Wrote Letter L-292 of 1696-07-06 to Nicolaas Witsen about his analysis of the mineral that Witsen sent with Letter L-291, ant stings, and lacquer particles on a tree that originate from the tree itself, not from ants
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 …
Analysis of a mineral from Tartary by melting. How gold and silver already got into a mineral from a Sumatran mine during the creation of the earth. About the increase of metals in ores owing to vapours forced up from the earth. Ants sting with a sting, not with their mouth; lacquer particles on a tree originate from the tree itself, not from ants.