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Updated: June 25, 2025
The long-current idea that animal tissues grow only as a sort of deposit from the blood-vessels was now discarded, and the fact of so-called plantlike growth of animal cells, for which Schwann contended, was universally accepted. Yet the full measure of the affinity between the two classes of cells was not for some time generally apprehended.
"It is a great scheme," Frenhofer assented, "but supposing my master should choose to telephone some small detail to the office of the man Schwann?" "You must hire the yacht of Schwann, just as you were instructed," Hunterleys pointed out. "You must give orders, though, that it is not to leave the harbour until telephoned for.
"Yes, that would do very well, would it not, Fanfar?" asked the girl, eagerly. "Where shall we go?" said Fanfar to Gudel. "We had best take the road to Paris. If we are pursued, we shall find a hiding-place there as well as anywhere else." "Shall we wake Schwann?" asked the clown. "No, no what is the use?
These minute organisms had been studied more or less by a host of observers, but in particular by the Frenchman Cagniard Latour and the German of cell-theory fame, Theodor Schwann. These men, working independently, had reached the conclusion, about 1837, that the micro-organisms play a vastly more important role in the economy of nature than any one previously had supposed.
This paper is in itself of value, yet the most important outgrowth of Schleiden's observations of the nucleus did not spring from his own labors, but from those of a friend to whom he mentioned his discoveries the year previous to their publication. This friend was Dr. Theodor Schwann, professor of physiology in the University of Louvain.
"You need not come up again, unless I call you." "Very good, sir." "And this is not all; please do not gossip about my master. If any one questions you, make no reply." "What could I say?" asked Schwann. "I know nothing!" "You might indulge in suppositions, which I advise you to avoid." "Zounds!" muttered Schwann, as he descended the stairs, "all these airs displease me!
In the further experiments which this query gave rise to, we meet with another illustrious Catholic name, that of Theodor Schwann, better known as the originator of that fundamental piece of scientific knowledge, the cell-theory.
"Tell me again," Hunterleys asked, "at what hour is it to be off the Villa Mimosa?" "At ten o'clock," Frenhofer replied. "A pinnace is to be at the landing-stage of the villa at that time. Mr. Grex, Monsieur Douaille, Herr Selingman, and Mr. Draconmeyer will come on board." "Very good! Now go on your errand to the man Schwann.
Turning now to the great steps in that progress which the biological sciences have made since 1837, we are met, on the threshold of our epoch, with perhaps the greatest of all namely, the promulgation by Schwann, in 1839, of the generalisation known as the 'cell theory, the application and extension of which by a host of subsequent investigators has revolutionised morphology, development, and physiology.
In spite of this progress in knowledge the belief in "spontaneous generation" of such excessively minute organisms as the bacteria and yeasts was general until Theodore Schwann in 1836 performed with them just the same experiment as Redi had performed with blow-flies in 1668. The old notions, nevertheless, survive to this day.
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