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The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia. Chlorite slate, a schistose or slaty rock consisting of alumina, iron, and magnesia.

A group of fishes, characterized by cartilaginous fins and skeleton. It includes both ganoids (sturgeons, etc.) and selachians (sharks), but is now often restricted to the latter. [Written also Chondropterygia.]

Making Christ the center, about whom all things are grouped, as in religion or history; tending toward Christ, as the central object of thought or emotion. J. W. Chadwick.

Any chemical group or residue (as NO

An artificial, yellow, crystalline dye, C6H5N2.C6H3(NH2)2. Also, one of a group of dyestuffs resembling chrysoïdine proper.

One of the quinine group of alkaloids, found especially in red cinchona bark. It is a white crystalline substance, C19H22N2O, with a bitter taste and qualities similar to, but weaker than, quinine; -- sometimes called also cinchonidia.

One of the quinine group of alkaloids isomeric with and resembling cinchonidine; -- called also cinchonia.

American lower Silurian system. The rocks are well developed near Cincinnati, Ohio. The group includes the Hudson River and Lorraine shales of New york.

The group of Thysanura which includes Lepisma and allied forms; the bristletails. See Bristletail, and Lepisma.

A circular group of persons; a ring.

shell composed of several pieces. From the opening of the shell the animal throws out a group of curved legs, looking like a delicate curl, whence the name of the group. See Anatifa.

The lowest group of vertebrates; -- so called from the cirri around the mouth; the Leptocardia. See Amphioxus.

A group of individuals ranked together as possessing common characteristics; as, the different classes of society; the educated class; the lower classes.

The act of forming into a class or classes; a distibution into groups, as classes, orders, families, etc., according to some common relations or affinities. Artificial classification. (Science) See under Artifitial.

A group of beetles having club-shaped antennæ.

A cluster; a group; a thicket. A clump of shrubby trees. Hawthorne.

who answer the questions; -- so called because the players take sides in two "clumps" or groups, the "clump" which guesses the word winning the game.

A number of similar things collected together or lying contiguous; a group; as, a cluster of islands. "Cluster of provinces." Motley.

Like or related to the genus Clupeaster; -- applied to a group of flattened sea urchins, with a rosette of pores on the upper side.

A comprehensive group equivalent to the true Coelenterata, i.e., exclusive of the sponges. They are so named from presence of stinging cells (cnidae) in the tissues. See Coelenterata.