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Complete Collected Letters

Volumes 18, 19, and 20 of Alle de Brieven / Collected Letters became available at the end of 2024, completing the series begun in 1939. Download for free.

Which number?

Master list (pdf) of all 602 L-numbers, their Leeuwenhoek number, and their Collected Letters number

Life in Holland

in the 1600's

The Sick Child

Old Drinker

Old Woman Selling Fish

Man Writing a Letter

The Poultry Woman

Work in Holland

in the 1600's

Glass blower

Wig-maker

Turner

Book printer

Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 (2nd)

Date: 
January 1, 1691
Sources
Year Author Title
1685 Leeuwenhoek, A. van Onsigtbare verborgentheden
Learn more
Related events: 
Date Event
January 1, 1685 Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 (L-152, L-150, L-128)
January 1, 1698 Published Onsigtbare Verborgentheden (Invisible Mysteries), Letters 38, 42, 43 (3rd)
Related letters: 
What Leeuwenhoek wrote ...
Wrote Letter L-128 of 1683-07-16 to Christopher Wren about the procreation of frogs, sperm in fowl's egg, reproduction of rabbits, little animals in frog intestines, a theory about digestion in humans and fish, and blood
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
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
Related people: 
Cornelis Boutesteyn
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Publications

Life in Holland

in the 1600's

Merry Couple
Harpsichord Lesson
Dancing Lesson
Woman Peeling Apples

Musical Party in a Courtyard

At the Linen Closet