Chronology of events: 1673--1702

For some events, the year is certain but the month and day are not. Example: We know only the year for the collections of Leeuwenhoek's letters published in Dutch during his lifetime.

For other events, the season or month are certain but the day is not. Example: Leeuwenhoek mentions that someone visited him "last month".

On the other hand, many events did indeed happen on the first day of a month. Example: public appointments to Delft's city offices took effect on January 1 of each year. Thus:

  • A date of January 1 in a given year may indicate that the year is certain but the month and day are not.
  • A date of 1 in a given month may indicate that the year and month are certain but the day is not.

Unless otherwise indicated, for events in England, the date given is Old Style, 10 days behind the Dutch Republic's New Style until 1700 and then 11 days behind.

Date
April 4, 1687 Wrote Letter 53 of 1687-04-04 (AB 98) to Members of the Royal Society
April 5, 1687 Guarantor for Johan Francisco de Raet when he became a citizen of Delft
May 9, 1687 Wrote Letter 54 of 1687-05-09 (AB 99) to Members of the Royal Society
June 11, 1687 cousin Adriaen Lambrechts Leeuwenhoek admitted as notary
June 13, 1687 Wrote Letter 55 of 1687-06-13 (AB 100) to Members of the Royal Society
July 11, 1687 Wrote Letter 56 of 1687-07-11 (AB 101) to Members of the Royal Society
August 6, 1687 Wrote Letter 57 of 1687-08-06 (AB 102) to Members of the Royal Society
September 9, 1687 Wrote Letter 58 of 1687-09-09 (AB 103) to Members of the Royal Society
October 7, 1687 Appointed curator of the insolvent estate of Evert van der Sijde
October 17, 1687 Wrote Letter 59 of 1687-10-17 (AB 104) to Members of the Royal Society
November 24, 1687 nephew Johannes Adriaans Swalmius married Magdelena van Mierop
November 28, 1687 Wrote Letter 60 of 1687-11-28 (AB 105) to Members of the Royal Society
January 1, 1688 Published Vervolg der Brieven (Continuation of the Letters), Letters 53 - 60 (2nd)
April 2, 1688 printer-bookseller Hendrik van Cronevelt bought the house next door
May 25, 1688 Wrote Letter 61 of 1688-05-25 (AB 106) to Members of the Royal Society
July 6, 1688 Wrote Letter 62 of 1688-07-06 (AB 107) to Members of the Royal Society
August 3, 1688 Wrote Letter 63 of 1688-08-03 (AB 108) to Members of the Royal Society
August 24, 1688 Wrote Letter 64 of 1688-08-24 (AB 109) to Members of the Royal Society
September 7, 1688 Wrote Letter 65 of 1688-09-07 (AB 110) to Members of the Royal Society
September 23, 1688 Wrote letter of 1688-09-23 (AB 111) to Melchisedec Thevenot
November 1, 1688 Published Den Waaragtigen Omloop des Bloeds (On the True Circulation of Blood), Letter 65
January 1, 1689 Published Tweede Vervolg der Brieven (Second Continuation of the Letters), Letters 61 - 67
January 1, 1689 Published Continuatio Epistolarum (Continuation of the Letters), Letters 53-60
January 12, 1689 Wrote Letter 66 of 1689-01-12 (AB 113) to Members of the Royal Society
January 12, 1689 Wrote letter of 1689-01-12 (AB 112) to Robert Boyle
March 6, 1689 Christiaan Huygens wrote to Leeuwenhoek about other places to see the circulation of blood
April 1, 1689 Did not write any letters between 1689 04-01 and 1691 09-18
April 1, 1689 Wrote Letter 67 of 1689-04-01 (AB 114) to Members of the Royal Society
April 13, 1689 Appointed guardian of the children of Jacob Bellart
May 27, 1689 Anthonie Heinsius became Grand Pensionary of the States of Holland
June 21, 1689 nephew Adriaan Johannes Swalmius baptized, witnessed by Antony and Cornelia
October 19, 1689 cousin Adriaen Lambrechts Leeuwenhoek married Eva Jacobs Overschie
March 6, 1690 Christiaan Huygens wrote to Leeuwenhoek about liquids in glass balls and Iceland crystal
April 3, 1690 cousin Maarten Lambrechts Leeuwenhoek married Margareta Pieters van Limburg
April 17, 1690 daughter Maria made a will
September 7, 1690 Bought the other part of the garden outside the walls of the city
January 1, 1691 Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 (2nd)
March 2, 1691 Gottfried Leibniz wrote to Christiaan Huygens praising Leeuwenhoek
September 11, 1691 William Stanley wrote to Leeuwenhoek that the members of the Royal Society "wish their services to be presented to me"
September 18, 1691 Wrote letter of 1691-09-18 (AB 115) to Antonio Magliabechi
November 27, 1691 Wrote Letter 68 of 1691-11-27 (AB 116) to Members of the Royal Society
December 2, 1691 mentor Cornelis 's Gravesande died
December 5, 1691 mentor Cornelis 's Gravesande buried
December 6, 1691 brother-in-law Jan Jacobs de Molijn buried
January 4, 1692 Wrote Letter 69 of 1692-01-04 (AB 117) to Members of the Royal Society
January 13, 1692 niece Geertruijt Jans de Molijn inherited property from her father Jan Jacobs
February 1, 1692 Wrote Letter 70 of 1692-02-01 (AB 118) to Members of the Royal Society
February 1, 1692 Robert Hooke called Leeuwenhoek the microscope's "single votary"
February 2, 1692 Richard Waller wrote to Leeuwenhoek about his recent observations and the structure of grass
March 7, 1692 Wrote Letter 71 of 1692-03-07 (AB 119) to Members of the Royal Society
March 19, 1692 Reimbursed for purchase of distilled water and wine
April 22, 1692 Wrote Letter 72 of 1692-04-22 (AB 120) to Richard Waller
June 24, 1692 Wrote Letter 73 of 1692-06-24 (AB 121) to Members of the Royal Society
August 12, 1692 Wrote Letter 74 of 1692-08-12 (AB 122) to Members of the Royal Society
September 16, 1692 Wrote Letter 75 of 1692-09-16 (AB 123) to Members of the Royal Society
September 23, 1692 Wrote letter of 1692-09-23 (AB 124) to Mary, Queen of Great Britain
October 20, 1692 Christiaan Huygens wrote to Leeuwenhoek about spontaneous generation and praised his work and diligence
November 29, 1692 cousin Sara Maertens Leeuwenhoek married Cornelis Luda
December 21, 1692 cousin Jacob Adriaens Leeuwenhoek (1692-1724) baptized
January 1, 1693 editor Richard Waller began publishing Leeuwenhoek again
March 25, 1693 Published Derde Vervolg der Brieven (Third Continuation of the Letters), Letters 68 - 75
April 4, 1693 Received an honorarium from the city for his books of letters
April 28, 1693 Richard Waller wrote to Leeuwenhoek about colors of feathers and univocal generation
May 23, 1693 De la Croze called Leeuwenhoek a "curious Observer of Nature"
July 1, 1693 Wrote letter of 1693-07-01 (AB 125) to Richard Waller
August 18, 1693 Pieter Rabus wrote to Leeuwenhoek praising his accomplishments and including a laudatory poem
August 24, 1693 George Garden wrote to Leeuwenhoek about the role of egg and ovaries in reproduction
September 18, 1693 Paul Durven appointed curator
September 26, 1693 cousin Sara Maertens Leeuwenhoek buried
October 15, 1693 Wrote Letter 76 of 1693-10-15 (AB 126) to Members of the Royal Society
October 27, 1693 Wrote letter of 1693-10-27 (AB 127) to Pieter Rabus
November 19, 1693 nephew Johannes Adriaans Swalmius buried
November 21, 1693 Appointed guardian of his dying wife Cornelia Swalmius
November 30, 1693 Hans Sloane was elected Secretary of the Royal Society and editor of Philosophical Transactions. He published 68 articles by Leeuwenhoek over the next twenty years.
December 5, 1693 Rented St. Agnieten Tooren from the city for 12 years
December 7, 1693 wife Cornelia Swalmius made a will
December 8, 1693 Wrote letter of 1693-12-08 (AB 128) to Richard Waller
December 20, 1693 Wrote Letter 77 of 1693-12-20 (AB 129) to Members of the Royal Society
December 26, 1693 wife Cornelia Swalmius made a will including Maria
December 29, 1693 Sold the garden outside the walls of the city
December 31, 1693 Promised to pay five gulden for the ransom of a neighbor's son
January 1, 1694 Published Onsigbare Geschapene Waarheden (Invisible Creation Truths), Letters 32, 39, 33
January 1, 1694 Published Vierde Vervolg der Brieven (Fourth Continuation of the Letters), Letters 76 - 83
January 6, 1694 wife Cornelia Johannes Swalmius buried
January 19, 1694 Wrote letter of 1694-01-19 (AB 130) to Richard Waller
January 24, 1694 Wrote Letter 78 of 1694-01-24 (AB 131) to Members of the Royal Society
January 31, 1694 Richard Waller wrote to Leeuwenhoek about colors and sperm inside of eggs
February 12, 1694 Wrote letter of 1694-02-12 (AB 132) to Richard Waller
February 12, 1694 Presented act of guardianship to the Weeskamer after Cornelia's death
February 24, 1694 Wrote Letter 79 of 1694-02-24 (AB 133) to Members of the Royal Society
February 28, 1694 Benedictus Haan wrote to Leeuwenhoek agreeing with him against George Garden about the female ovary
March 2, 1694 Wrote Letter 80 of 1694-03-02 (AB 134) to Members of the Royal Society
March 2, 1694 Presented Cornelia's will to the Weeskamer
March 19, 1694 Wrote Letter 81 of 1694-03-19 (AB 135) to Members of the Royal Society
April 2, 1694 Wrote Letter 82 of 1694-04-02 (AB 136) to Members of the Royal Society
April 30, 1694 Wrote Letter 83 of 1694-04-30 (AB 137) to Members of the Royal Society
May 11, 1694 Received an honorarium from the city for the Fourth Continuation of the Letters
May 26, 1694 Wrote letter of 1694-05-26 (AB 138) to Richard Waller
June 4, 1694 Visited Pieter Rabus in Rotterdam
July 30, 1694 Arnold Ramp appointed tax collector for livestock sales
September 14, 1694 Wrote Letter 84 of 1694-09-14 (AB 139) to Richard Waller
November 3, 1694 Lent 400 guilders to Leendert van Bijstervelt
November 24, 1694 cousin Maerten Huijchs Leeuwenhoek buried
November 29, 1694 microscopist Marcello Malpighi died
November 30, 1694 Wrote Letter 85 of 1694-11-30 (AB 140) to Pieter Rabus
January 1, 1695 Published Arcana Naturae Detecta (Nature's Mysteries Disclosed), Letters 32, 33, 37, 39 - 41, 61 - 92
January 1, 1695 Published Register van alle de Werken, Letters 28 - 83
April 10, 1695 Wrote Letter 86 of 1695-04-10 (AB 141) to Anthonie Heinsius
April 22, 1695 Wrote Letter 87 of 1695-04-22 (AB 142) to Frederik Adriaan van Reede van Renswoude
April 30, 1695 Bought bonds and annuities from the city of Delft
May 1, 1695 Wrote Letter 88 of 1695-05-01 (AB 143) to Anthonie Heinsius
May 18, 1695 Wrote Letter 89 of 1695-05-18 (AB 144) to Frederik Adriaan van Reede van Renswoude
May 21, 1695 Wrote letter of 1695-05-21 (AB 145) to Pieter Rabus
May 23, 1695 Wrote letter of 1695-05-23 (AB 146) to Maarten Etienne van Velden
July 8, 1695 Christiaan Huygens died
July 10, 1695 Wrote Letter 90 of 1695-07-10 (AB 147) to Frederik Adriaan van Reede van Renswoude
July 12, 1695 Wrote letter of 1695-07-12 (AB 148) to Maarten Etienne van Velden
July 20, 1695 Wrote Letter 91 of 1695-07-20 (AB 149) to Anthonie Heinsius
July 21, 1695 Wrote letter of 1695-07-21 (AB 150) to Pieter Rabus
August 1, 1695 Wrote letter of 1695-08-01 (AB 152) to Antonio Magliabechi
August 1, 1695 Visited by Johann Wilhelm von Pfalz-Neuburg, Elector Palatine, his wife and his mother
August 15, 1695 Wrote Letter 92 of 1695-08-15 (AB 151) to Frederik Adriaan van Reede van Renswoude
August 16, 1695 Wrote letter of 1695-08-16 (AB 153) to Antonio Magliabechi
August 18, 1695 Wrote Letter 93 of 1695-08-18 (AB 154) to Anthonie Heinsius
August 20, 1695 Wrote Letter 94 of 1695-08-20 (AB 155) to Frederik Adriaan van Reede van Renswoude
September 10, 1695 Wrote letter of 1695-09-10 (AB 156) to Pieter Rabus
September 18, 1695 Wrote Letter 95 of 1695-09-18 (AB 157) to Johann Wilhelm von Pfalz-Neuburg
October 18, 1695 Wrote letter of 1695-10-18 (AB 158) to Antonio Magliabechi
October 31, 1695 Wrote letter of 1695-10-31 (AB 159) to Antonio Magliabechi
November 3, 1695 Wrote Letter 96 of 1695-11-03 (AB 160) to Johann Wilhelm von Pfalz-Neuburg
December 1, 1695 Wrote letter of 1695-12-01 (AB 161) to Frederik Adriaan van Reede van Renswoude
December 14, 1695 Received an honorarium from the city for the Fifth Continuation of the Letters
December 22, 1695 Wrote letter of 1695-12-22 (AB 162) to Antonio Magliabechi
December 28, 1695 Wrote Letter 97 of 1695-12-28 (AB 163) to Hendrik van Bleyswijk
January 1, 1696 Published Sout-figuren (Salt figures), Letters 44, 45 (2nd)
January 1, 1696 Published Levende Dierkens (Living Animals), Letters 28 - 31, 34 - 36 (2nd)
January 1, 1696 Published Continuatio Epistolarum (Continuation of the Letters), Letters 53-60 (2nd)
January 1, 1696 Published Arcana Naturae Microscopiorum (Nature's Mcroscopical Mysteries), 19 Letters from 28 - 52 (2nd)
January 1, 1696 Published Vijfde Vervolg der Brieven (Fifth Continuation of the Letters), Letters 84 - 96
January 1, 1696 Published Antony van Leeuwenhoeks 40ste Missive, Geschreven aan (Written to) de Heer Francois Aston

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