I have often endeavoured to view the circulation of the blood in terrestrial animals, but without success, by reason that no parts of their bodies were sufficiently transparent.
ANTONIE VAN LEEUWENHOEK
ANTONIE VAN LEEUWENHOEK
Antonie van Leeuwenhoek on animal
Antonie van Leeuwenhoek38 quotes“I have often endeavoured to view the circulation of the blood in terrestrial animals, but without success, by reason that no parts of their bodies were sufficiently transparent.”
More from Antonie van Leeuwenhoek
[M]y work, which I’ve done for a long time, was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge, which I notice resides in me more than in most other men.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek In it, that sometimes more than a thousand were moving about in an amount of material the size of a grain of sand…
Antonie van LeeuwenhoekAntonie van Leeuwenhoek Whenever I found something remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people be informed thereof.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek Man has always to be busy with his thoughts if anything is to be accomplished.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek In the year 1657 I discovered very small living creatures in rain water.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek And I judge that some of these little creatures were above a thousand times smaller than the smallest ones I have ever yet seen, upon the rind of cheese, in wheaten flour, mould, and the like.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek I’ve spent more time than many will believe [making microscopic observations], but I’ve done them with joy, and I’ve taken no notice those who have said why take so much trouble and what good is it?
Antonie van LeeuwenhoekAntonie van Leeuwenhoek The 31th of May, I perceived in the same water more of those Animals, as also some that were somewhat bigger.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek And therewithal, whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people might be informed thereof.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek This particle I concluded to be the heart.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek For, the circumference of one of these little Animals in water, is not so big as the thickness of a hair in a Cheese-mite.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek And I imagine, that [ten hundred thousand] of these little Creatures do not equal an ordinary grain of Sand in bigness: And comparing them with a Cheese-mite (which may be seen to move with the naked eye)
Antonie van LeeuwenhoekAntonie van Leeuwenhoek Ten hundred thousand of them could not equal the dimensions of a grain of such course Sand.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek I observed certain animalcules, within whole bodies I saw so quick a motion as to exceed belief; they were about the size of a large grain of sand, and their bodies being transparent, that the internal motion could plainly be seen.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek I have divers times endeavoured to see and to know, what parts the Blood consists of; and at length I have observ’d, taking some Blood out of my own hand, that it consists of small round globuls driven through a Crystalline humidity or water.
Antonie van LeeuwenhoekAntonie van Leeuwenhoek The whole circumference of each of these streaks was about the thickness of a hair of one’s head. … all consisted of very small green globules joined together: and there were very many small green globules as well. [The earliest recorded observation of the common green alga Spyrogyra.]
Antonie van LeeuwenhoekAntonie van Leeuwenhoek
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