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Letters |
Wrote Letter L-483 of 1711-12-29 to Anthonie Heinsius, a cover letter for Letter L-484, naming the author of the article in Philosophical Transactions that he criticizes but does not name in the following letter, meant for publication |
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Letters |
Wrote Letter L-484 of 1711-12-29 to Anthonie Heinsius to refute an article in Philosophical Transactions; he calculates the quantity of blood propelled by each heartbeat and estimates how often the total blood volume circulates through the body |
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Letters |
Wrote Letter L-485 of 1712-03-01 to the members of the Royal Society about the skin and flesh of a whale, its seminal vessels, and its blood with comparisons to the blood of other fish |
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Letters |
Wrote Letter L-486 of 1712-04-12 to the members of the Royal Society about the structure of the genetalia of a female elephant and the structure of an elephant's skin |
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Letters |
Wrote Letter L-487 of 1712-06-10 to the members of the Royal Society about little animals on a mussel's shell, the ciliar motion of the gills, and the intestines and ovaries of mussels |
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Letters |
Wrote Letter L-488 of 1712-11-08 to Anthonie Heinsius, a cover letter for Letter L-489 |
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Letters |
Wrote Letter L-489 of 1712-11-08 to Anthonie Heinsius about the muscle fibres of a whale |
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Letters |
Wrote Letter L-490 of 1712-12-17 to Anthonie Heinsius about salts in the blood of a shrimp and the muscle fibres and enveloping membranes of cod, shrimp, flounder, and perch |
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Letters |
Wrote Letter L-491 of a few years before 1713 to Jan Meerman how barley is filling, but provides little nourishment, also about a membrane in the barley |
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Letters |
Wrote Letter L-492 of 1713-02-28 to Jan Meerman about wheat and barley grains, beans, peas, and chestnuts, vessels and membranes in coconut rind, and the embryo in an apple pip and in a coconut |
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Letters |
Wrote Letter L-493 of 1713-03-14 to Jan Meerman about the eye of a whale, the lens, and the cornea and calculations of the pressure on a whale's eye at great depth |
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Letters |
Wrote Letter L-494 of 1713-03-25 to Adriaen van Assendelft about little hairs of a mouse, mole, cat, and rabbit all have the same shape; thick, dark bear hair, composition and color of hair, hair of deer and elk |
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Letters |
Wrote Letter L-495 of 1713-03-29 to Anthonie Heinsius about the muscles of cows, muscle fibers of mice thinner than whales, fat particles, muscle fibers of sheep same size as of mice and oxen, though the animals differ greatly in size |
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Letters |
Wrote Letter L-496 of 1713-06-28 to the members of the Royal Society about little animals on duckweed, muscle fiber membranes, and a list of unanswered letters; little animals in his mouth come from rinsing glasses with pond water |
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Letters |
Wrote Letter L-497 of 1713-06-30 to Anthonie Heinsius about the composition of crabs’ eyes and lobster and crab shells, ring-shaped structures in lobster pincer shell, compared to annual rings of woody vegetation, and the lobster's muscle fiber membrane |
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Letters |
Wrote Letter L-499 of 1713-10-12 to Hans Sloane as a cover letter for a copy of Letter L-489 on muscle fibres of a whale and a request for new numbers of Philosophical Transactions and a list of fellows of the Society to be sent to relatives in Rotterdam |
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Letters |
Wrote Letter L-501 of 1713-10-24 to Antony Cinck refuting, as requested, Kircher's ideas about poisonous little animals on sage leaves and spontaneous generation |
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Letters |
Wrote Letter L-504 of 1714-06-22 to the members of the Royal Society to acknowledge Letter L-503 and numbers of Philosophical Transactions and to query why figures of the muscle fibres of whales were not published |
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Letters |
Wrote Letter L-507 of 1714-08-21 to the members of the Royal Society about the muscle fibres of cow, chicken, mouse, honeybee, flea, ant, and whale and the blood vessels in the leg of a fly; thanks for recent numbers of Philosophical Transactions |
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Letters |
Wrote Letter L-509 of 1714-10-26 to the members of the Royal Society about muscle fibres and enclosing membranes in the legs of a mosquito, rose chafer, fly, crane fly, honeybee and cow; rectifying earlier opinion, the contractions in a muscle are spiral |
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Letters |
Wrote Letter L-510 of 1714-11-04 to Adriaen van Assendelft, comparison between muscle fibres and a tightened rope; the shorter the rope, the quicker it can shrink; application of this comparison on the size of muscle fibres of a cow and of a mouse |
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Letters |
Wrote Letter L-511 of 1714-11-09 to Isaac Newton, now lost, to cover Letter L-512 |
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Letters |
Wrote Letter L-512 of 1714-11-09 to the members of the Royal Society about the muscles of an ox, sheep, chicken, mouse, and hare |
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Letters |
Wrote Letter L-513 of 1714-11-20 to the members of the Royal Society about muscle fibres and tendons from a mouse leg, a duck wing, a honeybee, a polecat leg, and between the ribs of a mouse; a theory about the structure and action of tendons |
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Letters |
Wrote Letter L-514 of 1715-01-11 to Anthonie Heinsius, a cover letter for a copy of a recent letter on muscle fibres |
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Letters |
Wrote Letter L-516 of 1715-03-26 to Antony Cinck about the structure and action of muscle fibres and tendons from the leg of a mouse and the head of cod and a wire model of spiral contraction |
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Letters |
Wrote Letter L-518 of 1715-07-07 to Antony Cinck about contracting and stretching of muscle fibres and tendons; their connection in lobster and crab; no observed nerves between muscle fibres and membranes; cannot confirm that nerves are hollow |
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Letters |
Wrote Letter L-519, now lost, of sometime before August 1715 to Gottfried Leibniz about his observations and recent letters |
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Letters |
Wrote Letter L-521 of 1715-09-28 to Gottfried Leibniz about scholars who do not agree with Leeuwenhoek; sperm the same size in different animals; the pulse; posthumous letters; muscle fibers, tendons, and nerves; Hartsoeker; why he won't train students |
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Letters |
Wrote Letter L-524 of 1715-11-18 to Gottfried Leibniz about vessels in the flesh of fruit and in the seeds of various strains of pears, a pear's embryo and the structure of a pear's skin, and spiral vessels in tea-leaves |
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Letters |
Wrote Letter L-525 of some years before 1716 to Frederik Adriaan van Reede about the large number of eggs in the roe of a ling |
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Letters |
Wrote Letter L-526 of 1716-02-25 to Anthonie Heinsius as a cover letter to "notes" about tendons, muscle fibres, and starch grains |
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Letters |
Wrote Letter L-527 of 1716-03-13 to Gottfried Leibniz about human twins, trees, birds, size of sperm, number of eggs in fishes' hard roe, structure of tendons and muscle fibres, the heart; does not want to be paid for research or to teach students |
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Letters |
Wrote Letter L-530 of 1716-05-10 to Hubert Kornelis Poot to thank him for two published panegyrics; the size and origin of little animals; wonder at the smallness of little animals and the largeness of the universe; periwinkle seeds |
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Letters |
Wrote Letter L-531 of 1716-05-16 to Gerard van Loon about hops from Liege, the structure of hops, its bitter oil, and salt particles from the oil, a comparison with sugar candy, and hop embryos; Leeuwenhoek descended from a family of beer brewers |
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Letters |
Wrote Letter L-532 of 1716-05-19 to Gottfried Leibniz about muscle and tendon fibers, mammal teats, sperm; did not find eggs in ovaries, Fallopian tube, or womb; cannot imagine how the Fallopian tube could suck sperm; does not know the ovary's function |
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