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xis of the instrument, having the eyepiece at the pivot and in the center of the altitude circle, so that the eye has convenient access to both at the same time. -- Universal joint (Mach.), a contrivance used for joining two shafts or parts of a machine endwise, so that the one may give rotary motion to the other when…

lower when similar parts are of different size and shape, or when the parts of successive circles differ in number. See Symmetry.

A circumference; a circle; a ring. The inclusive verge Of golden metal that must round my brow. Shak.

b; as, a vertical line. Vertical angle (Astron. & Geod.), an angle measured on a vertical circle, called an angle of elevation, or altitude, when reckoned from the horizon upward, and of depression when downward below the horizon. -- Vertical anthers (Bot.), such anthers as stand erect at the top of the filaments. --…

A circle either of leaves or flowers about a stem at the same node; a whorl. [Written also verticel.]

dish bladder.] (Eccl. Art) A glory, or aureole, of oval shape, or composed of two arcs of circles usually represented as surrounding a divine personage. More rarely, an oval composed of two arcs not representing a glory; a solid oval, etc.

Cerianthus. These animals have a long, smooth body tapering to the base, and two separate circles of tentacles around the mouth. They form a tough, flexible, feltlike tube with a smooth internal lining, in which they dwell, whence the name.

ing a whirling or circular motion tending to form a cavity or vacuum in the center of the circle, and to draw in towards the center bodies subject to its action; the form assumed by a fluid in such motion; a whirlpool; an eddy.

other genera of the family Vorticellidæ. They have a more or less bell-shaped body with a circle of vibrating cilia around the oral disk. Most of the species have slender, contractile stems, either simple or branched.

I must cool a little, and watch my opportunity. Landor. In lazy mood I watched the little circles die. Longfellow.

rotatory motion; to cause to turn or revolve; to cause to gyrate; to make or perform in a circle. "The beetle wheels her droning flight." Gray. Now heaven, in all her glory, shone, and rolled Her motions, as the great first mover's hand First wheeled their course. Milton.

An eddy or vortex of water; a place in a body of water where the water moves round in a circle so as to produce a depression or cavity in the center, into which floating objects may be drawn; any body of water having a more or less circular motion caused by its flowing in an irregular channel, by the coming together of…

rops, as Zosterops palpebrosus of India, and Z. coerulescens of Australia. The eyes are encircled by a ring of white feathers, whence the name. Called also bush creeper, and white-eyed tit.

A circle of two or more leaves, flowers, or other organs, about the same part or joint of a stem.

To entwist; to infold; to encircle. Sleep, and I will wind thee in arms. Shak.

To surround with anything twisted or convolved; to encircle; to infold. Each wreathed in the other's arms. Shak. Dusk faces with withe silken turbants wreathed. Milton. And with thy winding ivy wreathes her lance. Dryden.

breviation used with the letters separate or, oftener, in a monogram, often inclosed in a circle, as a symbol or emblem of Christ. It use as an emblem was introduced by Constantine the Great, whence it is known as the Constantinian symbol, or monogram. See Labarum.

turns both on a vertical and a horizontal axis, is provided with a graduated vertical semicircle, and a level for setting it to a given zenith distance, and with a micrometer for measuring the difference of the zenith distances of the two stars.

id of the electricity of the zincous plate in connection with a copper plate in a voltaic circle; also, designating the positive pole. [Obs.]

To girdle; to encircle. [R.] Keats.