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A provisional group in which are placed a number of low microscopic organisms of doubtful nature. Some are probably plants, others animals.

ticles, molecular granules, powdered inorganic substances, etc., which in form, size, and grouping resemble bacteria.

A group of cells resembling a stoma, but without any true aperture among them.

A group of pterodactyls destitute of teeth, as in the genus Pteranodon.

A group of parasitic Hymenoptera, including the ichneumon flies, which destroy the larvæ and pupæ of insects.

The strata of the Purbeck stone, or Purbeck limestone, belonging to the Oölitic group. See the Chart of Geology.

A division of opisthobranchiate mollusks having the branchiæ in a wreath or group around the anal opening, as in the genus Doris.

A set of four parts, things, or person; four things taken collectively; a group of four words, phrases, circumstances, facts, or the like. Delivered him to four quaternions of soldiers. Acts xii. 4. Ye elements, the eldest birth Of Nature's womb, that in quaternion run. Milton. The triads and quaternions with which he…

oyle. Quinary system (Zoöl.), a fanciful classification based on the hypothesis that each group contains five types.

; especially, such an arrangement of trees repeated indefinitely, so as to form a regular group with rows running in various directions.

A group of five notes to be played or sung in the time of four of the same species.

(Mus.) A group of five connected notes; a turn of five notes.

An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere.

diverging, like radii, from a common center or axis; as, a radiated structure; a radiated group of crystals.

Specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are conveniently regarded as playing the part of a single atom; a residue; -- called also a compound radical. Cf. Residue.

A group of Protozoa having both flagella and pseudopodia.

A French political group, also known as the Constitutional Right from its position in the Chambers, mainly monarchists who rallied to the support of the Republic in obedience to the encyclical put forth by Pope Leo XIII. in Feb., 1892.

ffinity to ranunculaceous plants. Ranal alliance (Bot.), a name proposed by Lindley for a group of natural orders, including Ranunculaceæ, Magnoliaceæ, Papaveraceæ, and others related to them.

One of a group of aquatic beetles having tarsi adapted for swimming. See Water beetle.

Serving or fitted to present the full characters of the type of a group; typical; as, a representative genus in a family.