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350th anniversary: Antonie van Leeuwenhoek wrote a letter to the Royal Society describing...

Fri, October 9, 2026

31 days ago

Source

In 1676, Antonie van Leeuwenhoek wrote a letter to the Royal Society describing "animalcules" – the first known description of protozoa (pictured).

Also on Oct 9, 2026

Source, method and history
Source
Wikipedia
How we know
Wikipedia "On this day" selected anniversary, 350 years (1676 to 2026).
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