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

Life in Holland

in the 1600's

The Wine Drinker

Man Writing a Letter

The Letter-Writer Surprised

The Poultry Woman

Work in Holland

in the 1600's

Vessels and fibers of pig brain

Figure 9: piece of dried pig brain showing two blood vessels

Figure 10: section of pig brain showing fibers dividing and joining

Figure 11: section of pig brain showing fibers dividing and joining

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Related letters:

Wrote Letter L-549 of 1717-03-06 to the members of the Royal Society about pig brains, apples, and coconuts; blood circulation nourishes; new technique to examine brains; tea and coffee keep the blood thin

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