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A sulcus parallel to, but some distance below, the horizontal limb of the fissure of Sylvius.

cels up to $50.00, and also for sending parcels C.O.D. The rates of postage vary with the distance. See Zone, below.

An instrument for including the number of steps in walking, and so ascertaining the distance passed over. It is usually in the form of a watch; an oscillating weight by the motion of the body causes the index to advance a certain distance at each step.

A surveyor's instrument for measuring distances. It consists of a wheel arranged to roll along over the ground, with an apparatus of clockwork, and a dial plate upon which the distance traveled is shown by an index. See Odometer.

The effect of distance upon the appearance of objects, by means of which the eye recognized them as being at a more or less measurable distance. Hence, aërial perspective, the assumed greater vagueness or uncertainty of outline in distant objects. Aërial perspective is the expression of space by any means whatsoever, s…

ted, resembling a pistol in form. -- Pistol shot. (a) The discharge of a pistol. (b) The distance to which a pistol can propel a ball.

The distance from center to center of any two adjacent teeth of gearing, measured on the pitch line; -- called also circular pitch.

The act or process of measuring, at the various distances from the surface of a block of marble, the surface of a future piece of statuary; also, a process used in cutting the statue from the artist's model.

ons are not fully understood. -- Polar circles (Astron. & Geog.), two circles, each at a distance from a pole of the earth equal to the obliquity of the ecliptic, or about 23º 28', the northern called the arctic circle, and the southern the antarctic circle. -- Polar clock, a tube, containing a polarizing apparatus,…

popular vote inclines." Milton. The commonly held in popular estimation are greatest at a distance. J. H. Newman.

ential when the force is directed to a fixed center and is inversely as the square of the distance from the center.

to overpower by weight; to exceed in weight; to overbalance. An inconsiderable weight, by distance from the center of the balance, will preponderate greater magnitudes. Glanvill.

The act of going, or state of being, before. [Obs.] The greater the distance, the greater the prevention. Bacon.

superiority in talents, beauty, wealth, rank, etc., which manifests itself in lofty airs, distance, reserve, and often in contempt of others. Those that walk in pride he is able to abase. Dan. iv. 37. Pride that dines on vanity sups on contempt. Franklin.

are drawn parallel to each other, and the parallels of latitude are straight lines whose distance from each other increases with their distance from the equator, so that at all places the degrees of latitude and longitude have to each other the same ratio as on the sphere itself. -- Oblique projection, a projection m…

The act of driving away or repelling; a keeping at a distance. [Obs.] Bp. Hall.

n the form of a triangle at spot. [Eng.] Altitude of a pyramid (Geom.), the perpendicular distance from the vertex to the plane of the base. -- Axis of a pyramid (Geom.), a straight line drawn from the vertex to the center of the base. -- Earth pyramid. (Geol.) See Earth pillars, under Earth. -- Right pyramid (Geom.…

another when distant from it 90º, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition. Quadrature of the moon (Astron.), the position of the moon when one half of the disk is illuminated. -- Quadrature of an orbit (Astron.), a point in an orbit which is at eit…

To compel to remain at a distance, or in a given place, without intercourse, when suspected of having contagious disease; to put under, or in, quarantine.

substitute for writing and figures, consisting of a main cord, from which hung at certain distances smaller cords of various colors, each having a special meaning, as silver, gold, corn, soldiers. etc. Single, double, and triple knots were tied in the smaller cords, representing definite numbers. It was chiefly used fo…