April 1, 1673 |
cousin Magdaleentje (Helena) Maertens Leeuwenhoek (1653-1720) married Johannes de Coep |
April 28, 1673 |
Wrote Letter 1 of 1673-04-28 (AB 1) to Henry Oldenburg |
May 7, 1673 |
The Royal Society received Leeuwenhoek's first letter |
May 19, 1673 |
At age 40, first letter published in Philosophical Transactions |
May 25, 1673 |
Henry Oldenburg wrote to Reinier de Graaf about the Royal Society's reception of Leeuwenhoek's first letter |
August 8, 1673 |
mentor Constantijn Huygens wrote to Robert Hooke about Leeuwenhoek as "exceedingly curious and industrious" |
August 15, 1673 |
Wrote Letter 2 of 1673-08-15 (AB 2) to Henry Oldenburg |
August 21, 1673 |
mentor Reinier de Graaf buried |
October 6, 1673 |
First letter's ten figures published in Philosophical Transactions |
October 24, 1673 |
Leeuwenhoek's family members in 1673 |
November 8, 1673 |
Wrote letter of 1673-11-08 (AB 3) to Henry Oldenburg |
November 28, 1673 |
Named as administrator of the estate of Willem Jans Croonenburgh |
January 1, 1674 |
Paid the Familiegeld (estate tax) |
February 12, 1674 |
Constantijn Huygens wrote to Oldenburg about Leeuwenhoek and his own single-lens microscope |
March 10, 1674 |
nieces Margrieta and Maria Jans de Molijn married Arnoldus van den Heuvel and Cornelis Haaxman |
March 18, 1674 |
sister-in-law Maria de Meij married Pieter Schepens |
April 5, 1674 |
Wrote letter of 1674-04-05 (AB 4) to Constantijn Huygens |
April 7, 1674 |
Wrote Letter 3 of 1674-04-07 (AB 5) to Henry Oldenburg |
April 16, 1674 |
Wrote letter of 1674-04-16 (AB 6) to Henry Oldenburg |
April 24, 1674 |
Wrote letter of 1674-04-24 (AB 7) to Constantijn Huygens |
April 24, 1674 |
Appointed curator of the abandoned estate of Bartholomeus Ritmeier |
May 4, 1674 |
Henry Oldenburg wrote to Leeuwenhoek requesting that he examine saliva, chyle, sweat, and sperm |
June 1, 1674 |
Wrote Letter 4 of 1674-06-01 (AB 8) to Henry Oldenburg |
July 6, 1674 |
Wrote Letter 5 of 1674-07-06 (AB 9) to Henry Oldenburg |
August 1, 1674 |
First observed microbes |
August 11, 1674 |
Visited by Holger Jacobæus, the Bartholin brothers, and Arent Seyn; described as "ingenious but illiterate" |
August 15, 1674 |
Visited by Johannes Swammerdam |
August 16, 1674 |
Ordered as curator to hand over the debt books of Bartholomeus Ritmeier |
August 24, 1674 |
daughter Maria made a will |
August 30, 1674 |
Henry Oldenburg wrote to Leeuwenhoek encouraging him to send more observations |
September 7, 1674 |
Wrote letter of 1674-09-07 (AB 10) to Henry Oldenburg |
September 7, 1674 |
Wrote Letter 6 of 1674-09-07 (AB 11) to Henry Oldenburg |
October 19, 1674 |
Wrote Letter 7 of 1674-10-19 (AB 12) to Henry Oldenburg |
October 25, 1674 |
The Royal Society began requiring an oath of secrecy from the members who attended meetings |
November 5, 1674 |
Henry Oldenburg wrote to Leeuwenhoek encouraging him and asking about the kind of salt he was observing |
November 12, 1674 |
The Royal Society read and discussed Leeuwenhoek's letter of June 1, 1674 |
December 4, 1674 |
Wrote Letter 8 of 1674-12-04 (AB 13) to Henry Oldenburg |
December 21, 1674 |
Appointed to administer the affairs of sister-in-law Maria de Meij |
December 22, 1674 |
sister-in-law Maria de Meij and Pieter Schepens granted a divorce |
December 24, 1674 |
Henry Oldenburg wrote to Leeuwenhoek about his doubts about globules |
December 26, 1674 |
Wrote letter of 1674-12-26 (AB 14) to Constantijn Huygens |
December 31, 1674 |
sister-in-law Catharina Swalmius buried |
January 1, 1675 |
cousin Maerten Huijchs Leeuwenhoek appointed tax farmer |
January 20, 1675 |
Christiaan Huygens wrote to Henry Oldenburg doubting Leeuwenhoek's observations of globules |
January 22, 1675 |
Wrote Letter 9 of 1675-01-22 (AB 15) to Henry Oldenburg |
February 2, 1675 |
Henry Oldenburg wrote to Christiaan Huygens about doubting Leeuwenhoek's globules |
February 11, 1675 |
Wrote Letter 10 of 1675-02-11 (AB 16) to Henry Oldenburg |
February 19, 1675 |
Henry Oldenburg wrote to Leeuwenhoek in response to his letter of 1675-01-22 |
March 26, 1675 |
Wrote Letter 11 of 1675-03-26 (AB 17) to Henry Oldenburg |
April 12, 1675 |
Henry Oldenburg wrote to Leeuwenhoek recommending that he get help from knowledgable people |
August 14, 1675 |
Wrote Letter 12 of 1675-08-14 (AB 18) to Henry Oldenburg |
August 22, 1675 |
Henry Oldenburg wrote to Leeuwenhoek acknowledging reciept of his letters |
September 15, 1675 |
First observed microbes in rain water |
December 15, 1675 |
Jan Vermeer, the painter, buried |
December 20, 1675 |
Wrote Letter 13 of 1675-12-20 (AB 19) to Henry Oldenburg |
January 7, 1676 |
Henry Oldenburg wrote to Leeuwenhoek about the reaction in London to his observations |
January 22, 1676 |
Wrote letter of 1676-01-22 (AB 20) to Henry Oldenburg |
January 26, 1676 |
sister-in-law Maria de Meij buried |
February 13, 1676 |
Henry Oldenburg wrote to Leeuwenhoek requesting that he examine hair |
February 22, 1676 |
Wrote Letter 14 of 1676-02-22 (AB 21) to Henry Oldenburg |
April 5, 1676 |
co-worker Daniel Bogaert married Maria van Rees |
April 21, 1676 |
Wrote Letter 15 of 1676-04-21 (AB 22) to Henry Oldenburg |
April 24, 1676 |
Began series of experiments to observe microbes |
April 26, 1676 |
Began Pepper 2 experiment |
May 1, 1676 |
Constantijn Huygens wrote to Oldenburg that Leeuwenhoek gave him an issue of Philosophical Transactions |
May 4, 1676 |
Henry Oldenburg wrote to Leeuwenhoek about Hooke's and Grew's reactions to recent observations |
May 29, 1676 |
Wrote Letter 16 of 1676-05-29 (AB 23) to Henry Oldenburg |
July 1, 1676 |
Visited by Christiaan Huygens during the summer; he saw the microbes in Leeuwenhoek's infusions |
July 28, 1676 |
Wrote letter of 1676-07-28 (AB 24) to Henry Oldenburg |
July 28, 1676 |
Wrote Letter 17 of 1676-07-28 (AB 25) to Robert Boyle |
September 30, 1676 |
Appointed curator of estate of Catherine Bolnes, Vermeer's widow |
October 8, 1676 |
Henry Oldenburg wrote to Leeuwenhoek; sent Philosophical Transactions no. 127 |
October 9, 1676 |
Wrote Letter 18 of 1676-10-09 (AB 26) to Henry Oldenburg |
October 16, 1676 |
Henry Oldenburg wrote to Leeuwenhoek acknowledging receipt of the letter of 1676-10-09 |
October 23, 1676 |
mentor Cornelis 's Gravesande lent money to Sijmons Decker |
October 30, 1676 |
Wrote letter of 1676-10-30 (AB 27) to Henry Oldenburg |
November 2, 1676 |
Henry Oldenburg wrote to Leeuwenhoek that he would write at greater length soon |
November 7, 1676 |
Wrote letter of 1676-11-07 (AB 28) to Constantijn Huygens |
November 18, 1676 |
Visited by Gottfried Leibniz |
November 25, 1676 |
Magistrates approved payment by Maria Thins so Leeuwenhoek could pay Vermeer's creditors |
November 27, 1676 |
Wrote letter of 1676-11-27 (AB 29) to Henry Oldenburg |
January 22, 1677 |
mentor Jacob Spoors buried |
January 26, 1677 |
Constantijn Huygens wrote to Oldenburg about Leeuwenhoek, a "painstaking man" who should be "cherished" |
January 30, 1677 |
cousin Lambrecht Huijchs Leeuwenhoek (1624-1701) bought A0129 Buitenwatersloot 214 |
February 2, 1677 |
Recovered twenty-six paintings from Jannetje Stevens to help pay Catherine Bolnes' creditors |
February 11, 1677 |
The Royal Society read the first part of Leeuwenhoek's long letter of the previous October 9 |
February 15, 1677 |
Wrote letter of 1677-02-15 (AB 30) to Christiaan Huygens |
February 18, 1677 |
The Royal Society read the second part of Leeuwenhoek's long letter of October 9, 1676 |
February 22, 1677 |
Henry Oldenburg wrote to Leeuwenhoek for more details about his method for observing little animals |
March 4, 1677 |
Henry Oldenburg wrote to Leeuwenhoek requesting that he examine muscle fibers and brains |
March 8, 1677 |
The Royal Society read the third part of Leeuwenhoek's long letter of October 9, 1676. |
March 8, 1677 |
Named quartermaster of the 2nd quarter |
March 12, 1677 |
Maria Thins filed a legal action to prevent Leeuwenhoek from selling The Art of Painting |
March 15, 1677 |
Organized the auction of Vermeer's remaining paintings |
March 23, 1677 |
Wrote Letter 19 of 1677-03-23 (AB 31) to Henry Oldenburg |
March 25, 1677 |
The Royal Society published Michael Butterfield's letter about melting glass to make spherical lenses |
March 25, 1677 |
The Royal Society published Leeuwenhoek's letter of October 9, 1676, reporting microbes in infusions |
April 8, 1677 |
The Royal Society read Leeuwenhoek's letter of March 23, 1677 |
April 10, 1677 |
Henry Oldenburg wrote to Leeuwenhoek relaying the compliments of the members of the Royal Society |
May 14, 1677 |
Wrote Letter 20 of 1677-05-14 (AB 32) to Henry Oldenburg |
May 18, 1677 |
Benedict Haan and Henry Cordes wrote to the Royal Society attesting to microbes in Leeuwenhoek's infusions |
May 27, 1677 |
The Royal Society read Leeuwenhoek's letter of May 14, 1677 |
June 2, 1677 |
Robbert Gordon wrote to the Royal Society attesting to microbes in Leeuwenhoek's infusions |
July 28, 1677 |
Henry Oldenburg wrote to Leeuwenhoek; sent Philosophical Transactions no. 136 |
August 13, 1677 |
Aldert Hodenpijl wrote to the Royal Society attesting to microbes in Leeuwenhoek's infusions |
August 21, 1677 |
Johannes Boogert, Robert Poitevin, and W. van der Burch wrote to the Royal Society attesting to microbes in Leeuwenhoek's infusions |
August 30, 1677 |
Alex Petrie wrote to the Royal Society attesting to microbes in Leeuwenhoek's infusions |
September 5, 1677 |
mentor Henry Oldenburg died in London |
September 11, 1677 |
Visited by Hennig Brand, Hamburg merchant |
October 5, 1677 |
Wrote Letter 21 of 1677-10-05 (AB 33) to Henry Oldenburg |
October 15, 1677 |
The Royal Society requested that Robert Hooke try to replicate Leeuwenhoek's observations |
October 16, 1677 |
Wrote letter of 1677-10-16 (AB 34) to William Brouncker |
November 9, 1677 |
Wrote Letter 22 of 1677-11-09 (AB 35) to William Brouncker |
November 11, 1677 |
Robert Hooke failed to demonstrate "minute animals" in pump water. The Royal Society read the testimonials from people in Delft. |
November 15, 1677 |
Bought land near Berkelse Meer |
November 18, 1677 |
Robert Hooke again failed, using an improved microscope |
November 25, 1677 |
Robert Hooke finally succeeded in replicating Leeuwenhoek's observations of little animals |
December 2, 1677 |
Wrote letter of 1677-12-02 (AB 36) to William Brouncker |
December 8, 1677 |
Constantijn Huygens wrote to Leeuwenhoek about his observations of sperm |
December 16, 1677 |
Robert Hooke demonstrated the superiority of single-lens over double-lens microscopes |
January 1, 1678 |
Nehemiah Grew and Robert Hooke wrote to Leeuwenhoek asking him to further observe sperm |
January 1, 1678 |
Robert Hooke's Lectures and Collections: Cometa, Microscopium published |
January 14, 1678 |
Wrote Letter 23 of 1678-01-14 (AB 37) to Robert Hooke about human blood, blood transfusions, flea larvae, and little animals in pepper water |
January 27, 1678 |
Robert Hooke read Letter 23 of 1678-01-14 |
February 1, 1678 |
Empowered a Gouda notary to sell Vermeer's property to help pay Catherine Bolnes's creditors |
February 1, 1678 |
Robert Hooke wrote to Leeuwenhoek verifying his observations in pepper water |
February 3, 1678 |
Robert Hooke produced two experiments on blood and milk and read the latter part of the letter of 1678-01-14 about phlegm and little animals in pepper water |
February 11, 1678 |
Robert Hooke wrote to Leeuwenhoek about how he verified Leeuwenhoek’s observations of little animals in a pepper infusion |
February 28, 1678 |
Christiaan Huygens began series of observations of microbes replicating and expanding on Leeuwenhoek's |
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 24 of 1678-03-18 (AB 38) to Nehemiah Grew |
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 28, 1678 |
Jan Swammerdam called Leeuwenhoek "biased, and reasons in a very barbarical way" |
April 28, 1678 |
Robert Hooke wrote 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 25 of 1678-05-31 (AB 39) to Nehemiah Grew |
June 6, 1678 |
Christiaan Huygens wrote to Nehemiah Grew about seeing the sperm in human semen |
July 4, 1678 |
Lambert Twent named first postmaster of Delft |