Letter, from Antoni van Leeuwenhoek to Henry Oldenburg, dated at Delft
Reference number: EL/L1/11
Date: 11 February 1675

Description
Signed autograph
Observations of the crystallisation of salts and infusions; observations of vinegar, Spanish soap and common soap, aqua fortis (nitric acid and sulphuric acid), pepper, mustard; observations of the globules in the bile of different species of fish; further observations of the optic nerve of cod and cows; observations of cod's roe; objections to Francis Redi's figure of a louse
Figures of the crystallisation of salts attached. Other diagrams mentioned in the letter are not attached.
Partial translation see EL/L1/12
Transcribed and translated in 'Alle de brieven van Antoni van Leeuwenhoek', edited, illustrated and annotated by Committee of Dutch Scientists, part 1, p 230
For summary see 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall & Marie Boas Hall, vol 11, p 175
- Reference number
- EL/L1/11
- Earliest possible date
- 11 February 1675
- Page extent
- 21 pages
- Format
- Manuscript
- Also available on Early Modern Letters Online
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Creator names
Antoni van Leeuwenhoek

Antoni van Leeuwenhoek

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Citation
Antoni van Leeuwenhoek, Antoni van Leeuwenhoek, Letter, from Antoni van Leeuwenhoek to Henry Oldenburg, dated at Delft, 11 February 1675, EL/L1/11, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/el_l1_11/letter-from-antoni-van-leeuwenhoek-to-henry-oldenburg-dated-at-delft, accessed on 15 June 2025
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Related Records
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Translated extract of two letters, from Antoni van Leeuwenhoek to Henry Oldenburg
Creator: Antoni van Leeuwenhoek, Antoni van Leeuwenhoek Reference number: EL/L1/12
Hierarchy
This item is part of:
-
'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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Henry Oldenburg
Recipient -
Antoni van Leeuwenhoek
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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