United States or Aruba ? Vote for the TOP Country of the Week !
Ah! my friend, listen; for nearly four months I have studied chemistry that I might talk of it with you. I have read Fourcroy, Lavoisier, Chaptal, Nollet, Rouelle, Berthollet, Gay-Lussac, Spallanzani, Leuwenhoek, Galvani, Volta, in fact, all the books about the science you worship. You can tell me your secrets, I shall understand you."
Hitherto, ever since the discovery of magnifying-glasses, there had been here and there a man, such as Leuwenhoek or Malpighi, gifted with exceptional vision, and perhaps unusually happy in his conjectures, who made important contributions to the knowledge of the minute structure of organic tissues; but now of a sudden it became possible for the veriest tyro to confirm or refute the laborious observations of these pioneers, while the skilled observer could step easily beyond the barriers of vision that hitherto were quite impassable.
When in 1690 Leuwenhoek discovered spermatozoa by the aid of the microscope, the idea was evolved that each male cell contained a complete microscopic man, the homunculus; and then it was announced that not Eve, but Adam had contained all humanity within himself.
Hartsocher and Leuwenhoek disputed with each other the honour of having first seen the vermiculi of which mankind are formed. This Hartsocher also contested with Huygens the invention of a new method of calculating the distance of a fixed star. It is not yet known to what philosopher we owe the invention of the cycloid.
He went to Zaandam to see the Greenland whaling fleet, visited the celebrated botanical garden with the great Boerhaave, studied the microscope at Delft under Leuwenhoek, became intimate with the military engineer Coehorn, talked with Schynvoet of architecture, and learned to etch from Schonebeck. An impression of a plate made by him, of Christianity victorious over Islam, is still extant.
If, from the mastodon and the fossil mammoth, to which Buffon attributes five or six times the bulk and size of the elephant, we descend to those animalculae, of which Leuwenhoek estimates that a thousand millions of them would not occupy the place of an ordinary grain of sand."
Word Of The Day