September 17, 1683 |
Wrote Letter L-135 of 1683-09-17 to Francis Aston about saliva, nasal hairs and blackheads, skin, pores, calluses, and cleaning teeth; the discovery of bacteria in tartar |
September 30, 1683 |
Wrote Letter L-136 of 1683-09-30 to Anthonie Heinsius, a note accompanying a copy of Letter L-135 |
October 1, 1683 |
Melchisédech Thévenot wrote Letter L-138 of October 1683 to Leeuwenhoek, a courteous reply |
October 1, 1683 |
Wrote Letter L-137 of October 1683 to Melchisedec Thévenot with some observations |
October 8, 1683 |
Anthonie Heinsius wrote Letter L-139 of 8 October 1683 to Leeuwenhoek that his work was making a positive impression in Paris and that some of his letters would be published in the new Journal de Médecine |
October 11, 1683 |
Francis Aston wrote Letter L-140 to Leeuwenhoek about the translation of a Dutch phrase concerning egg yolks |
October 14, 1683 |
Wrote Letter L-141 of 1683-10-14 to Anthonie Heinsius in reply to his recent Letter L-139 |
October 18, 1683 |
Anthonie Heinsius wrote Letter L-142 of in response to Letter L-141 |
October 26, 1683 |
Wrote Letter L-143 of 1683-10-26 to Francis Aston in reply to Letter L-140 about egg yolks |
November 3, 1683 |
The Royal Society read and discussed Letter L-135 |
November 10, 1683 |
The Royal Society discussed Leeuwenhoek's observations about pores in the skin in Letter L-135 |
December 28, 1683 |
Wrote Letter L-144 of 1683-12-28 to Francis Aston about human skin and its diseases, the intestines, the effects of vinegar, the intestinal wall and peristalsis, and an experiment to demonstrate the adsorption of food nutrients in the intestines. |
January 1, 1684 |
Daniel Gaesbeeck wrote Letter L-145 of 1684-01-01 to Leeuwenhoek about why he was publishing his letters |
January 1, 1684 |
Published Eyerstok (Ovary), Letters 37, 39 (L-122, L-135) |
January 1, 1684 |
Published Humor Cristallinus (Crystalline Humor), Letter 41 (L-147) |
January 1, 1684 |
Published Onsigtbare Geschapene Waarheden (Invisible Creation Truths), Letters 32, 33, 39 (L-108, L-111, L-135) |
January 1, 1684 |
Published Schobbens in de Mond (Scales in the Mouth), Letter 40 (L-144) |
January 6, 1684 |
Authorized as curator to inspect estate of Willemtie Pieters Touw by her heir |
February 23, 1684 |
The Royal Society read Letter L-144 of 1683-12-28 to Francis Aston |
March 7, 1684 |
Francis Aston wrote Letter L-146 to Leeuwenhoek about the importance of his work |
April 2, 1684 |
cousin Margrieta Maertens Leeuwenhoek married Michiel Reijniers van Hasseld |
April 14, 1684 |
Wrote Letter L-147 of 1684-04-14 to Francis Aston about lenses and corneas, the function of eye-lids, the involuntariness of blinking, the optic nerve, and the skin of Moors |
May 24, 1684 |
The Royal Society read the first part of Letter L-147 about the crystalline humour of the eye |
May 26, 1684 |
William Molyneux demonstrated blood flow in a newt to the Dublin Philosophical Society |
May 31, 1684 |
The Royal Society discussed Leeuwenhoek's observations in Letter L-147 about the crystalline humour of the eye |
June 7, 1684 |
Francis Aston wrote Letter L-148 to Leeuwenhoek to thank him for his letter with observations of the lens of the eye, which was read to the Royal Society and was well-received by them |
June 14, 1684 |
The Royal Society read the latter part of Letter L-147 about the crystalline humour of bird and fish eyes, the vitreous humour, the cornea tunica, and the colour of a Blackamore |
June 15, 1684 |
Visited Christiaan Huygens in Den Haag with the Durven brothers |
July 24, 1684 |
Daniel van Gaesbeeck wrote Letter L-149 about why he was publishing more of Leeuwenhoek's “mutilated”, “mistranslated”, and “misunderstood” letters |
July 25, 1684 |
Wrote Letter L-150 of 1684-07-25 to Members of the Royal Society about parts of the brain of several animals, chalk stones of gout, leprosy, and the scales of eels |
July 27, 1684 |
Christiaan Huygens gossiped about Maria Duyst in a letter to his brother Constantijn Huygens |
September 15, 1684 |
Francis Aston wrote Letter L-151 to Leeuwenhoek that Letter L-150 had not been read by the Royal Society |
December 13, 1684 |
sister Catharina Philips Leeuwenhoek received legacy from great uncle Johan Sebastiaans van den Berch |
December 13, 1684 |
The Royal Society read the first part of Letter L-150 about the brain of several animals, chalk stones of gout, leprosy, and scales of eels |
December 20, 1684 |
cousin Geertruijt Huijchs Leeuwenhoek buried |
January 1, 1685 |
cousin Maerten Huijchs Leeuwenhoek appointed tax farmer |
January 1, 1685 |
Published Anatomia et Contemplatio (Anatomy and Contemplation), Letters 43, 42, 38 (L-128, L-150, L-152) |
January 1, 1685 |
Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 (L-152, L-150, L-128) |
January 1, 1685 |
Published Sout-figuren (Salt figures), Letters 44, 45 (L-154, L-157) |
January 1, 1685 |
Published Zaden van Boomen (Seeds of Trees), Letters 46, 47 (L-160, L-166) |
January 5, 1685 |
Wrote Letter L-152 of 1685-01-05 to Members of the Royal Society about salts in wine and vinegar and in the stomach, the eye, the need for food and water, Descartes's theory on smallest water particles, and a theory of taste - salt, sour and sweet |
January 17, 1685 |
The Royal Society read the latter part of Letter L-150 about the brain of an ox and a sparrow, moxa, chalk from gout, leprosy, and eels, in which he discovered both scales and fins |
January 20, 1685 |
Francis Aston wrote Letter L-153 to inform Leeuwenhoek that his recent letter about wine was favorably received at the Royal Society |
January 23, 1685 |
Wrote Letter L-154 of 1685-01-23 to Members of the Royal Society about salts and their crystals and his theory about the causes of taste |
January 31, 1685 |
The Royal Society read the former part of Letter L-152 about salts in vinegar and wine, vinegar eels, and salts found in vinegar mixed with crabs eyes and chalk |
February 5, 1685 |
Visited by Thomas Molyneux on behalf of the Royal Society |
February 7, 1685 |
The Royal Society read and discussed the latter part of Letter L-152 salt in various wines, mixtures of tartar, crabs eyes, or chalk with wine, and the difference between salts in wines and salts in chalk stones of gout |
February 13, 1685 |
Thomas Molyneaux wrote Letter L-155 of 1685-02-13 to Francis Aston about his visit to Leeuwenhoek's house |
February 19, 1685 |
Francis Aston wrote Letter L-156 to inform Leeuwenhoek that his Letter L-154 about salts was received but had not been read to the Society |
February 23, 1685 |
At age 52, his 25th article in Philosophical Transactions |
March 30, 1685 |
Wrote Letter L-157 of 1685-03-30 to Members of the Royal Society about sperm, the uterus of a bitch, sheep embryos, ovaries in young animals and apples, and his claims that sperm are the life-carriers and that there are male and female sperm |
April 4, 1685 |
The Royal Society read the former part of Letter L-154 about salts in wormwood, alum, and other substances |
April 20, 1685 |
At age 52, his 25th letter in Philosophical Transactions |
May 9, 1685 |
The Royal Society read part of Letter L-154 about oil of tartar, potash, and camphor |
May 16, 1685 |
The Royal Society read the latter part of Letter L-154 about salts in ashes, lime, soda, and sal armoniac |
May 28, 1685 |
The Dublin Philosophical Society asked the Royal Society for a copy of Letter L-154 about salts of wine and vinegar |
May 31, 1685 |
Maria Duyst van Voorhout married Frederik Adriaan van Reede van Renswoude |
June 20, 1685 |
The Royal Society read part of Letter L-157 about the role of eggs and male sperm in a female dog |
June 22, 1685 |
Visited by John Locke |
June 27, 1685 |
Francis Aston wrote Letter L-158 of 1685-06-27 to pass along the recommendation by John Hoskyns that Leeuwenhoek examine silkworm eggs |
June 27, 1685 |
The Royal Society read the latter part of Letter L-157 about sperm and eggs in sheep and rabbits |
July 2, 1685 |
sister Catharina Leeuwenhoek appointed as tax collector for three years |
July 11, 1685 |
cousin Adriaen Lambrechts Leeuwenhoek appointed curator |
July 13, 1685 |
Wrote Letter L-159 of 1685-07-13 to members of the Royal Society about reproduction of trees, transfer of nutrients, male and female trees, hazelnut, comparing reproduction of mammals with reproduction of plants, cross-breeding, and germination |
July 22, 1685 |
Royal Society published Letter L-154, titled, “An abstract of a letter from Mr. Leewenheock, to the R. S. Dated Jan. 23rd, 1685; concerning the various figures of the salts contained in several substances” |
August 3, 1685 |
Anthonie Heinsius wrote Letter L-160 to Leeuwenhoek about Robert Boyle's reaction to the letter about cochineal |
August 9, 1685 |
Francis Aston wrote Letter L-161 of some time between August and October 1685 to inform Leeuwenhoek that Letter L-159 had been received but not yet read |
August 10, 1685 |
Wrote Letter L-162 of 1685-08-10 to Anthonie Heinsius about cochineal |
August 27, 1685 |
editor Edmond Halley did not publish any letters by Leeuwenhoek in Philosophical Transactions from 1685 to 1693 |
August 31, 1685 |
Anthonie Heinsius wrote Letter L-163 of 1685-08-31 about Boyle's idea about the origin of cochineal |
September 21, 1685 |
Wrote Letter L-164 of 1685-09-21 to Anthonie Heinsius about cochineal |
October 1, 1685 |
Visited by Karl von Hessen-Kassel and Willem Meester sometime in October |
October 2, 1685 |
Karel von Hessen-Kassel wrote Letter L-165 to thank Leeuwenhoek for the visit to his house |
October 12, 1685 |
Wrote Letter L-166 of 1685-10-12 to members of the Royal Society about the beginning of plants in seeds; chyle, sweat, about skin, optic nerve, and bile of fish; salts in beer vinegar and lemon juice; and spirits mixed with blood and wine vinegar |
November 5, 1685 |
Constantijn Huygens Jr. wrote to his brother Christiaan about Leeuwenhoek's character and the visit by Hessen-Kassel and Meester |
November 14, 1685 |
The Royal Society read and discussed Letter L-159 about reproduction of trees, comparison of reproduction of mammals with the reproduction of plants, and cross-breeding |
December 1, 1685 |
Visited by De Saingermain, who later called Leeuwenhoek a "Magus" |
December 17, 1685 |
Constantijn Huygens wrote Letter L-167 to Leeuwenhoek about root trees |
December 19, 1685 |
Francis Aston and Tancred Robinson abruptly resigned as the secretaries of the Royal Society, just a week after they had been reelected |
December 25, 1685 |
cousin Elisabeth Maertens Leeuwenhoek married Dirck van Schie |
January 1, 1686 |
Published Cinnaber Naturalis (Natural Cinnabar), Letters 48 - 52 |
January 1, 1686 |
Published Levende Dierkens (Living Animals), Letters 28 - 31, 34 - 36 |
January 1, 1686 |
Sat for his oil portrait by artist Johannes Verkolje (1650-1693) |
January 22, 1686 |
Wrote Letter L-168 of 1686-01-22 to members of the Royal Society about cinnabar naturalis, gunpowder, saltpeter, and air made by gunpowder and crab's eyes |
January 23, 1686 |
The Royal Society read part of Letter L-166 about embryo plants in cotton seeds |
February 6, 1686 |
The Royal Society elected Edmond Halley as clerk |
March 12, 1686 |
Edmond Halley wrote Letter L-170, known only by reference in Letter L-176 |
March 12, 1686 |
Thomas Gale wrote Letter L-169 to Leeuwenhoek reviewing his recent "ingenious and curious communications" |
March 13, 1686 |
The Royal Society read part of Letter L-166 about chyle, sweat, pores of the skin, the crystalline humour of the eye, and the optic nerve |
March 15, 1686 |
A Prussian doctor wrote Letter L-171 of sometime after 1686-03-15 to request a visit, enclosing pieces of amber |
March 16, 1686 |
Antonio Magliabechi wrote Letter L-172 to Leeuwenhoek, a "most courteous and agreeable letter" |
March 20, 1686 |
The Royal Society read part of Letter L-166 about gall and the scales and slime of fish |
March 27, 1686 |
The Royal Society ordered that the unread part of Letter L-166 be read at the next meeting |
April 2, 1686 |
Wrote Letter L-173 of 1686-04-02 to members of the Royal Society about the structure of bone, the bark of trees, skin and scales, the moisture evaporating from his body, and a little peeling piece of skin |
April 3, 1686 |
The Royal Society asked Francis Lodwick to translate Letter L-168 about cinnebar and gunpowder |
April 10, 1686 |
The Royal Society read and discussed Letter L-168 about cinnebar and gunpowder |
April 14, 1686 |
Wrote letter L-174 of 1686-04-14 to Antonio Magliabechi, now lost |
April 24, 1686 |
The Royal Society ordered that Letter L-173 be translated |
May 1, 1686 |
The Royal Society read part of Letter L-168 about the particles composing cinnabar |
May 8, 1686 |
The Royal Society read another part of Letter L-168 about gunpowder explosions and cannon lengths |
May 14, 1686 |
Wrote Letter L-175 of 1686-05-14 to members of the Royal Society about gall-nuts found on oak trees and the germination of plants |
May 22, 1686 |
The Royal Society read part of Letter L-173 about the structure of cotton seed, the sweat glands of the skin, and the slime of fish |
May 25, 1686 |
Edmond Halley wrote Letter L-176 to Leeuwenhoek about a gift from the Royal Society and requesting some portraits |
May 29, 1686 |
The Royal Society decided to send a gift to Leeuwenhoek, De Historia Piscium by Francis Willughby |
June 5, 1686 |
The Royal Society read part of Letter L-173 about bone and wood |
June 8, 1686 |
Bought a burial section in the Oude Kerk |
June 10, 1686 |
Wrote Letter L-177 of 1686-06-10 to members of the Royal Society about seeds of cotton, kapok, Bupariti, and coconuts, the reproduction of shrimp and lobster, and the eggs of shell fish |
June 26, 1686 |
The Royal Society officers declared their satisfaction with the election of Edmond Halley |
July 10, 1686 |
The Royal Society read part of Letter L-177 about how the leaves, root, and stem are wrapped up with the seeds |
July 10, 1686 |
Wrote Letter L-178 of 1686-07-10 to members of the Royal Society about the growth and durability of wood felled in different seasons and countries, the annual growth rings, and how wooden barrels can be made watertight |
July 11, 1686 |
Jacob Gronovius wrote Letter L-179 to Leeuwenhoek about how his letters were received in Italy |
July 17, 1686 |
The Royal Society ordered that Letter L-178 about the texture of oakwood be translated |
September 7, 1686 |
Examined silkworm eggs |
September 10, 1686 |
Wrote Letter L-180 of 1686-09-10 to Daniël Papenbroek, a cover letter for Letter L-181 |
September 10, 1686 |
Wrote Letter L-181 of 1686-09-10 to Antonio Magliabechi, a cover letter for a copy of one of his books |
October 30, 1686 |
Wrote Letter L-182 of 1686-10-30 to Antonio Magliabechi, a cover letter for copies of two of his books |
November 5, 1686 |
Visited by Jacob Gronovius |
December 1, 1686 |
Edmond Halley wrote Letter L-183 to Leeuwenhoek on behalf of the Royal Society, now lost |
January 1, 1687 |
cousin Maarten Pieters Hogenhouck (1650-1720) appointed to Veertigraad, served 1687-1720 |
January 1, 1687 |
Published Anatomia Seu Interiora Rerum (Interior Anatomy), 19 Letters from 28 - 52 |
January 1, 1687 |
Published Anatomia Seu Interiora Rerum (Interior Anatomy), Letters 43, 42, 38 |
January 1, 1687 |
Published Vervolg der Brieven (Continuation of the Letters), Letters 53 - 60 |
January 27, 1687 |
cousin Magdaleentje (Helena) Maertens Leeuwenhoek married Barent van Frijtom |
February 24, 1687 |
Edmond Halley wrote Letter L-184 to Leeuwenhoek on behalf of the Royal Society, assuring him that the portraits he sent are received, wondering why he has not sent any observations recently, and enclosing recent numbers of Philosophical Transactions |
March 1, 1687 |
Wrote Letter L-185 of 1687-03-01 to James II, King of England, as the dedication for one of his volumes |
March 28, 1687 |
mentor Constantijn Huygens died |
April 4, 1687 |
Wrote Letter L-186 of 1687-04-04 to the members of the Royal Society about the structure of the teeth of elephants, pigs, humans, oxen, and horses and about toothache |
April 5, 1687 |
Guarantor for Johan Francisco de Raet when he became a citizen of Delft |
April 16, 1687 |
The Royal Society ordered that Letter L-186 about teeth be translated |
April 23, 1687 |
The Royal Society read part of Letter L-186 about the structure of teeth |
May 7, 1687 |
The Royal Society read the latter part of Letter L-186 about the teeth of various animals |
May 9, 1687 |
Wrote Letter L-187 of 1687-05-09 to members of the Royal Society about the structure of 'stone' of the medlar and the coffee bean and acid in plants |
May 14, 1687 |
The Royal Society read and discussed part of Letter L-187 about embryo plants in seeds |
June 4, 1687 |
The Royal Society read and discussed part of Letter L-187 about coffee |
June 11, 1687 |
cousin Adriaen Lambrechts Leeuwenhoek admitted as notary |
June 13, 1687 |
Wrote Letter L-188 of 1687-06-13 to members of the Royal Society about wheat and the seeds from a variety of plants |
June 18, 1687 |
The Royal Society read part of Letter L-175 about gall nuts, over a year after receiving it |
July 11, 1687 |
Wrote Letter L-189 of 1687-07-11 to members of the Royal Society about eggs of silkworms and caterpillars and humans' squinting and a theory for its cause |
August 6, 1687 |
Wrote Letter L-190 of 1687-08-06 to members of the Royal Society about the calander and the louse and against spontaneous generation |
August 6, 1687 |
Wrote Letter L-191 of 1687-08-06 to Robert Boyle about his recent letters |