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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 Intruder

The Wine Drinker

The Virginal Lesson

Woman Feeding a Cat

Man Writing a Letter

Work in Holland

in the 1600's

Spectacle maker

Glazier

Physician

Spinner

Philosophical Transactions, vol. 31, no. 367 published with two letters by Leeuwenhoek, L-565 and L-568

Date: 
May 11, 1721

The date is New Style, which was eleven days ahead of the Old Style date of 30 April 1721 used in London.

Sources
Year Author Title
1665 various Philosophical Transactions
1720 Leeuwenhoek, A. van Observations upon the Membranes Enclosing the Fasciculi of Fibres, into Which a Muscle is Divided. By Mr. Leeuwenhoek, F. R. S. Translated by Dr. Sprengell, F. R. S.
1720 Leeuwenhoek, A. van Observations upon the Vessels in Several Sorts of Wood, and upon the Muscular Fibres of Different Animals. By the Same Curious and Inquisitive Person
Learn more
Related letters: 
What Leeuwenhoek wrote ...
Wrote Letter L-565 of 1720-01-09 to the members of the Royal Society about muscle fibres and membranes of a cow, mites on the flesh of a whale, and the nerves around the muscle fibres and tendons of a cow
Wrote Letter L-568 of 1721-01-24 to the members of the Royal Society about vessels in wood from Ambon (Indonesia), oakwood, and pinewood, the muscle fibres of a cow, a whale, and a mouse, and the structure of a red blood cell

Life in Holland

in the 1600's

The Christening
Feast of Saint Nicolaas
Merry Couple
Woman and Child Bleaching

Paying the Hostess

Woman Peeling Apples