- de Meij
- de Molijn
- van den Berch
- Hogenhouck family
- Civic career
- Scientific career
- Delft in Holland
Wrote letter of 1679-07-11 (AB 50) to Lambert van Velthuysen
July 11, 1679
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 signed autograph letter on four quarto pages is currently in Gemeentearchief Delft, III B 58.
Leeuwenhoek wrote this letter about the chalk produced by gouty patients and about bladder stones. It was not published during his lifetime.