September 9, 1687 |
Wrote Letter L-192 of 1687-09-09 to members of the Royal Society about ant eggs, larvae and its development, feeding, sting, cocoon and nest |
October 7, 1687 |
Appointed curator of the abandoned estate of Evert van der Sijde |
October 17, 1687 |
Wrote Letter L-193 of 1687-10-17 to members of the Royal Society about amber, 'burned paper' from the sky, rotifers, maggots, blow flies, the stinging hairs of nettles, and the East-Indian centipede |
November 24, 1687 |
nephew Johannes Adriaans Swalmius married Magdelena van Mierop |
November 26, 1687 |
The Royal Society read part of Letter L-192 about the generation of ants |
November 28, 1687 |
Wrote Letter L-194 of 1687-11-28 to members of the Royal Society about his discovery that cochineal was an insect and his experiments with cinchona bark |
December 3, 1687 |
The Royal Society read and discussed the latter part of Letter L-192 about the generation of ants |
December 11, 1687 |
The Royal Society ordered that Letter L-194 be translated |
January 1, 1688 |
Published Vervolg der Brieven (Continuation of the Letters), Letters 53 - 60 (2nd) |
January 1, 1688 |
Wrote Letter L-195 of sometime in 1688 to Robert Boyle, now lost |
April 2, 1688 |
printer-bookseller Hendrik van Cronevelt bought the house next door |
May 25, 1688 |
Wrote Letter L-196 of 1688-05-25 to members of the Royal Society about a medicinal root and bladderstones |
July 6, 1688 |
Wrote Letter L-197 of 1688-07-06 to the members of the Royal Society bezoar stone, monkey stone, gout tubercles, and red coral and white coral |
August 3, 1688 |
Wrote Letter L-198 of 1688-08-03 to the members of the Royal Society about plaster, alabaster, gypsum, Muscovite glass, cobblestone, shell lime, masonry mortar, lime, cement, sand stone, and slate |
August 24, 1688 |
Wrote Letter L-199 of 1688-08-24 to the members of the Royal Society about gnats, horseflies; growth of branches, germination of wheat plants, the soft and hard roe of cod, and the number of sperm in a cod's soft roe |
September 7, 1688 |
Wrote Letter L-200 of 1688-09-07 to the members of the Royal Society about development of the eggs of green frogs, blood circulation in frogs and the tail fin of roach and bream, and the shape of red blood cells |
September 15, 1688 |
Published Den Waaragtigen Omloop des Bloeds (On the True Circulation of Blood), Letter 65 (L-200) |
September 23, 1688 |
Wrote Letter L-201 of 1688-09-23 to Melchisedec Thevenot, a cover letter for a copy of Leeuwenhoek's Letter L-200, published separately as Den waaragtigen omloop des bloeds. |
January 1, 1689 |
Published Continuatio Epistolarum (Continuation of the Letters), Letters 53-60 |
January 1, 1689 |
Published Tweede Vervolg der Brieven (Second Continuation of the Letters), Letters 61 - 67 |
January 1, 1689 |
Wrote Letter L-202 of sometime in 1689 to Antonio Magliabechi, a cover letter for one of his books |
January 12, 1689 |
Wrote Letter L-203 of 1689-01-12 to Robert Boyle, a cover letter for Continuatio epistolarum and a copy of Letter L-204 |
January 12, 1689 |
Wrote Letter L-204 of 1689-01-12 to the members of the Royal Society about his observation of the circulation of the blood in a variety of fish as well as a description of the construction of his ‘eel spy-glass’ and the slime on the skin of an eel |
March 6, 1689 |
Christiaan Huygens wrote Letter L-205 to Leeuwenhoek, thanking him for the gift of a mangrove tree and inquires whether L.’s observations of the circulation of the blood could also be seen in the wings of bats, the legs of ducks, and the ears of rats |
April 1, 1689 |
Did not write any letters between April 1689 and mid-September 1691 |
April 1, 1689 |
Wrote Letter L-206 of 1689-04-01 to the members of the Royal Society |
April 23, 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 1, 1689 |
Wrote Letter L-207 of October 1689 to Christiaan Huygens about sending books to his brother Constantijn Huygens in London |
October 19, 1689 |
cousin Adriaen Lambrechts Leeuwenhoek married Eva Jacobs Overschie |
March 6, 1690 |
Christiaan Huygens wrote Letter L-208 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, "who tells me what he observes" |
May 27, 1691 |
Antonio Magliabechi wrote Letter L-209 of 1691-05-27 to Leeuwenhoek about book news and Leibniz's reaction to some of Leeuwenhoek's observations |
September 18, 1691 |
Wrote Letter L-210 of 1691-09-18 to Antonio Magliabechi about |
September 21, 1691 |
William Stanley wrote Letter L-211 of 1691-09-21 to Leeuwenhoek, a courtesy letter |
October 21, 1691 |
Appointed executor of estate of his maid, Neeltie Jan de Vries |
November 10, 1691 |
maid Neeltie Jans de Vries died |
November 27, 1691 |
Wrote Letter L-212 of 1691-11-27 to the members of the Royal Society about blood, chyle, and an experiment to discover the volume of water when it is cold and when it is heated |
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 1, 1692 |
William Molyneaux wrote about a visit to Leeuwenhoek |
January 4, 1692 |
Wrote Letter L-213 of 1692-01-04 to the members of the Royal Society about bladder and kidney stones and a chalk-like substance from a gout stone |
January 13, 1692 |
niece Geertruijt Jans de Molijn inherited property from her father Jan Jacobs |
February 1, 1692 |
Robert Hooke called Leeuwenhoek the microscope's "single votary" |
February 1, 1692 |
Wrote Letter L-214 of 1692-02-01 to the members of the Royal Society about various peppers and their taste, tea and its effects of tea on digestion, and Spanish fly |
February 12, 1692 |
Richard Waller wrote Letter L-215 to Leeuwenhoek about his recent observations and the structure of grass |
March 7, 1692 |
Wrote Letter L-216 of 1692-03-07 to the members of the Royal Society about corn-weevels, corn-moths, caterpillars, butterflies, calanders, lice in corn-lofts, little animals in rain water, black-flies in blossoms, and maggots in cheese |
March 19, 1692 |
Reimbursed for purchase of distilled water and wine |
April 22, 1692 |
Wrote Letter L-217 of 1692-04-22 to Richard Waller about the construction of an air pump and experiments with different liquids, seeds and small stones in urine, a hog's hair in the skin of a child, and grains of wheat |
June 24, 1692 |
Antonio Magliabechi wrote Letter L-219 of 1692-06-24 to Leeuwenhoek about recent books that he thought might be of interest by Ramazzini and Guiglielmini |
June 24, 1692 |
Wrote Letter L-218 of 1692-06-24 to the members of the Royal Society about more experiments with his air-pump, the structure of and blood in an insect's wing, a grey owlet moth, and the wing of a very small fly |
July 22, 1692 |
Christiaan Huygens began second series of observations of little animals replicating and expanding on Leeuwenhoek's |
August 12, 1692 |
Wrote Letter L-220 of 1692-08-12 to the members of the Royal Society about the shaft of a bird's feather as used in a quill, the lens and cornea of the human and calf eyes, 'wood-pipes' in different species of wood, bulrushes, and pine and lime wood |
September 16, 1692 |
Wrote Letter L-221 of 1692-09-16 to the members of the Royal Society about little animals in dental tartar, theories of eel reproduction, worms in eel intestines, and blood vessels in grasshoppers |
September 23, 1692 |
Wrote Letter L-222 of 1692-09-23 to Mary, Queen of Great Britain, the dedication to Derde Vervolg der Brieven |
October 20, 1692 |
Christiaan Huygens wrote Letter L-223 to Leeuwenhoek about the procreation of eels and 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 |