Specimens: Currant bush and seeds

Early in his career, Leeuwenhoek used currant seeds as a unit of measurement.

1673 August 15 (Letter 2) to Henry Oldenburg

1677 October 5 (Letter 33 [21]) to Henry Oldenburg

Later, he several times mentioned currant bushes among groups of similar trees and bushes, especially when he discussed the lice (aphids) that grew on such plants.

1685 October 12 (Letter 88 [47]) to Anthonie Heinsius: currant seeds

1692 April 22 (Letter 120 [72]) to Richard Waller: currant seeds

1695 May 1 (Letter 143 [88]) to Anthonie Heinsius: currant buds

1695 July 10 (Letter 147 [90]) to Frederik Adriaan van Reede van Renswoude: currant bush and its insects

1716 November 17 (Letter 329 [XXX]) to Gottfried Leibniz: currant seeds, why so many.

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Related letters:

What Leeuwenhoek wrote ...
Wrote Letter L-002 of 1673-08-15 to Henry Oldenburg about the bee, the movement of liquids in wood and food in a louse, and the composition of air
Wrote Letter L-111 of 1680-11-12 to Robert Hooke about blood globules, lees of wine, globules in rain water, milk vessels, reproduction, little animals in the male seed of animals, and their incomprehensible smallness
Wrote Letter L-217 of 1692-04-22 to Richard Waller about the construction of an air pump and experiments with different liquids, seeds and small stones in urine, a hog's hair in the skin of a child, and grains of wheat
Wrote Letter L-251 of 1695-05-01 to Anthonie Heinsius about weevils, nutmegs and their safe storage, and tobacco seeds and their germination
Wrote Letter L-260 of 1695-07-10 to Frederik Adriaan van Reede about aphids, their reproduction, and the unsuccessful search for male aphids
Wrote Letter L-362 of sometime in October 1699 to Ehrenfried von Tschirnhaus about medicines, his aversion to bleeding and purging, and his preference for tea and coffee as medicine; credulity of people who trust impostors and poorly trained physicians
Wrote Letter L-399 of 1701-12-20 to the members of the Royal Society about the sperm of spiders and how they copulate
Wrote Letter L-545 of 1716-11-17 to Gottfried Leibniz about reproduction, numbers of sperm and seeds, reproductive organs of sheep and ram, fallopian tube too small to let eggs through

Related people:

Henry Oldenburg

Anthonie Heinsius

Richard Waller

Frederik Adriaan van Reede van Renswoude

Gottfried Leibniz

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Leeuwenhoek's science

Work in Holland

in the 1600's

Specimens: Currant bush and seeds

Life in Holland

in the 1600's