- de Meij
- de Molijn
- van den Berch
- Hogenhouck family
- Civic career
- Scientific career
- Delft in Holland
Wrote Letter 21 of 1677-10-05 (AB 33) to Henry Oldenburg
October 5, 1677
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
Leeuwenhoek wrote this letter to Henry Oldenburg (who had died a month earler in September) about skin, eels, fleas, and measuring and counting microorganisms.
He enclosed five letters with the testimony of eight credible eye-witnesses to microorganisms in infusions.