Wrote Letter L-427 of 1704-10-03 to John Chamberlayne as a follow-up to Letter L-407 about tobbacco ashes, the salt crystals obtained from them, and an oily substance obtained by heating the ashes of tobacco

October 3, 1704
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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 his description of salt crystals from a solution of the ashes of tobacco, and of an oily substance, obtained by heating the ashes of tobacco.