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riateness; as, the aptness of things to their end. The aptness of his quotations. J. R. Green.

A transparent, pale green variety of beryl, used as a gem. See Beryl.

Aqueous humor (Anat.), one the humors of the eye; a limpid fluid, occupying the space between the crystalline lens and the cornea. (See Eye.) -- Aqueous rocks (Geol.), those which are deposited from water and lie in strata, as opposed to volcanic rocks, which are of igneous origin; -- called also sedimentary rocks.…

Fit for plowing or tillage; -- hence, often applied to land which has been plowed or tilled.

Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.

A person appointed, or chosen, by parties to determine a controversy between them.

bitrate upon several reports;; to arbitrate in disputes among heighbors; to arbitrate between parties to a suit.

The hearing and determination of a cause between parties in controversy, by a person or persons chosen by the parties.

An evergreen tree of the cypress tribe, genus Thuja. The American species is the T. occidentalis.

A dwarf tree, one in size between a shrub and a tree; a treelike shrub. Bradley.

The strawberry tree, a genus of evergreen shrubs, of the Heath family. It has a berry externally resembling the strawberry; the arbute tree. Trailing arbutus (Bot.), a creeping or trailing plant of the Heath family (Epigæa repens), having white or usually rose- colored flowers with a delicate fragrance, growing in smal…

Usually a curved member made up of separate wedge-shaped solids, with the joints between them disposed in the direction of the radii of the curve; used to support the wall or other weight above an opening. In this sense arches are segmental, round (i. e., semicircular), or pointed.

hich a natural group of animals or plants or their systems of organs are assumed to have been constructed; as, the vertebrate archetype.

ll, propeller, etc. Archimedean screw, or Archimedes' screw, an instrument, said to have been invented by Archimedes, for raising water, formed by winding a flexible tube round a cylinder in the form of a screw. When the screw is placed in an inclined position, and the lower end immersed in water, by causing the screw…

An interstice or small space, as between the cracks of the surface in certain crustaceous lichens; or as between the fibers composing organs or vessels that interlace; or as between the nervures of an insect's wing.

tive tissue in which the fibers are loosely arranged with numerous spaces, or areolæ, between them.

The ethical theory which excludes all relations between virtue and happiness; the science of virtue; -- contrasted with eudemonics. J. Grote.

An acute and rugged crest of a mountain range or a subsidiary ridge between two mountain gorges.

illaceous schist or slate; clay slate. Its colors is bluish or blackish gray, sometimes greenish gray, brownish red, etc. -- Ar`gil*lit"ic, a.

hem.), one of a large class of organic substances, as the oils of bitter almonds, wintergreen, and turpentine, the balsams, camphors, etc., many of which have an aromatic odor. They include many of the most important of the carbon compounds and may all be derived from the benzene group, C6H6. The term is extended also…