Wrote Letter L-168 of 1686-01-22 to members of the Royal Society about cinnabar naturalis, gunpowder, saltpeter, and air made by gunpowder and crab's eyes

Date: 
January 22, 1686
Standard reference information
L-number: 
L-168
Leeuwenhoek's number: 
48
Collected Letters number: 
89
Collected Letters volume: 
5

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 twelve quarto pages, written by a copyist and signed by Leeuwenhoek, is preserved at the Royal Society (MS. 1908. L 1. 79).