Oeuvres complètes

Related events:

Date	Event
August 1, 1663	Christiaan Huygens received letter from Gutschoven about how to grind small lenses
March 26, 1665	Christiaan Huygens acquired Hooke's Micrographia
August 8, 1673	mentor Constantijn Huygens wrote to Robert Hooke about Leeuwenhoek as "exceedingly curious and industrious"
January 20, 1675	Christiaan Huygens wrote to Henry Oldenburg doubting Leeuwenhoek's observations of globules
February 12, 1675	Henry Oldenburg wrote to Christiaan Huygens about doubting Leeuwenhoek's globules
October 1, 1677	Denis de Dodart wrote to Christiaan Huygens about his admiration for Leeuwenhoek: "people of this merit should be pensioned as external academicians"
February 28, 1678	Christiaan Huygens began a series of observations of little animals replicating and expanding on Leeuwenhoek's
March 14, 1678	Christiaan Huygens observed little animals using dark-ground illumination
June 6, 1678	Christiaan Huygens wrote to Nehemiah Grew about seeing the sperm in human semen
June 11, 1678	Christiaan Huygens observed little animals in water that Leeuwenhoek had sent to him
September 17, 1678	Christiaan Huygens again observed little animals using dark-ground illumination
May 1, 1679	Visited by James, Duke of York, and "several high personages"
May 4, 1679	mentor Constantijn Huygens, writing to his son Christiaan, called Leeuwenhoek the "bourgeois philosopher of Delft"
August 13, 1680	Constantijn Huygens, jr., called Leeuwenhoek "the great man of the century"
June 15, 1684	Visited Christiaan Huygens in Den Haag with the Durven brothers
July 27, 1684	Christiaan Huygens gossiped about Maria Duyst in a letter to his brother Constantijn Huygens
October 1, 1685	Visited by Karl von Hessen-Kassel and Willem Meester sometime in October
March 6, 1689	Christiaan Huygens wrote Letter L-205 to Leeuwenhoek, thanking him for the gift of a mangrove tree and inquires whether L.’s observations of the circulation of the blood could also be seen in the wings of bats, the legs of ducks, and the ears of rats
March 6, 1690	Christiaan Huygens wrote Letter L-208 to Leeuwenhoek about liquids in glass balls and Iceland crystal
July 22, 1692	Christiaan Huygens began second series of observations of little animals replicating and expanding on Leeuwenhoek's

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Who wrote letters to Leeuwenhoek?

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What Leeuwenhoek wrote ...
Wrote Letter L-045 of 1676-11-07 to Constantijn Huygens summarizing the observations of little animals in Letter L-040
Wrote Letter L-051 of 1677-02-15 to Christiaan Huygens to thank him for translating a letter into French
Wrote Letter L-077 of 1678-12-26 to Constantijn Huygens about how son Christiaan's observations of little animals correspond to his own
Wrote Letter L-081 of 1679-04-27 to Constantijn Huygens about the number of sperm in the milt of the cod
Wrote Letter L-084 of 1679-05-15 to Christiaan Huygens to explain more about his observations of little animals
Wrote Letter L-085 of 1679-05-20 to Constantijn Huygens about the number and size of the little animals he was observing
Wrote Letter L-207 of October 1689 to Christiaan Huygens about sending books to his brother Constantijn Huygens in London

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Christiaan Huygens

Maria Duyst van Voorhout

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