Wrote Letter L-090 of 1679-07-11 to Lambert van Velthuysen about about the chalk produced by gouty patients and about bladder stones
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.
An extract from the letter written and signed by Leeuwenhoek on two folio pages is preserved at the Royal Society, Early Letters L1.44. A partial translation is Early Letters L1.43.
Leeuwenhoek wrote this letter about the chalk produced by gouty patients and about bladder stones. It was not published during his lifetime.
Extract by Leeuwenhoek of his letter which he sent with Letter EL/L1/45 to Robert Hooke. He observed people with gout in their finger joints, and about a certain man who tried Moxa (Chinese remedy for gout) to relieve the symptoms of gout; bladder-stones