January 1, 1663 |
Christiaen Anhaltin's School-Boeck van de Wyn-Royeryen published |
January 25, 1663 |
son Philips Leeuwenhoek (second) baptized, buried three weeks later |
April 25, 1663 |
brother-in-law Adriaan Johannes Swalmius (1631-1667) married Margrieta van der Burch |
July 2, 1663 |
Christiaan Huygens elected member of the Royal Society |
August 1, 1663 |
Christiaan Huygens received letter from Gutschoven about how to grind small lenses |
January 1, 1664 |
cousin Maerten Huijchs Leeuwenhoek appointed tax farmer |
February 19, 1664 |
cousin Sara Maertens Leeuwenhoek (1664-1693) baptized |
May 11, 1664 |
nephew Johannes Adriaans Swalmius (1664-1693) baptized |
June 25, 1664 |
Bought a garden outside the walls of the city |
August 19, 1664 |
son Philips Leeuwenhoek (third) baptized |
September 3, 1664 |
mother Margriete Jacobs van den Berch (1594-1664) buried in Oude Kerk |
September 29, 1664 |
Owed for store goods by the estate of Elizabeth Cornelis |
November 25, 1664 |
Received a legacy from the estate of great-aunt Aaltge Sebastiaans van den Berch |
January 1, 1665 |
Robert Hooke's Micrographia published |
March 26, 1665 |
Christiaan Huygens acquired Hooke's Micrographia |
July 31, 1665 |
Appointed guardian of second cousin Maria van Halmael |
January 1, 1666 |
mentor Reinier de Graaf (1641-1673) moved to Delft |
May 28, 1666 |
cousin Elisabeth Maertens Leeuwenhoek (1666-1743) baptized |
June 27, 1666 |
son Philips Leeuwenhoek (third) buried in Oude Kerk |
July 14, 1666 |
wife Barbara de Meij buried in Oude Kerk |
October 10, 1666 |
Appointed district supervisor (wijkmeester generaal) |
January 1, 1667 |
Dirck van Bleyswyck's Beschryvinge der Stadt Delft, Description of the City of Delft, published |
February 5, 1667 |
mentor Jacob Spoors married Trijntge Jans |
March 11, 1667 |
Presented will after wife Barbara's death |
May 2, 1667 |
brother-in-law Adriaan Johannes Swalmius (1631-1667) buried |
May 18, 1667 |
Appointed curator of estate of Simon de Bourbon |
July 15, 1667 |
Appeared before the Weescamer to begin the process of curating the estate of Simon de Bourbon |
September 15, 1667 |
aunt Cornelia Jacobs van den Berch buried in Oude Kerk |
January 1, 1668 |
Conducted an experiment with grapevines |
January 1, 1668 |
Traveled to England |
June 13, 1668 |
grandfather Thonis Phillips Leeuwenhoek's will of 1643 presented |
November 14, 1668 |
Delivered to the Weescamer his first accounting as curator over the person and assets of Sijmon Bourbon |
January 1, 1669 |
cousin Pieter Abrahams Hogenhouck (-1679) appointed mayor in 1669-1673, 1677 |
February 4, 1669 |
Certified as a surveyor after passing the oral examination |
February 15, 1669 |
uncle Huijch Thonis Leeuwenhoek buried in Nieuwe Kerk |
October 8, 1669 |
daughter Maria named in will of her aunt Maria de Meij |
July 13, 1670 |
cousin Cornelis Lambrechts Leeuwenhoek (1670-1702) baptized |
August 30, 1670 |
Signed a will as clerk and witness for notary Joris van der Houve |
September 2, 1670 |
Appointed co-wine gauger to help Dirk Arisz. |
November 28, 1670 |
Delivered to the Weescamer his second accounting as curator over the person and assets of Sijmon Bourbon |
December 2, 1670 |
Signed a will as clerk and witness for notary Paul Durven |
December 16, 1670 |
Delivered to the Weescamer the document disposing of the late Sijmon Bourbon's assets |
January 8, 1671 |
Testified to marriage conditions with Cornelia Swalmius |
January 17, 1671 |
daughter Maria made a will |
January 25, 1671 |
Married Cornelia Johannes Swalmius |
April 14, 1671 |
Agreed to act as steward for land inherited by second wife Cornelia |
April 15, 1671 |
Signed a will as clerk and witness for notary Paul Durven |
May 30, 1671 |
cousin Anthonij Lambrechts Leeuwenhoek (1653-1671) buried in Oude Kerk |
October 15, 1671 |
wife Cornelia Johannes Swalmius made a will |
January 10, 1672 |
sister-in-law Elisabeth Johannes Swalmius married Paulus Marcel |
February 17, 1672 |
Jan Strick was buried |
April 9, 1672 |
Disaster Year: Delft sent troops to help defend against the invading French army |
June 12, 1672 |
mentor Reinier de Graaf married Maria van Dijck |
June 29, 1672 |
Disaster Year: unemployed protestors from Schiedam occupied Delft city hall |
July 8, 1672 |
Prince Willem III wrote to the burgemeesters of Delft that those not cooperating in repelling the enemy will be severely punished |
September 10, 1672 |
Prince Willem III wrote to the burgemeesters of Delft concerning the naming of new regents |
September 10, 1672 |
Disaster Year: half of the Veertigraad replaced with pro-Orangist regents |
September 10, 1672 |
mentor Dr. Cornelis 's Gravesande appointed to Veertigraad |
September 21, 1672 |
daughter Maria made a will |
November 7, 1672 |
nephew Arnold Marcel (1672-1748) baptized in Dordrecht |
April 1, 1673 |
cousin Magdaleentje (Helena) Maertens Leeuwenhoek (1653-1720) married Johannes de Coep |
April 28, 1673 |
Wrote Letter L-001 of 1673-04-28 to Henry Oldenburg about mould and a bee's stinger and eye |
May 17, 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 L-002 of 1673-08-15 to Henry Oldenburg about the bee, the movement of liquids in wood and food in a louse, and the composition of air |
August 21, 1673 |
mentor Reinier de Graaf buried |
October 16, 1673 |
First letter's ten figures published in Philosophical Transactions |
October 24, 1673 |
Leeuwenhoek's family members in 1673 |
November 8, 1673 |
Wrote Letter L-003 of 1673-11-08 to Henry Oldenburg about globules in milk and in blood and his theory on the structure and growth of hair and of tumours |
November 28, 1673 |
Named as administrator of the estate of Willem Jans Croonenburgh |
January 1, 1674 |
Paid the Familiegeld (estate tax) |
February 1, 1674 |
Constantijn Huygens wrote Letter L-004 to Leeuwenhoek, enclosing an extract of a letter from Oldenburg that asked Huygens to encourage L.’s nature study |
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 L-005 of 1674-04-05 to Constantijn Huygens about globules in milk and blood and the growth of hair; first mention of red blood corpuscles |
April 7, 1674 |
Wrote Letter L-006 of 1674-04-07 to Henry Oldenburg about globules in milk and blood, the growth of hair and nails, and the anatomy of a louse |
April 11, 1674 |
Constantijn Huygens wrote Letter L-007 to Leeuwenhoek about sending his observations to son Christiaan in Paris |
April 16, 1674 |
Wrote Letter L-008 of 1674-04-16 to Henry Oldenburg about the delivery of his letters and asking Oldenburg to befriend van Conincxbrugh |
April 24, 1674 |
Appointed curator of the abandoned estate of Bartholomeus Ritmeier |
April 24, 1674 |
Wrote Letter L-009 of 1674-04-24 to Constantijn Huygens about his further observations about blood, bones, teeth, and salt |
May 4, 1674 |
Henry Oldenburg wrote Letter L-010 to Leeuwenhoek requesting that he examine saliva, chyle, and sweat |
June 1, 1674 |
Wrote Letter L-011 of 1674-06-01 to Henry Oldenburg about movement of liquid in capillary tubes, structure of body parts, growth of skin, and the size of red blood cells |
July 6, 1674 |
Wrote Letter L-012 of 1674-07-06 to Henry Oldenburg bout sweat, hair, fat, tears, and improved capillary tubes |
August 1, 1674 |
First observed little animals in water |
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 Letter L-013 to Leeuwenhoek, encouraging him to send more observations |
September 7, 1674 |
Wrote Letter L-014 of 1674-09-07 to Henry Oldenburg, stating that he will send further observations |
September 7, 1674 |
Wrote Letter L-015 of 1674-09-07 to Henry Oldenburg about the anatomy of the eye and optic nerve of a cow, minerals eg. salt, clay, English and Flemish earth; first mention of protozoa in stagnant water |
October 19, 1674 |
Wrote Letter L-016 of 1674-10-19 to Henry Oldenburg about eggs in the bile of cow, sheep, rabbits and poultry, the structure of metals, skin, and the bladder, and theories about the sense of taste. |
October 25, 1674 |
The Royal Society began requiring an oath of secrecy from the members who attended meetings |
November 5, 1674 |
Henry Oldenburg wrote Letter L-017 to Leeuwenhoek encouraging him and asking about the kind of salt he was observing |
November 22, 1674 |
The Royal Society asked Olderburg to produce Leeuwenhoek's Letter L-011 of 1 June 1674 |
December 4, 1674 |
Wrote Letter L-018 of 1674-12-04 to Henry Oldenburg about optic nerves and sight; enclosed specimen of cow's optic nerve |
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 26, 1674 |
Wrote Letter L-019 of 1674-12-26 to Constantijn Huygens, enclosing a drawing of the optic nerve and excerpts from two recent letters |
December 31, 1674 |
sister-in-law Catharina Swalmius buried |
January 1, 1675 |
cousin Maerten Huijchs Leeuwenhoek appointed tax farmer |
January 3, 1675 |
Henry Oldenburg wrote Letter L-020 to Leeuwenhoek about his doubts about globules |
January 20, 1675 |
Christiaan Huygens wrote to Henry Oldenburg doubting Leeuwenhoek's observations of globules |
January 22, 1675 |
Wrote Letter L-021 of 1675-01-22 to Henry Oldenburg about a new technique for observing blood and sectioned brain tissue; optic nerve, smoke, gunpowder, and scorpions |
February 11, 1675 |
Wrote Letter L-022 of 1675-02-11 to Henry Oldenburg about crystals, vinegar, soap, spices, cod, louse, and oak leaf. |
February 12, 1675 |
Henry Oldenburg wrote to Christiaan Huygens about doubting Leeuwenhoek's globules |
March 1, 1675 |
Henry Oldenburg wrote Letter L-023 to Leeuwenhoek in response to his Letter L-021 of 1675-01-22 |
March 26, 1675 |
Wrote Letter L-024 of 1675-03-26 to Henry Oldenburg about meals, seeds, and pearls; transparency; movement of fluids in plants and animals |
April 22, 1675 |
Henry Oldenburg wrote Letter L-025 to Leeuwenhoek recommending that he get help from knowledgable people |
August 14, 1675 |
Wrote Letter L-026 of 1675-08-14 to Henry Oldenburg about blood, taste of saps, sugar, and salt, and the mechanics of taste and digestion |
August 22, 1675 |
Henry Oldenburg wrote Letter L-027 to Leeuwenhoek acknowledging reciept of his letters |
September 15, 1675 |
First observed little animals in rain water |
September 20, 1675 |
Appointed curator of estate of Henricus van Zuijlen |
December 15, 1675 |
Jan Vermeer, the painter, buried |
December 20, 1675 |
Wrote Letter L-028 of 1675-12-20 to Henry Oldenburg about various omissions in previous letters, small animals in water, his theory of “globules”, and the aerometer he devised |
January 1, 1676 |
Wrote Letter L-029 of some time in 1676 to Theodore Craanen about gold and mercury |
January 7, 1676 |
Henry Oldenburg wrote Letter L-030 to Leeuwenhoek about the reaction in London to his observations |
January 22, 1676 |
Wrote Letter L-031 of 1676-01-22 to Henry Oldenburg about forwarding his mail and about sending his observations of little animals in water |
January 26, 1676 |
sister-in-law Maria de Meij buried |
February 13, 1676 |
Henry Oldenburg wrote Letter L-032 to Leeuwenhoek requesting that he examine hair |
February 20, 1676 |
Henry Oldenburg wrote Letter L-033 to Leeuwenhoek and pre-paid the postage |
February 22, 1676 |
Wrote Letter L-034 of 1676-02-22 to Henry Oldenburg about hair, cow skin, horn, and bone, inviting Hooke's response |
April 5, 1676 |
co-worker Daniel Bogaert married Maria van Rees |
April 21, 1676 |
Wrote Letter L-035 of 1676-04-21 to Henry Oldenburg about movement of liquid in ash and other trees, little animals in wine, and cinnamon and taste |
April 24, 1676 |
Began series of experiments to observe little animals in spice infusions |
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 14, 1676 |
Henry Oldenburg wrote Letter L-036 to Leeuwenhoek about Hooke's and Grew's reactions to recent observations |
May 29, 1676 |
Wrote Letter L-037 of 1676-05-29 to Henry Oldenburg about disagreements with Grew about the structure of wood and a further account of the vessels, fibres, and medullary rays of wood |
July 1, 1676 |
Visited by Christiaan Huygens during the summer; he saw the little animals in Leeuwenhoek's infusions |
July 28, 1676 |
Wrote Letter L-038 of 1676-07-28 to Henry Oldenburg; now lost |
July 28, 1676 |
Wrote Letter L-039 of 1676-07-28 to Robert Boyle about the effects of air on ammonia and copper |
September 30, 1676 |
Appointed curator of estate of Catherine Bolnes, Vermeer's widow |
October 9, 1676 |
Wrote Letter L-040 of 1676-10-09 to Henry Oldenburg about little animals in various waters and spice infusions, the relationship of their shape to taste, and whether there were little animals in the air |
October 18, 1676 |
Henry Oldenburg wrote Letter L-041 to Leeuwenhoek; sent Philosophical Transactions no. 127 |
October 23, 1676 |
mentor Cornelis 's Gravesande lent money to Sijmons Decker |
October 26, 1676 |
Henry Oldenburg wrote Letter L-042 to Leeuwenhoek acknowledging receipt of the letter of 1676-10-09 |