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 27 of 1679-02-21 (AB 42) 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 to Leeuwenhoek about some of his observations |
April 25, 1679 |
Wrote Letter 28 of 1679-04-25 (AB 43) 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 of 1679-04-27 (AB 44) to Constantijn Huygens |
May 1, 1679 |
Visited by James, Duke of York, and "several high personages" |
May 4, 1679 |
mentor Constantijn Huygens called Leeuwenhoek the "magician of Delft" |
May 11, 1679 |
Wrote letter of 1679-05-11 (AB 45) to Lambert van Velthuysen |
May 15, 1679 |
Wrote letter of 1679-05-15 (AB 46) to Christiaan Huygens |
May 20, 1679 |
Wrote letter of 1679-05-20 (AB 47) to Constantijn Huygens |
June 13, 1679 |
Wrote letter of 1679-06-13 (AB 48) to Nehemiah Grew |
June 13, 1679 |
Wrote letter of 1679-06-13 (AB 49) to Lambert van Velthuysen |
July 11, 1679 |
Wrote letter of 1679-07-11 (AB 50) to Lambert van Velthuysen |
July 20, 1679 |
Robert Hooke read his translation of Letter 28 of 1679-04-25 to Nehemiah Grew |
July 27, 1679 |
Robert Hooke showed the Royal Society microscopical observations of the liquor in a ram's testicles |
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 of 1679-10-13 (AB 51) to Robert Hooke |
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 of 1679-11-14 (AB 52) to Lambert van Velthuysen about gout, salt, and drinking tea |
November 20, 1679 |
Wrote letter of 1679-11-20 (AB 53) to Robert Hooke, copying his letter of 14 November 1679 to Velthuysen about gout, salt, and drinking tea |
January 12, 1680 |
Wrote Letter 29 of 1680-01-12 (AB 54) to Robert Hooke about the structure of wood and sperm in fish |
January 16, 1680 |
Wrote letter of 1680-01-16 (AB 55) to Robert Hooke, enclosing a copy of the letter of 1679-05-20 to Constantijn Huygens about the number and size of little animals |
January 25, 1680 |
Robert Hooke read part of Letter 29 of 1680-01-12 about the structure of wood |
February 1, 1680 |
Robert Hooke read copy of letter to Huygens of 1679-05-20 about the number and size of little animals in ginger water |
February 2, 1680 |
Robert Hooke inquired whether Leeuwenhoek would accept election to the Royal Society |
February 7, 1680 |
microscopist Jan Swammerdam died |
February 8, 1680 |
Elected a member by the Royal Society |
February 13, 1680 |
Wrote letter of 1680-02-13 (AB 56) to Robert Hooke that being elected a member of the Royal Society would be an honour |
February 18, 1680 |
cousin Margaretha (Grietjen) Huijchs Leeuwenhoek married Gijsbert Pieterse Cruijt |
February 22, 1680 |
Thomas Gale authorized by the Royal Society to send diploma with seal to Leeuwenhoek |
February 29, 1680 |
The Royal Society ordered that its coat of arms be engraved on the silver box holding Leeuwenhoek's diploma |
March 4, 1680 |
The Royal Society discussed a silver box for Leeuwenhoek's diploma |
March 7, 1680 |
The Royal Society further discussed Leeuwenhoek's diploma |
March 8, 1680 |
Thomas Gale sent Leeuwenhoek official notice of his election as member of the Royal Society |
March 21, 1680 |
Royal Society postponed reading copy of letter of 1679-05-20 to Huygens |
March 28, 1680 |
Royal Society again postponed reading copy of letter of 1679-05-20 to Huygens |
April 5, 1680 |
Wrote Letter 30 of 1680-04-05 (AB 57) to Robert Hooke about the testicles and sperm of a rat and organisms in the gills of oysters and in the sap of vines |
April 11, 1680 |
Robert Hooke read Letter 30 of 1680-04-05 about rat sperm and organisms in gills of oysters and sap of vines |
April 22, 1680 |
Robert Hooke sent Leeuwenhoek official notice of his election as member of the Royal Society |
May 13, 1680 |
Wrote letter of 1680-05-13 (AB 59) to Robert Hooke to gratefully accept his election as a foreign member of the Royal Society and to acknowledge the receipt of his diploma |
May 13, 1680 |
Wrote Letter 31 of 1680-05-13 (AB 60) to Thomas Gale about little animals in sap and whether little animals are in the air |
May 13, 1680 |
Wrote letter of 1680-05-13 (AB 58) to Members of the Royal Society expressing his surprise and gratitude at being elected a member |
May 23, 1680 |
Robert Hooke read the letters of 1680-05-13 thanking the Royal Society |
June 14, 1680 |
Wrote letter of 1680-06-14 (AB 61) to Robert Hooke, a short cover letter |
June 14, 1680 |
Wrote Letter 32 of 1680-06-14 (AB 62) to Thomas Gale about beer, yeast, crab's eyes in vinegar, and little animals reproducing in hermetically-sealed tubes |
June 20, 1680 |
Robert Hooke produced the two letters of 1680-06-14 from Leeuwenhoek |
June 27, 1680 |
The Royal Society read Letter 32 of 1680-06-14 to Thomas Gale about beer, yeast, a little animals in hermetically sealed tubes |
August 9, 1680 |
Wrote letter of 1680-08-09 (AB 63) to Robert Hooke to ask whether the Royal Society received previous letters and to promise further investigations into the formation of blood |
August 13, 1680 |
Constantijn Huygens, jr., called Leeuwenhoek "the great man of the century" |
September 28, 1680 |
Wrote letter of 1680-09-28 (AB 64) to Thomas Gale to inquire whether his letter of 1680-06-14 to Hooke had arrived |
November 12, 1680 |
Wrote Letter 33 of 1680-11-12 (AB 65) to Robert Hooke about blood globules, lees of wine, globules in rain water, milk vessels, reproduction, little animals in the male seed of animals, and their incomprehensible smallness |
November 21, 1680 |
Robert Hooke read the headings of Letter 33 of 1680-11-12 (AB 65) |
December 5, 1680 |
Francis Aston promised the Royal Society to translate Letter 32 of 1680-11-12 (AB 65) to Hooke into English |
January 1, 1681 |
Sat for Cornelis de Man's Anatomy Lesson of Dr. 's Gravezande |
January 8, 1681 |
Appointed curator of the abandoned estate of Willemtie Pieters Touw |
January 22, 1681 |
The Royal Society read Francis Aston's translation of Letter 32 of 1680-11-12 (AB 65) to Hooke about the lees of ale and wine |
April 29, 1681 |
cousin Jannitgen Huijchs Leeuwenhoek buried |
June 8, 1681 |
cousin Maria Maertens Leeuwenhoek married Jan den Appel |
June 17, 1681 |
co-worker Daniel Bogaert buried |
August 9, 1681 |
nephew Anthonij Jans de Molijn married Magdalena van Poelgeest |
November 4, 1681 |
Wrote Letter 34 of 1681-11-04 (AB 66) to Robert Hooke about hog bristles, shedding hair, blackheads; living little animals in excrement, horse urine, clay, and gout |
November 12, 1681 |
Robert Hooke produced the letter of 1681-11-04 from Leeuwenhoek |
November 19, 1681 |
Robert Hooke read Letter 34 of 1681-11-04 |
November 26, 1681 |
Members of the Royal Society discussed Leeuwenhoek's observations of hair |
December 3, 1681 |
Members of the Royal Society discussed Leeuwenhoek's microscopes |
December 10, 1681 |
Philosophical Collections number 3 published in London, including Leeuwenhoek's Letter 33 of 1680-11-12 (AB 65) to Robert Hooke |
January 1, 1682 |
Visited by Cornelis Bontekoe |
January 10, 1682 |
Philosophical Collections number 4 published in London, including Leeuwenhoek's Letter 34 of 1681-11-04 (AB 66) to Robert Hooke |
January 28, 1682 |
Received fees from new citizens in the name of the city's camerbewaarders and messengers |
February 1, 1682 |
Philosophical Collections number 5 published in London, including Leeuwenhoek's Letter 35 of 1682-03-03 (AB 67) to Robert Hooke |
March 3, 1682 |
Wrote Letter 35 of 1682-03-03 (AB 67) to Robert Hooke about muscle fibres, hair, the cell nucleus in the erythrocytes of fishes, the liver of salmons, beards of oysters, and the structure and growth of oyster shell |
March 11, 1682 |
Robert Hooke read the first part of Letter 35 of 1682-03-03 to himself about striated muscle fibres of mammals and fishes |
March 16, 1682 |
Robert Hooke wrote to Leeuwenhoek that his observations of shellfish muscles were well received by the Royal Society and concurred with his own |
March 18, 1682 |
Robert Hooke read part of Letter 35 of 1682-03-03 to himself about muscle fibers |
March 20, 1682 |
Robert Hooke wrote to Leeuwenhoek that his observations were well received by the Royal Society |
April 1, 1682 |
Philosophical Collections number 7 published in London, including Leeuwenhoek's Letter 36 of 1682-04-04 (AB 68) to Robert Hooke |
April 4, 1682 |
Wrote Letter 36 of 1682-04-04 (AB 68) to Robert Hooke |
April 15, 1682 |
Robert Hooke read his letter of 1682-03-10 and Leeuwenhoek's reply of 1682-04-04 about muscles of crabs, lobsters, and shrimp |
April 22, 1682 |
Robert Hooke showed the Royal Society part of a flesh muscle in a microscope, but the rimples mentioned by Leeuwenhoek could not be seen |
July 28, 1682 |
Wrote letter of 1682-07-28 (AB 69) to Robert Hooke |
November 19, 1682 |
Sold two bonds from the property of Willem Bolnes to help pay Catherina Bolnes' creditors |
January 1, 1683 |
Visited by Marie-Anne Mancini, Duchess of Bouillon and others |
January 22, 1683 |
Wrote Letter 37 of 1683-01-22 (AB 70) to Christopher Wren about the function of the ovary, muscles of insects, drinking tea and mild beer, erythrocytes, and a theory on the formation of blood |
February 8, 1683 |
Received assistant wine gauger for emergencies |
February 16, 1683 |
Francis Aston wrote to Leeuwenhoek; invited him to investigate colors |
February 17, 1683 |
The Royal Society read Letter 37 of 1683-01-22 to Christopher Wren |
March 17, 1683 |
Francis Aston wrote to Leeuwenhoek about new Royal Society officers |
May 20, 1683 |
Wrote letter of 1683-05-20 (AB 71) to Anthonie Heinsius |
July 16, 1683 |
Wrote Letter 38 of 1683-07-16 (AB 72) to Christopher Wren |
July 22, 1683 |
Wrote letter of 1683-07-22 (AB 73) to Anthonie Heinsius |
July 28, 1683 |
The Royal Society read Letter 38 of 1683-07-16 (AB 72) to Christopher Wren |
August 4, 1683 |
The Royal Society discussed Letter 38 of 1683-07-16 (AB 72) to Christopher Wren about the male seed in egg yolks |
September 2, 1683 |
Wrote letter of 1683-09-02 (AB 74) to Anthonie Heinsius |
September 10, 1683 |
Anthonie Heinsius wrote to Leeuwenhoek about recent observations of generation |
September 16, 1683 |
Wrote letter of 1683-09-16 (AB 75) to Anthonie Heinsius |
September 17, 1683 |
Wrote Letter 39 of 1683-09-17 (AB 76) to Francis Aston about saliva and bacteria in tartar, nasal hairs and blackheads, skin, fish scales, pores, and calluses |
September 30, 1683 |
Wrote letter of 1683-09-30 (AB 77) to Anthonie Heinsius |
October 1, 1683 |
Francis Aston wrote to Leeuwenhoek about the translation of a Dutch phrase |
October 14, 1683 |
Wrote letter of 1683-10-14 (AB 78) to Anthonie Heinsius |
November 3, 1683 |
The Royal Society read and discussed Letter 39 of 1683-09-17 to Francis Aston |
November 10, 1683 |
The Royal Society discussed Leeuwenhoek's observations about pores in the skin |
December 28, 1683 |
Wrote Letter 40 of 1683-12-28 (AB 79) to Francis Aston |
January 1, 1684 |
Published Schobbens in de Mond (Scales in the Mouth), Letter 40 |
January 1, 1684 |
Published Eyerstok (Ovary), Letters 37, 39 |
January 1, 1684 |
Published Eyerstok (Ovary), Letter 37 |
January 1, 1684 |
Published Humor Cristallinus (Crystalline Humor), Letter 41 |
January 1, 1684 |
Daniel Gaesbeeck wrote to Leeuwenhoek about why he was publishing his letters |
January 1, 1684 |
Published Onsigtbare Geschapene Waarheden (Invisible Creation Truths), Letters 32, 33 |
January 1, 1684 |
Published Onsigtbare Geschapene Waarheden (Invisible Creation Truths), Letters 32, 39 |
January 1, 1684 |
Published Onsigtbare Geschapene Waarheden (Invisible Creation Truths), Letters 32, 33, 39 |
January 6, 1684 |
Authorized as curator to inspect estate of Willemtie Pieters Touw by her heir |
February 23, 1684 |
The Royal Society read Letter 40 of 1683-12-28 to Francis Aston |
February 26, 1684 |
Francis Aston wrote to Leeuwenhoek about the importance of his work |
April 2, 1684 |
cousin Margrieta Maertens Leeuwenhoek married Michiel Reijniers van Hasseld |
April 14, 1684 |
Wrote Letter 41 of 1684-04-14 (AB 80) to Francis Aston about lenses and corneas, the function of eye-lids, the involuntariness of blinking, the optic nerve, and the skin of Moors |
May 24, 1684 |
The Royal Society read first part of Letter 41 of 1684-04-14 to Francis Aston the crystalline humour of the eye |
May 26, 1684 |
William Molyneux demonstrated blood flow in a newt |
May 31, 1684 |
The Royal Society discussed Leeuwenhoek's observations about the crystalline humour of the eye |
June 14, 1684 |
The Royal Society read the latter part of Letter 41 of 1684-04-14 to Francis Aston |
June 15, 1684 |
Visited Christiaan Huygens in Den Haag with the Durven brothers |
July 25, 1684 |
Wrote Letter 42 of 1684-07-25 (AB 81) to Members of the Royal Society about parts of the brain of several animals, chalk stones of gout, leprosy, and the scales of eels |
July 27, 1684 |
Christiaan Huygens gossiped about Maria Duyst in a letter to his brother Constantijn Huygens |
December 13, 1684 |
sister Catharina Philips Leeuwenhoek received legacy from great uncle Johan Sebastiaans van den Berch |
December 13, 1684 |
The Royal Society read the first part of Letter 42 of 1684-07-25 to Members of the Royal Society |
December 20, 1684 |
cousin Geertruijt Huijchs Leeuwenhoek buried |
January 1, 1685 |
Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 |
January 1, 1685 |
Published Zaden van Boomen (Seeds of Trees), Letters 46, 47 |
January 1, 1685 |
Published Sout-figuren (Salt figures), Letters 44, 45 |
January 1, 1685 |
Published Anatomia et Contemplatio (Anatomy and Contemplation), Letters 43, 42, 38 |
January 1, 1685 |
cousin Maerten Huijchs Leeuwenhoek appointed tax farmer |
January 5, 1685 |
Wrote Letter 43 of 1685-01-05 (AB 82) to Members of the Royal Society |
January 17, 1685 |
The Royal Society read the latter part of Letter 42 of 1684-07-25 |
January 23, 1685 |
Wrote Letter 44 of 1685-01-23 (AB 83) to Members of the Royal Society |