Chronology of events: 1694--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
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
June 28, 1695 Visited by Johann Wilhelm von Pfalz-Neuburg, Elector Palatine, his wife and his mother
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 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
January 1, 1696 Published Antony van Leeuwenhoeks 37ste Missive, Geschreven aan (Written to) de Heer Cristopher Wren
February 20, 1696 Wrote Letter 98 of 1696-02-20 (AB 164) to Frederik Adriaan van Reede van Renswoude
March 6, 1696 Antonio Magliabechi wrote to Leeuwenhoek, a letter "full of signs of extraordinary benevolence"
March 8, 1696 Wrote Letter 99 of 1696-03-08 (AB 165) to Nicolaas Witsen
May 16, 1696 Pieter Rabus wrote to Leeuwenhoek about dowsing rods
June 1, 1696 Wrote letter of 1696-06-01 (AB 166) to Pieter Rabus
June 5, 1696 Antonio Magliabechi wrote to Leeuwenhoek about the book dedicated to him
June 9, 1696 Asked to keep safe disputed sacks of buckwheat while the magistrates heard the case
June 27, 1696 Named as renter of a garden outside the Schoolpoort
July 6, 1696 Wrote Letter 100 of 1696-07-06 (AB 167) to Nicolaas Witsen
July 8, 1696 Antonio Magliabechi wrote to Leeuwenhoek about a packet of books that had arrived
July 10, 1696 Wrote Letter 102 of 1696-07-10 (AB 169) to Members of the Royal Society
July 10, 1696 Wrote Letter 101 of 1696-07-10 (AB 168) to Nicolaas Witsen
July 16, 1696 Wrote Letter 103 of 1696-07-16 (AB 170) to Frederik Adriaan van Reede van Renswoude
July 23, 1696 Wrote letter of 1696-07-23 (AB 171) to Pieter Rabus
July 30, 1696 Pieter Rabus wrote to Leeuwenhoek more about dowsing rods
August 26, 1696 Wrote Letter 104 of 1696-08-26 (AB 172) to Frederik Adriaan van Reede van Renswoude
August 28, 1696 Wrote letter of 1696-08-28 (AB 173) to Antonio Magliabechi
August 29, 1696 Wrote Letter 105 of 1696-08-29 (AB 174) to Hendrik van Bleyswijk
September 7, 1696 Wrote letter of 1696-09-07 (AB 175) to Antonio Magliabechi
September 12, 1696 Wrote Letter 106 of 1696-09-12 (AB 176) to Anthonie Heinsius
September 27, 1696 Wrote Letter 107 of 1696-09-27 (AB 177) to Hendrik van Bleyswijk
October 26, 1696 Wrote letter of 1696-10-26 (AB 178) to Maarten Etienne van Velden
October 30, 1696 Wrote letter of 1696-10-30 (AB 179) to N.N.
November 1, 1696 Wrote letter of 1696-11-01 (AB 180) to Harmen van Zoelen
November 6, 1696 Received an honorarium from the city for the Sixth Continuation of the Letters
January 1, 1697 Published Sesde Vervolg der Brieven (Sixth Continuation of the Letters), Letters 97 - 107
January 1, 1697 Published Zaden van Boomen (Seeds of Trees), Letters 46, 47 (2nd)
January 1, 1697 Published Tweede Vervolg der Brieven (Second Continuation of the Letters), Letters 61 - 67 (2nd)
January 1, 1697 Published Continuatio Arcanorum Naturae detectorum (Continuation of Nature's Mysteries Disclosed), Letters 93 - 107
January 1, 1697 Received fees from new citizens in the name of the city's camerbewaarders and messengers
February 12, 1697 Wrote letter of 1697-02-12 (AB 181) to Maarten Etienne van Velden
February 19, 1697 Wrote letter of 1697-02-19 (AB 182) to Hans Sloane
March 25, 1697 Wrote letter of 1697-03-25 (AB 183) to Members of the Royal Society
April 1, 1697 Visited by Johann Anderson
April 5, 1697 Wrote Letter 108 of 1697-04-05 (AB 184) to Members of the Royal Society
June 1, 1697 Visited by Sir Francis Child
June 6, 1697 Wrote letter of 1697-06-06 (AB 185) to Antonio Magliabechi
July 1, 1697 Wrote letter of 1697-07-01 (AB 186) to Luca Giamberti
July 19, 1697 Luca Giamberti wrote to Leeuwenhoek about a gift book from Magliabechi
September 3, 1697 Wrote Letter 109 of 1697-09-03 (AB 187) to Jan van Leeuwen
September 3, 1697 Visited neice Rijcke van Leeuwen in Rotterdam
September 10, 1697 Wrote Letter 110 of 1697-09-10 (AB 188) to Members of the Royal Society
October 12, 1697 cousin Jannetje Maertens (Johanna) Leeuwenhoek married Frans van Trigt
October 15, 1697 Visited by Tsar Peter the Great of Russia
November 2, 1697 Wrote letter of 1697-11-02 (AB 189) to Antonio Magliabechi
December 1, 1697 Wrote letter of 1697-12-01 (AB 190) to Johan Arnoldi
December 10, 1697 aunt Anna Verloo left coins to Maria Thonis and her cousin Magdaleentje
January 1, 1698 Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 (3rd)
January 1, 1698 Published A. van Leeuwenhoeks 41ste Missive, Geschreven aen (written to) de Koninklijke Societeit tot Londen
January 15, 1698 Johan Arnoldi wrote to Leeuwenhoek about problems delivering Magliabechi's gift book
February 20, 1698 Wrote letter of 1698-02-20 (AB 191) to Antonio Magliabechi
March 21, 1698 Govert Bidloo wrote to Leeuwenhoek about little animals in sheep's livers
April 17, 1698 Wrote letter of 1698-04-17 (AB 192) to Antonio Magliabechi
May 9, 1698 Wrote Letter 111 of 1698-05-09 (AB 193) to Members of the Royal Society
July 1, 1698 Traveled to Antwerp.
July 5, 1698 Appointed curator of the insolvent estate of Hendrick van Tol
August 14, 1698 Wrote letter of 1698-08-14 (AB 194) to Antonio Magliabechi
September 20, 1698 Wrote Letter 112 of 1698-09-20 (AB 195) to Anthonie Heinsius
December 17, 1698 Wrote Letter 113 of 1698-12-17 (AB 196) to Harmen van Zoelen
February 1, 1699 Wrote Letter 114 of 1699-02-01 (AB 197) to N.N.
February 28, 1699 Wrote letter of 1699-02-28 (AB 198) to Antonio Magliabechi
March 29, 1699 At Leeuwenhoek's request, the mayors relieved him of his duties as camerbewaarder, appointed Arnold Ramp in his place, and appointed Christiaen Drom to replace Ramp as travelling messsenger
April 26, 1699 Wrote Letter 115 of 1699-04-26 (AB 199) to Harmen van Zoelen
June 9, 1699 Wrote Letter 116 of 1699-06-09 (AB 200) to Members of the Royal Society
June 23, 1699 Wrote Letter 117 of 1699-06-23 (AB 201) to Members of the Royal Society
August 5, 1699 Wrote Letter 118 of 1699-08-05 (AB 202) to N.N.
September 25, 1699 Wrote Letter 119 of 1699-09-25 (AB 204) to Members of the Royal Society
September 25, 1699 Wrote letter of 1699-09-01 (AB 203) to Hans Sloane
October 1, 1699 Wrote Letter 120 of 1699-10-01 (AB 205) to Ehrenfried Walther von Tschirnhaus
October 16, 1699 Wrote Letter 121 of 1699-10-16 (AB 206) to Antonio Magliabechi
December 1, 1699 Received payment from city for duties with magistrate's court
December 12, 1699 City set salaries for camerbewaarders serving as inspectors
January 1, 1700 Visited by Hans Sloane, his editor at Philosophical Transactions
January 2, 1700 Wrote Letter 122 of 1700-01-02 (AB 207) to Hans Sloane
January 14, 1700 Wrote Letter 123 of 1700-01-14 (AB 208) to Nicolaes Boogaert van Belois
May 20, 1700 Wrote Letter 124 of 1700-05-20 (AB 209) to Hendrik van Bleyswijk
May 20, 1700 Wrote Letter 126 of 1700-05-20 (AB 210) to Anthonie Heinsius
May 28, 1700 Hans Sloane wrote to Leeuwenhoek about translation problems and parasitic worms
June 2, 1700 Wrote Letter 125 of 1700-06-02 (AB 211) to Frederik Adriaan van Reede van Renswoude
June 14, 1700 Wrote Letter 127 of 1700-06-14 (AB 212) to Hans Sloane

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