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One of the classes of Protozoa, including a large number of species, all of minute size.

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. It is used in polishing powder, and in the manufacture of dynamite.…

One of the Infusoria.

A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria.

An animal, invisible, or nearly so, to the naked eye. See Infusoria.

One of the minute bodies seen in the divided nucleoli of some Infusoria after conjugation.

An infusorian of the family Vorticellidæ, common in fresh-water ponds.

(Min.) An earthy substance, resembling fine flour. It is composed of the shells of infusoria, and in Lapland and Sweden is sometimes eaten, mixed with flour or ground birch bark, in times of scarcity. This name is also given to a white powdery variety of calcite.

whole or a part of the exterior. They are also found on some vegetable organisms. In the Infusoria, and many larval forms, they are locomotive organs.

One of the orders of Infusoria, characterized by having cilia. In some species the cilia cover the body generally, in others they form a band around the mouth.

An absorbent material; esp., in high explosives, the sawdust, infusorial earth, mica, etc., mixed with nitroglycerin to make a damp powder (dynamite, etc.) less dangerous to transport, and ordinarily explosive only by suitable fulminating caps.

To divide into two by natural growth or spontaneous action; as, infusoria duplicate themselves.

explosive substance consisting of nitroglycerin absorbed by some inert, porous solid, as infusorial earth, sawdust, etc. It is safer than nitroglycerin, being less liable to explosion from moderate shocks, or from spontaneous decomposition.

eper tints than the rest of the mass. Brande & C. -- Eye animalcule (Zoöl), a flagellate infusorian belonging to Euglena and related genera; -- so called because it has a colored spot like an eye at one end. -- Eye doctor, an oculist. -- Eye of a volute (Arch.), the circle in the center of volute. -- Eye of day, Ey…

An order of Infusoria, having one or two long, whiplike cilia, at the anterior end. It includes monads. See Infusoria, and Monad.

A division of ciliated Infusoria, having fine cilia all over the body, and a circle of larger ones around the anterior end.

A group of ciliated Infusoria, having cilia all over the body.

A division of ciliated Infusoria in which the cilia cover only the under side of the body.

Infusorial.

Siliceous earth; specifically, porous infusorial earth, used as an absorbent of nitroglycerin in the manufacture of dynamite.