Skip to content

Please be aware that some material may contain words, descriptions or illustrations which will not reflect current scientific understanding and may be considered in today's context inaccurate, unethical, offensive or distressing.

Letter, from Antoni van Leeuwenhoek to Henry Oldenburg, dated at Deflt

Reference number: EL/L1/15

Date: 14 August 1675


Signed autograph
Further observations of blood corpuscles; observations of arum leaves; concerning the sap in plants and its taste; concerning the sense of taste in regard to sugar and salt; concerning manna (from the bark of 'Fraxinus ornus') and its laxative effects; an account of digestion in humans and the effects of poison
Partial translation of the account of digestion in humans 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 296
For summary see 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall & Marie Boas Hall, vol 11, p 443
English extract printed in 'Philosophical Transactions', vol 10, no 117, p 380

Reference number
Earliest possible date
14 August 1675
Page extent
12 pages

Creator name

Antoni van Leeuwenhoek

View page for Antoni van Leeuwenhoek

Use this record


Antoni van Leeuwenhoek, Letter, from Antoni van Leeuwenhoek to Henry Oldenburg, dated at Deflt, 14 August 1675, EL/L1/15, The Royal Society Archives, London,, accessed on 26 May 2024

Link to this record

Embed this record

<iframe src="" title="Letter, from Antoni van Leeuwenhoek to Henry Oldenburg, dated at Deflt" allow="fullscreen" frameborder="0" width="100%" height="500px"></iframe>

Related Records

Related Fellows


Explore the collection

  • Early Letters

    Dates: 1613-1740

    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.

    View collection