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om, a species of mignonette (Reseda luteola), used for dyeing yellow; dyer's weed; dyer's rocket. -- Spanish broom. See under Spanish.

A cellular, flinty rock, used for mill stones. [Written also burrstone.]

channel or to point out the position of something beneath the water, as an anchor, shoal, rock, etc. Anchor buoy, a buoy attached to, or marking the position of, an anchor. -- Bell buoy, a large buoy on which a bell is mounted, to be rung by the motion of the waves. -- Breeches buoy. See under Breeches. -- Cable buo…

from the general level of the surrounding plain; -- applied to peculiar elevations in the Rocky Mountain region. The creek . . . passes by two remarkable buttes of red conglomerate. Ruxton.

s triacanthus of the Atlantic coast, the Epinephelus punctatus of the southern coast, the rock eel, and the kelpfish of New Zealand.

of certain bivalve mollusks, as the Pinna and Mytilus, by which they attach themselves to rocks, etc.

Meditarranean, the coast of California, etc. In California, some of them are also called rock bass and kelp salmon.

A yellow or smoky brown variety of rock crystal, or crystallized quartz, found esp, in the mountain of Cairngorm, in Scotland.

Of or pertaining to the lowest subdivision of the rocks of the Silurian or Molluscan age; -- sometimes described as inferior to the Silurian. It is named from its development in Cambria or Wales. See the Diagram under Geology.

stacea, including some of the most common shore crabs of Europe and North America, as the rock crab, Jonah crab, etc. See Crab.

and legal cap. (b) A coarse wrapping paper used for making caps to hold commodities. Cap rock (Mining), The layer of rock next overlying ore, generally of barren vein material. -- Flat cap, cap See Foolscap. -- Forage cap, the cloth undress head covering of an officer of soldier. -- Legal cap, a kind of folio writi…

n. See Age of acrogens, under Acrogen. -- Carboniferous formation (Geol.), the series of rocks (including sandstones, shales, limestones, and conglomerates, with beds of coal) which make up the strata of the Carboniferous age or period. See the Diagram under Geology.

hydrous chloride of potassium and magnesium, sometimes found associated with deposits of rock salt.

A garment resembling a long frock coat worn by the clergy of certain churches when officiating, and by others as the usually outer garment.

The closing subdivision of the Devonian age in America. The rocks of this period are well developed in the Catskill mountains, and extend south and west under the Carboniferous formation. See the Diagram under Geology.

A plume-shaped fossil, supposed to be a seaweed, characteristic of the lower Devonian rocks; as, the cauda galli grit. Gauda galli epoch (Geol.), an epoch at the begining of the Devonian age in eastern America, so named from the characteristic gritty sandstone marked with impressions of cauda galli. See the Diagram und…

A small island or ledge of rock in the water; a key. [Sp. Am.]

l (Zoöl.), a fossil coral of the genus Halysites, common in the middle and upper Silurian rocks. The tubular corallites are united side by side in groups, looking in an end view like links of a chain. When perfect, the calicles show twelve septa. -- Chain coupling. (a) A shackle for uniting lengths of chain, or connec…

A chain pulley, or sprocket wheel.

A deep opening made by disruption, as a breach in the earth or a rock; a yawning abyss; a cleft; a fissure. That deep, romantic chasm which slanted down the green hill. Coleridge.