Wrote Letter L-152 of 1685-01-05 to Members of the Royal Society about salts in wine and vinegar and in the stomach, the eye, the need for food and water, Descartes's theory on smallest water particles, and a theory of taste - salt, sour and sweet

January 5, 1685
Standard reference information
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Text of the letter in the original Dutch and in English translation from Alle de Brieven / The Collected Letters at the DBNL - De Digitale Bibliotheek voor de Nederlandse Letteren.

The original manuscript on 21 quarto pages, written by a copyist and signed by Leeuwenhoek, is preserved at the Royal Society (MS. 1902. Early Letters L1.73).

An excerpt was published in Philosophical Transactions, vol. 15, no. 170, dated 20 April 1685. See Publication history below.