February 14, 1678 |
Wrote Letter L-069 to Joseph Williamson, as Grew had requested |
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 |
March 17, 1678 |
Robert Hooke showed the Royal Society microscopical observations of tendons and little animals in anise and coffee |
March 18, 1678 |
Wrote Letter L-070 of 1678-03-18 to Nehemiah Grew about sperm in other animals and what Harvey and de Graaf got wrong about reproduction |
March 24, 1678 |
Robert Hooke read his paper about his microscopic observations and methods |
April 7, 1678 |
Robert Hooke showed the Royal Society microscopical observations of muscle from a lobster's claw |
April 20, 1678 |
Nehemiah Grew wrote Letter L-071 of 1678-04-20 to Leeuwenhoek about his criticisms of Leeuwenhoek's work |
April 28, 1678 |
Johannes Swammerdam wrote to Melchisedec Thévenot, saying that Leeuwenhoek "is biased, and reasons in a very barbarical way" |
April 28, 1678 |
Robert Hooke wrote Letter L-072 to Leeuwenhoek that King Charles saw the little animals in pepper water |
May 5, 1678 |
Robert Hooke showed the Royal Society microscopical observations of the motion and composition of muscles |
May 9, 1678 |
niece Maria Jans de Molijn buried |
May 31, 1678 |
Wrote Letter L-073 of 1678-05-31 to Nehemiah Grew about teeth, bone, hair, and sperm and what de Graaf got wrong about ovulation |
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 |
July 4, 1678 |
Lambert Twent named first postmaster of Delft |
September 17, 1678 |
Christiaan Huygens again observed little animals using dark-ground illumination |
September 27, 1678 |
Wrote Letter L-074 of 1678-09-27 to Nehemiah Grew about sweat and globules in saliva and blood |
October 13, 1678 |
Nehemiah Grew wrote Letter L-075 of 1678-10-13 to Leeuwenhoek that Letter L-073 about male sperm and female ovulation in humans would be printed "as far as decency permits" |
October 14, 1678 |
sister Margrieta Philips Leeuwenhoek buried |
November 6, 1678 |
daughter Maria registered as a member of the Hervormde Gemeente Delft (Reformed Church in Delft) |
November 10, 1678 |
Christiaan Huygens's method of melting powdered glass to make a spherical lens |
December 23, 1678 |
Constantijn Huygens wrote Letter L-076 to Leeuwenhoek about the identification of little animals observed in pepper-water by his son Christiaan as well as the latter’s description of the scales on the wings of butterflies |
December 26, 1678 |
Wrote Letter L-077 of 1678-12-26 to Constantijn Huygens about how son Christiaan's observations of little animals correspond to his own |
January 25, 1679 |
Authorized to administer the estate of Ernst Gerrits de Bruijn |
February 10, 1679 |
Appointed curator; Johannes Blaucamer guarantor |
February 21, 1679 |
Wrote Letter L-078 of 1679-02-21 to Nehemiah Grew about cod sperm and about not finding any little animals in blood or saliva |
April 1, 1679 |
cousin Maerten Huijchs Leeuwenhoek appointed tax master |
April 12, 1679 |
Lambert van Velthuysen wrote Letter L-079 to Leeuwenhoek about arteries and nerves |
April 25, 1679 |
Wrote Letter L-080 of 1679-04-25 to Nehemiah Grew about living little animals in fish, hare, and dogs and his calculation that more than ten times as many living animals come from the milt of a cod as there are people living on the Earth |
April 27, 1679 |
Wrote Letter L-081 of 1679-04-27 to Constantijn Huygens about the number of sperm in the milt of the cod |
May 1, 1679 |
Visited by James, Duke of York, and "several high personages" |
May 4, 1679 |
Constantijn Huygens wrote Letter L-082 to Leeuwenhoek that his son Christiaan’s new book Dioptrica is about to be published |
May 4, 1679 |
mentor Constantijn Huygens, writing to his son Christiaan, called Leeuwenhoek the "bourgeois philosopher of Delft" |
May 11, 1679 |
Wrote Letter L-083 of 1679-05-11 to Lambert van Velthuysen about people with gout |
May 15, 1679 |
Wrote Letter L-084 of 1679-05-15 to Christiaan Huygens to explain more about his observations of little animals |
May 20, 1679 |
Wrote Letter L-085 of 1679-05-20 to Constantijn Huygens about the number and size of the little animals he was observing |
June 1, 1679 |
Lambert van Velthuysen wrote Letter L-086 to Leeuwenhoek about the chalky discharges from gouty skin and his well-known controversy with the conservative supporters of the House of Orange |
June 13, 1679 |
Wrote Letter L-087 of 1679-06-13 to Nehemiah Grew asking him to acknowledge two letters from earlier that year |
June 13, 1679 |
Wrote Letter L-088 of 1679-06-13 to Lambert van Velthuysen about the origin of life and the lack of appreciation by physicians and surgeons |
June 17, 1679 |
Lambert van Velthuysen wrote Letter L-089 to Leeuwenhoek about procreation |
July 11, 1679 |
Wrote Letter L-090 of 1679-07-11 to Lambert van Velthuysen about about the chalk produced by gouty patients and about bladder stones |
July 20, 1679 |
Robert Hooke read his translation of Letter L-080 of 1679-04-25 at a weekly meeting of the Royal Society |
July 27, 1679 |
Robert Hooke showed the Royal Society microscopical observations of the liquor in a lamb's testicles |
August 1, 1679 |
Robert Hooke wrote Letter L-091 of some time in August 1679 to Leeuwenhoek; now lost |
August 10, 1679 |
Robert Hooke showed the Royal Society microscopical observations of a cock's testicles |
August 15, 1679 |
Appointed city inspector of imported and exported liquids / wine gauger |
August 25, 1679 |
Called "an unlearned, but ingenious man" by Peter Pels |
September 4, 1679 |
colleague Nicolaas van der Sloot appointed co-wine gauger |
September 17, 1679 |
Paid tax on his personal stock of wine |
October 13, 1679 |
Wrote Letter L-092 of 1679-10-13 to Robert Hooke to inquire of Hooke why he had not received any correspondence from the Royal Society for months, also discussed bladder stones |
October 18, 1679 |
Lambert van Velthuysen wrote Letter L-093 of 1679-10-18 to Leeuwenhoek about his delay in responding and gout |
October 27, 1679 |
Robert Hooke wrote Letter L-094 of 1679-10-27 to Leeuwenhoek about examining fecund and sterile eggs for spots |
October 30, 1679 |
cousin Pieter Abrahams Hogenhouck buried |
November 1, 1679 |
Philosophical Collections number 1 published in London, including Leeuwenhoek's Letter 28 of 1679-04-25 (AB 43) to Nehemiah Grew |
November 14, 1679 |
Wrote Letter L-095 of 1679-11-14 to Lambert van Velthuysen about gout, salt, and drinking tea |
November 20, 1679 |
Wrote Letter L-096 of 1679-11-20 to Robert Hooke, copying his Letter L-095 of 14 November 1679 about gout, salt, and drinking tea |