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Updated: May 21, 2025
At certain seasons of the year myriads of these little Animalcules may be seen in every brook and road-side pool. They are like transparent little globules, without any special organization, apparently; and were it not that they are in constant rotation, exhibiting thus a motion of their own, one would hardly suspect that they were endowed with life.
The bite burns severely, and presently the skin rises in bosses, lasting for days with a severe itching, which, if unduly resented, may end in inflammatory ulcerations I can easily understand a man being laid up by their attacks. The animalcules act differently upon different constitutions.
The things that correspond to evil uses, that is, to hurtful plants and noxious animals, are cadaverous, putrid, excrementitious, stercoraceous, rancid, and urinous matters; consequently, in places where these are, such herbs and such animalcules spring forth as are mentioned above; and in the torrid zone, like things of larger size, as serpents, basilisks, crocodiles, scorpions, rats, and so forth.
There stands the convent, at which you would like to rest and refresh yourself." The Saxon pointed to a low, clumsy building of timber, forlorn and decayed, close by a rank marsh, over which swarmed gnats, and all foul animalcules.
Not only men and horses, and cats and dogs, lobsters and beetles, periwinkles and mussels, but even the very sponges and animalcules commence their existence under forms which are essentially undistinguishable; and this is true of all the infinite variety of plants.
And even in the case of animalcules, as seen in the object glass of the microscope, there is no absolute certainty that their quick, darting or jerking movements are due to any life-manifestation, as heretofore assumed. Some quite as well defined forms are entirely motionless, and if all were so, it would be idle to predicate vitality of them.
These germs, multiplying themselves by fissiparous generation, will constitute a stock of animals of a low type, such as a tribe of infusory animalcules.
Needham found that, under the circumstances in which he made his experiments, animalcules always did arise in the infusions, when a sufficient time had elapsed to allow for their development.
"Wednesday Evening was occupied by the usual week-day service, and Thursday and Friday evenings were devoted to the exhibition in the school-room, first to the women and then to the men, of a large magic lantern, with oxygen light, and also a microscope, showing living insects and sea-water animalcules, as well as various slides. "The above is but an imperfect sketch of the efforts made by Mr.
They are "single cells" that is to say, "protoplasmic" animalcules of the simplest structure provided with a vibrating crest and tail by means of which they swim with incessant screw-like movement through the blood. They rarely exceed one thousandth of an inch in length exclusive of the tail. A peculiar species is found in the blood of the common frog, and another in that of the sewer-rat.
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