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Infusorial   Listen
adjective
Infusorial  adj.  (Zool.) Belonging to the Infusoria; composed of, or containing, Infusoria; as, infusorial earth.
Infusorial earth (Geol.), a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms; also called diatomaceous earth, kieselguhr, and diatomite. It is used in polishing powder, and in the manufacture of dynamite.






Collaborative International Dictionary of English 0.48








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"Infusorial" Quotes from Famous Books



... be plants. They abound in rivulets, lakes, and ponds in England and other countries, and are termed Diatomaceae by those naturalists who believe in their vegetable origin. The subject alluded to has long been well- known in the arts, under the name of infusorial earth or mountain meal, and is used in the form of powder for polishing stones and metals. It has been procured, among other places, from the mud of a lake at Dolgelly, in North Wales, and from Bilin, ...
— The Student's Elements of Geology • Sir Charles Lyell

... Chapter V.—Curious pumiceous infusorial mudstone (page 118) of Patagonia; climate of old Tertiary period, page 134. The subject which has been most fertile in my mind is the discussion from page 135 to end of chapter on the accumulation of fossiliferous deposits. (556/3. ...
— More Letters of Charles Darwin Volume II - Volume II (of II) • Charles Darwin

... century, the naturalist Oken hazarded the assertion: "The human mind is a memberment of infusorial sensation,"[7-1] a phrase which has been the guiding principle of scientific psychology ever since. That in the course of this memberment or growth wholly new faculties are acquired, is conceded. As the union of two inorganic substances may yield a third different in every respect ...
— The Religious Sentiment - Its Source and Aim: A Contribution to the Science and - Philosophy of Religion • Daniel G. Brinton

... from the outside of the vessel, up through the mercury into the infusion; so that he thus had it exposed to a perfectly pure atmosphere of the same constituents as the external air. Of course, he expected he would get no infusorial animalcules at all in that infusion; but, to his great dismay and discomfiture, he found he almost always did ...
— Darwiniana • Thomas Henry Huxley

... digestive organs, and circulatory system of animals, of adaptations of fishes to the watery element. But we must mention an outstanding feature of all animal life, the evident likeness of plan upon which the entire kingdom of sentient life is constructed. From amoeba and other infusorial animals of simplest structure, through coral and oyster, bird, reptile, to mammals, there is an evident gradation, many structures being represented in entire great groups of living beings, such as the air-breathing lung. Here is a grand plan of animal life, which permits us to ...
— Evolution - An Investigation and a Critique • Theodore Graebner



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