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Letters |
Wrote Letter L-428 of 1704-11-04 to the members of the Royal Society about little animals with two wheels, found on duckweed, how they move, their parasites, and the theory that sea water makes land more fertile |
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Letters |
Wrote Letter L-431 of 1704-12-13 to the members of the Royal Society about the origin of rock-crystal and a description and analysis of fossils of sea animals and two Roman dice all found in Switzerland and given to him by Pieter Valkenier |
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Letters |
Wrote Letter L-433 of 1705-03-03 to the members of the Royal Society about silver deposits on his own hands after he mixed gold and silver with acid and treatment of a callous on his own finger with vitriol and then acid |
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Letters |
Wrote Letter L-434 of 1705-03-03 to John Chamberlayne about vitrified matter from a haystack that had caught fire, sent to Leeuwenhoek with Letter L-429 |
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Letters |
Wrote Letter L-436 of 1705-03-12 to Antonio Magliabechi about precipitating silver from aqua fortis, silver sulphate crystals, their comparison with rock crystal, saltpetre, and sugar candy |
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Letters |
Wrote Letter L-437 of 1705-03-27 to the members of the Royal Society about his theory that bark tissue is formed from wood; cross-sections and pictures of vessels and cells of bark and wood tissue of cherry, birch, cinnamon, and lime trees and from cork |
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Letters |
Wrote Letter L-438 of 1705-04-24 to the members of the Royal Society about a fern and its seed capsules and an experiment to open and close them |
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Letters |
Wrote Letter L-439 of 1705-05-25 to the members of the Royal Society about crystals from various minerals that Pieter Valkenier left after his recent visit and experiments to dissolve and recrystallize them |
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Letters |
Wrote Letter L-441 of 1705-12-18 to Francesco Corner about the structure of a pearl compared to that of an oyster's shell, salts from pearls and oysters' shells heated and afterwards dissolved, and an argument against the grit of pearls as medicine |
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Letters |
Wrote Letter L-442 of 1705-12-29 to the members of the Royal Society about pumice stone, its origins, and its salts, sponge and a theory about how it absorbs water, and coral |
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Letters |
Wrote Letter L-444 of 1706-03-07 to Govert Bidloo to follow up on his visit earlier that day about what Leeuwenhoek discovered in the intestines they had viewed |
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Letters |
Wrote Letter L-446 of 1706-03-19 to the members of the Royal Society about an East Indian tree and mixing his own blood with the crushed seed of the tree and water, the effects of a drink made from hemp seed, and a dissected hemp seed |
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Letters |
Wrote Letter L-447 of 1706-04-20 to the members of the Royal Society about a piece of hanged woman's intestinal wall brought to him by Govert Bidloo |
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Letters |
Wrote Letter L-448 of 1706-06-01 to the members of the Royal Society about the structure of a sheep's spleen and a flea's organ for stinging and sucking |
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Letters |
Wrote Letter L-449 of 1707-01-01 to Angelus van Wikhuysen about the use of cinchona bark as a remedy |
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Letters |
Wrote Letter L-454 of 1707-07-05 to the members of the Royal Society to acknowledge the receipt of Letter L-453 and to cover the enclosed copy of Letter L-436 of 12 March 1705 to Magliabechi |
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Letters |
Wrote Letter L-455 of 1707-07-12 to the members of the Royal Society as thanks for numbers of Philosophical Transactions and as cover to a copy of Letter L-441 to Corner; mentioned the visit of Gilbert Burnet |
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Letters |
Wrote Letter L-458 of 1707-08-10 to Anthonie Heinsius as a cover letter for a copy of Letter L-457 of 25 July 1707 to the Royal Society |
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Letters |
Wrote Letter L-459 of 1707-10-18 to the members of the Royal Society about the fur on his own tongue after an attack of fever, the fur of a thrush patient, and a theory about the origin of tongue fur |
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Letters |
Wrote Letter L-461 of 1707-11-22 to the members of the Royal Society about a hairy substance, received with Letter L-460, supposedly excreted by a woman suffering from a kidney infection |
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Letters |
Wrote Letter L-462 of 1707-12-06 to the members of the Royal Society about the tongue of an ox, its skin and papillae, and the tongue of a pig with its papillae and muscle fibres |
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Letters |
Wrote Letter L-463 of 1708-01-01 to the members of the Royal Society about the composition of red coral, the effects when heated and when dissolved in aqua fortis and boiling rain water, and crystals in dissolved coral |
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Letters |
Wrote Letter L-464 of 1708-06-29 to the members of the Royal Society about his further observations of the white furry substance on his own tongue during attacks of fever |
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Letters |
Wrote Letter L-467 of 1708-08-28 to the members of the Royal Society about how an eel's heart and the valves in the vien of its tail work; his own pulse and pulsation of the heart of an eel and a pike |
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Letters |
Wrote Letter L-468 of 1708-10-09 to the members of the Royal Society about the mucous membrane in the palate and in the nose of a cow and about its tongue |
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Letters |
Wrote Letter L-470 of 1709-09-10 to Hans Sloane, a cover letter for the following Letter L-471 to John Chamberlayne. |
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Letters |
Wrote Letter L-471 of 1709-09-10 to John Chamberlayne about the cutting edge of a razor and its nicks as well as its setting and maintenance |
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Letters |
Wrote Letter L-472 of 1709-11-22 to John Chamberlayne about human beard hairs and muscle fibres of a cod, both cut off with a razor |
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Letters |
Wrote Letter L-474 of 1710-01-14 to the members of the Royal Society about Alexander Stuart's visit, blood circulation in eels, crystallisation of sugar, minerals from Hungary, and his new fish viewer for visitors to see blood circulating in an eel's tail |
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Letters |
Wrote Letter L-475 of 1710-02-21 to the members of the Royal Society about the shape and crystallization of diamonds |
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Letters |
Wrote Letter L-476 of 1710-06-06 to the members of the Royal Society about silver dissolved in aqua fortis |
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Letters |
Wrote Letter L-477 of 1710-11-11 to the members of the Royal Society about what happened when he dissolved gold dust from Guinea in aqua regia |
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Letters |
Wrote Letter L-479 of 1711-08-15 to Anthonie Heinsius as a cover letter for Philosophical Transactions, vol. 26, no. 319, with Leeuwenhoek's article on the pulse and copies of notes on gold from Guinea and hailstones |
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Letters |
Wrote Letter L-480 of 1711-08-18 to James Petiver about the sperm of young rams and to explain what happened when Petiver tried to visited |
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Letters |
Wrote Letter L-481 of 1711-09-22 to the members of the Royal Society about mites, their reproduction, eggs, larvae, a calculation of the size of a mite egg, the hair of a honey-bee, and metamorphis of larvae from dried fish into a full-grown animal |
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Letters |
Wrote Letter L-482 of 1711-11-23 to Anthonie Heinsius about claims by Fryer and Kircher supporting spontaneous generation, which Leeuwenhoek rejected; gold, copper, and silver dissolved in aqua fortis and the separation of gold and copper |
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