, but nothing material. The copying was done by a schoolmaster, very awkwardly, but it is too late to have a better transcription made. Horsley draws attention to the quantity of rainfall.

Reference number: MA/47/1