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A genus of marine Bryozoa in which the tubular cells have a centralchitinous axis and the tentacles are borne on a bilobed lophophore. It is the type of the order Pterobranchia, or Podostomata

he hand laid upon its surface. It is caused in the production of rhonchi in the bronchial tubes.

An instrument, acting on the principle of Pitot's tube, for measuring the velocity of a fluid current, the speed of a ship, etc.

n. -- Ring blackbird (Zoöl.), the ring ousel. -- Ring canal (Zoöl.), the circular water tube which surrounds the esophagus of echinoderms. -- Ring dotterel, or Ringed dotterel. (Zoöl.) See Dotterel, and Illust. of Pressiroster. -- Ring dropper, a sharper who pretends to have found a ring (dropped by himself), and t…

rays produced when cathode rays strike upon surface of a solid (as the wall of the vacuum tube). Röntgen rays are noted for their penetration of many opaque substances, as wood and flesh, their action on photographic plates, and their fluorescent effects. They were called X rays by their discoverer, W. K. Röntgen. They…

The underground portion of a plant, whether a true root or a tuber, a bulb or rootstock, as in the potato, the onion, or the sweet flag.

e or scale; a rotate corolla, i.e., a monopetalous corolla with a flattish border, and no tube or a very short one.

In a rough manner; rudely; roughly. Sleeping rough on the trenches, and dying stubbornly in their boats. Sir W. Scott.

c of a circle or an ellipse, or a portion of the surface of a sphere; rotund; bulging; protuberant; not angular or pointed; as, a round arch; round hills. "Their round haunches gored." Shak.

A stubble field left unplowed till late in the autumn, that it may be cropped by cattle. Turn your cows, that give milk, into your rowens till snow comes. Mortimer.

rge ruff of erectile feathers, variable in their colors, on the neck, and yellowish naked tubercles on the face. They are polygamous, and are noted for their pugnacity in the breeding season. The female is called reeve, or rheeve.

ushlike plants with hard nutlike fruits. (b) A name for several species of Cyperus having tuberous roots. -- Rush broom, an Australian leguminous plant (Viminaria denudata), having long, slender branches. Also, the Spanish broom. See under Candle. -- Rush grass, any grass of the genus Vilfa, grasses with wiry stems a…

A genus of tubiculous annelids having a circle of plumose gills around head.

se from a man on his own side; -- distinguished from touchback. See Touchdown. -- Safety tube (Chem.), a tube to prevent explosion, or to control delivery of gases by an automatic valvular connection with the outer air; especially, a bent funnel tube with bulbs for adding those reagents which produce unpleasant fumes…

The dried tubers of various species of Orchis, and Eulophia. It is used to make a nutritious beverage by treating the powdered preparation with hot water. U. S. Disp.

A genus of transparent, tubular, free-swimming oceanic tunicates found abundantly in all the warmer latitudes. See Illustration in Appendix.

The Eustachian tube, or the Fallopian tube.

Tubular, with a speading border. See Hypocraterimorphous.

is often used as bait by fishermen. See Illust. under Anomura. -- Sand canal (Zoöl.), a tubular vessel having a calcareous coating, and connecting the oral ambulacral ring with the madreporic tubercle. It appears to be excretory in function. -- Sand cock (Zoöl.), the redshank. [Prov. Eng.] -- Sand collar. (Zoöl.) Sa…

Any species of annelids of the genus Sabellaria. They construct firm tubes of agglutinated sand on rocks and shells, and are sometimes destructive to oysters.