Wrote Letter L-217 of 1692-04-22 to Richard Waller about the construction of an air pump and experiments with different liquids, seeds and small stones in urine, a hog's hair in the skin of a child, and grains of wheat
Date:
April 22, 1692
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 about …
- construction of an air pump and experiments with different liquids
- finding chervil seeds, red currant seeds and small stones in three different samples of urine
- discovery of a hog's hair in the skin of a child
- pericarp and seed grain of wheat