The universality of life is so profusely distributed throughout the whole of nature, that the smaller Infusoria live as parasites on the larger, and are themselves inhabited by others, s.
They are distinctly animal in function, and the Gymnostomaceae are active predaceous beings preying on other Infusoria or Flagellates.
Parasitism in the Infusoria is by no means so important as among Flagellates.
The Ciliate Infusoria represent the highest type of Protozoa.
The pellicle of the Infusoria is stronger and more permanent than in many Protozoa, and sometimes assumes the character of a mail of hard plates, closely fitting; but even in this case it undergoes solution soon after death.
The digestive apparatus of the Infusoria has been the subject of numerous observations, and has been provocative of very animated discussions.
Unhappy, indeed, is the fate of the unfortunateinfusoria which chance leads at this moment into the fatal circle.
These curious infusoria live in stagnant waters, feeding on the débris of aquatic plants, from which they draw their chief nourishment as well as their colour.
This view of the extreme simplicity of structure in the Infusoria has, however, met with much opposition.
The egg becomes a sort of infusoria, the infusoria becomes a bipinnaria, and this produces the Asterias.
Our earliest knowledge of the Infusoria is traceable to the seventeenth century; to the celebrated naturalist, Leuwenhoek, we are indebted for their discovery.
The infusoria make use of the lime, silica, and potassa for the same purpose.
The wonderful changes of form undergone by many infusoria have their limits, and the laws governing them have still to be defined.
How vast the disparity between the microscopic infusoria and the gigantic whale!
The reproduction of the Infusoria exhibits some very surprising phenomena, while it offers another proof of the wonderful means Nature employs for perpetuating the races of animals.
Authors who have written on the Infusoria have sometimes, like Leuwenhoek, Ehrenberg, and Pouchet, attributed to them a very complex structure.
The Eugleniæ are infusoria usually coloured green or red.
In most cases reproduction by spores is the consequence of conjugation, but in the Infusoria etc.
A division of ciliatedInfusoria having a circle of cilia around the oral disk and sometimes another around the body.
A division of ciliated Infusoriain which the cilia cover only the under side of the body.
A genus of minute flagellate Infusoria of which there are many species, both free and attached.
A genus of Infusoria which form minute vaselike or tubular cases in which they dwell.
An order of Infusoria having the body armed with somewhat stiff, tubular processes which they use as suckers in obtaining their food.
Fossil Infusoria are mostly the siliceous shells of diatoms; sometimes they are siliceous skeletons of Radiolaria, or the calcareous shells of Foraminifera.
Ehrenberg, Professor, oninfusoria in the Pampean formation.
Alta, shells, bones, and infusoria of; co-existence of the recent shells and extinct mammifers.
He would oppose to the doctrine of Weismann the conclusions of Maupas, the French biologist, who has followed infusoria through 600 generations.
The properties which Oken ascribes to his Infusoria are exactly the properties of cells, the properties of elementary beings, by whose accumulation, combination, and varying development, the higher organisms are formed.
He had compared this digestion with that of the superior Infusoria and had seen in it one more proof of the genetic connection between the type of the Protozoa and that of worms.
Thus, many ciliate infusoria choose bacteria only for their food; they are sharply repelled by dead infusoria, etc.
Why are there such multitudes of infusoria and polyps, or of confervae and other cryptogamic plants?
In regard to marine infusoria found in volcanic tuff; it is well known that on the shores of the island of Cephalonia in the Mediterranean (Proceedings, Geol.
Most of the ciliated infusoria and many of the rhizopods (amoeba) are cathodically sensitive or negatively galvanotactic.
The Abbe Spallanzani showed in 1687 that no infusoria appear in these infusions if they are well boiled and the vessel is carefully closed; the boiling kills the germs in them, and the exclusion of air prevents the entrance of fresh germs.
His "infamous" theory of a primitive slime, and the development of infusoria out of it, is merely the fundamental idea of the theory of protoplasm and the cell which was long afterwards fully recognized.
On the other hand, the highly differentiated infusoria (ciliata) show so great a resemblance to the higher animals in their differentiated and autonomous movements that they have been credited with the possession of "free-will.
Most of the flagellate infusoria do just the reverse; they are anodically sensitive or positively galvanotactic.
On the other hand, most of the infusoria have a definite mouth-opening in the outer wall of their unicellular body, and sometimes a gullet-tube as well.
Some groups of protists, especially the highly organized ciliated infusoria (ciliata), are distinguished by having a separation of male and female plasm within the unicellular organism.
When two ciliated infusoria conjugate they place themselves side by side, and connect for a time by means of a bridge of plasm.
Perhaps the animalcula or infusoria furnish the best example.
But the facts recently brought to light respecting infusoria and polythalamia fill us with the greatest admiration of the extent of organic life upon the globe.
Ehrenberg has ascertained that at least fifty-seven species of the microscopic animals of the chalk, being infusoria and calcareous-shelled polythalamia, are still found living in various parts of the earth.
I have already mentioned the infusoria which swarm by the thousands in the water of ditches and puddles.
Defn: A genus of Infusoria which form minute vaselike or tubular cases in which they dwell.
Defn: Any one of numerous species of ciliated Infusoria belonging to Vorticella and many other genera of the family Vorticellidæ.
Defn: A division of Infusoria including the Noctiluca.
Defn: A division of ciliated Infusoria having a circle of cilia around the oral disk and sometimes another around the body.
Defn: Any species of ciliated Infusoria belonging to the genus Stentor and allied genera, common in fresh water.
Defn: A genus of minute flagellate Infusoria of which there are many species, both free and attached.
Defn: A division of ciliated Infusoria in which the cilia cover only the under side of the body.
He announced definitely infusoria non oriuntur generatione aequivoca--the infusoria do not originate by spontaneous generation.
From sea-urchins and starfish to infusoria and polycystina, whose varieties he was himself the first to recognize and describe.
Probstmayer’s viviparous oxyurids, the infusoria of the colon and cæcum of the solipeds, and the psorosperms of the liver of the rabbit did not stir at all.
The embryos of Bilharzia and other infusoriaexhibit the same behaviour, and, as Leuckart observes, when these embryos knock against any obstruction, they pause after the blow, as if to consider the nature of the substance they have touched.
Footnote 61: Professor Gruber informs me that among the Infusoria of the harbour of Genoa, he has observed a species which encysts upon one of the free-swimming Copepoda.
Confirmation of the theory as to the significance of the 185 nuclear substance afforded by Nussbaum’s and Gruber’s experiments on regeneration in Infusoria 5.
While in other Infusoria the products of fission exactly resemble the parent, in Ichthyophthirius they have a different form; the sucking mouth is wanting while provisional clasping cilia are at first present.
In these Infusoria the body is inclosed in a firm and sometimes brittle shell or carapace.
The most striking character of the Infusoria is the presence of vibratile cilia, which are variously arranged; in some entirely covering the body, irregularly or in regular rows, in others being situated at definite parts only.
In many of the Infusoria is a round or elongate granular body (figs.
In this family the bodies of the Infusoria are very soft, and without a skin or integument; they are also exceedingly minute, and will not admit the particles of indigo.
The sacculi may be filled artificially by mixing very fine indigo, or carmine, on a slide with the water in which the Infusoria are contained.
The Infusoria must be examined during life; for they are so altered by preservative liquids that they cannot be well preserved.
Christian Gottfried Ehrenberg, the naturalist and author of many works, of which those on infusoriamay be especially noted here.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "infusoria" in a variety of sentences. We hope that you will now be able to make sentences using this word.
