N.N.

Half a dozen of Leeuwenhoek's letters are addressed in a variety of ways that make it hard or impossible to identify a correspondent.

1696-10-30   179 Unknown
1697-07-00   186 Luca Giamberti
1697-12-00   190 Johan Arnoldi
1699-02-01   197 N.N.
1699-08-05   202 Directors of the Delft VOC
1700-06-16   213 N.N.
1700-08-00   217 N.N.
1701-04-08   223 Mayors and managers of Delft

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Period 5 - 1702-1712

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What Leeuwenhoek wrote ...
Wrote Letter L-307 of 1696-10-30 to a "gentleman in Brabant", a cover letter accompanying a copy of Sesde Vervolg der Brieven
Wrote Letter L-324 of 1697-07-01 to Luca Giamberti to request that he send Magliabechi's gift book by a freighter from Cologne via Düsseldorf to Dordrecht
Wrote Letter L-331 of sometime between late December 1697 and mid-January to Johan Arnoldi about the book that Magliabechi had sent
Wrote Letter L-352 of 1699-02-01 to a "right honorable sir" about his inspection of a mineral containing gold and silver from the Salida mine in Sumatra; his theory about the formation of gold and silver ores
Wrote Letter L-358 of 1699-08-05 to the directors of the United East India Company in Delft about circulation of the blood in the leg of a scorpion from India that they had sent to him; a description of the eight eyes and the pincers
Wrote Letter L-362 of sometime in October 1699 to Ehrenfried von Tschirnhaus about medicines, his aversion to bleeding and purging, and his preference for tea and coffee as medicine; credulity of people who trust impostors and poorly trained physicians
Wrote Letter L-371 of 1700-06-16 to a "Highly Learned Sir" summarizing his earlier investigations of bees, especially the queen bee and her eggs, and of the propagation of other insects
Wrote Letter L-376 of 1700-08-01 to "Your Most Serene Highness" about the influence of atmospheric pressure on the level of a water column in a glass tube during a capillary rise; comparison to the column of mercury in a barometer

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Life in Holland

in the 1600's

Work in Holland

in the 1600's

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Life in Holland

in the 1600's