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s by astronomers called apparent magnitude. Reid. Apparent horizon, the circle which in a level plain bounds our view, and is formed by the apparent meeting of the earth and heavens, as distinguished from the rational horizon. -- Apparent time. See Time. -- Heir apparent (Law), one whose to an estate is indefeasible…

rry or advance near; to cause to approach. To approximate the inequality of riches to the level of nature. Burke.

A small dam to prevent free passage of water in an adit or level.

which the barometer stands at 760 millimeters, at a temperature of 0º Centigrade, at the level of the sea, and in the latitude of Paris. Sir W. Thomson.

The pressure or weight of the air at the sea level, on a unit of surface, or about 14.7 Ibs. to the sq. inch. Hydrogen was liquefied under a pressure of 650 atmospheres. Lubbock.

A square hall lighted from above, into which rooms open at one or more levels.

The reading of the leveling staff in its unchanged position when the leveling instrument has been taken to a new position; a sight directed backwards to a station previously occupied. Cf. Foresight, n., 3.

A mound, pile, or ridge of earth, raised above the surrounding level; hence, anything shaped like a mound or ridge of earth; as, a bank of clouds; a bank of snow. They cast up a bank against the city. 2 Sam. xx. 15.

der varying conditions is a measure of the change in the atmospheric pressure. At the sea level its ordinary height is about 30 inches (760 millimeters). See Sympiesometer. Nichol. Aneroid barometer. See Aneroid barometer, under Aneroid. -- Marine barometer, a barometer with tube contracted at bottom to prevent rapid…

umulation of water-worn stones, gravel, sand, and other shore deposits, above the present level of wave action, whether actually raised by elevation of the coast, as in Norway, or left by the receding waters, as in many lake and river regions.

A plat or level piece of ground in a garden, usually a little raised above the adjoining ground. "Beds of hyacinth and roses." Milton.

g stretch of flat ground, or a kind of natural terrace, near a lake or river. Bench mark (Leveling), one of a number of marks along a line of survey, affixed to permanent objects, to show where leveling staffs were placed. -- Bench of bishops, the whole body of English prelates assembled in council. -- Bench plane, a…

Any permanent mark to which other levels may be referred. Specif. : A horizontal mark at the water's edge with reference to which the height of tides and floods may be measured.

Befitting associates or attendants. [Obs.] With such accommodation and besort As levels with her breeding. Shak.

hout an opening for passage or light. See Blank door or window, under Blank, a. -- Blind level (Mining), a level or drainage gallery which has a vertical shaft at each end, and acts as an inverted siphon. Knight. -- Blind nettle (Bot.), dead nettle. See Dead nettle, under Dead. -- Blind shell (Gunnery), a shell cont…

A cavern in a cliff, at the water level, opening to the air at its farther extremity, so that the waters rush in with each surge and rise in a lofty jet from the extremity.

r different liquids, and for the same liquid under different pressures. For water, at the level of the sea, barometer 30 in., it is 212 º Fahrenheit; for alcohol, 172.96º; for ether, 94.8º; for mercury, about 675º. The boiling point of water is lowered one degree Fahrenheit for about 550 feet of ascent above the level…

To sight along an object or set of objects, to see if it or they be level or in line, as in carpentry, masonry, and surveying. Knight. Joiners, etc., bone their work with two straight edges. W. M. Buchanan.

A method of leveling a line or surface by sighting along the tops of two or more straight edges, or a range of properly spaced poles. See 3d Bone, v. t.

Rustic work, consisting of stones which seem to advance beyond the level of the building, by reason of indentures or channels left in the joinings. Gwilt.