Letter, from Jean Dominique Cassini [to the Royal Society]
Reference number: EL/C1/49
Date: 14 February 1665
Description
Autograph letter
Cassini discusses Auzout's hypothesis for the comet's motion
A paper (in Latin) by Cassini is enclosed which provides his own observations of the recent comet in December 1664
There are marginal notes in another hand
Oldenburg endorsed the letter: 'An extract of a letter by Signor Cassini to a person of quality and communicated by Monsieur Auzout for the R Society'
Read to the Royal Society on 15 March 1665
- Reference number
- EL/C1/49
- Earliest possible date
- 14 February 1665
- Page extent
- 5 pages
- Format
- Manuscript
- Also available on Early Modern Letters Online
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Citation
Jean Dominique Cassini, Jean Dominique Cassini, Letter, from Jean Dominique Cassini [to the Royal Society], 14 February 1665, EL/C1/49, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/el_c1_49/letter-from-jean-dominique-cassini-to-the-royal-society, accessed on 22 April 2026
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https://makingscience.royalsociety.org/items/el_c1_49/letter-from-jean-dominique-cassini-to-the-royal-society
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Related Records
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Letter, from Adrian Auzout to [unknown correspondent]
Creator: Adrian Auzout Reference number: EL/A/1
Hierarchy
This item is part of:
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'Early letters': letters from correspondents in natural philosophy sent to the Royal Society and its Fellows
1613-1740 Reference number: EL -
Related Fellows
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Jean Dominique Cassini
Author
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Early Letters
The archival collection known as 'Early Letters' is composed of original manuscript letters sent to, or collected by, the Royal Society from English and foreign correspondents.
Dates: 1613 - 1740
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