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in Great Britain. (b) A name anciently given to the Sweet William. Dr. Prior. -- London rocket (Bot.), a cruciferous plant (Sisymbrium Irio) which sprung up in London abundantly on the ruins of the great fire of 1667.

fixedness; to make less dense or compact; as, to loosen a string, or a knot; to loosen a rock in the earth. After a year's rooting, then shaking doth the tree good by loosening of the earth. Bacon.

rasshopper (Zoöl.), a large, stout, clumsy grasshopper; esp., Brachystola magna, from the Rocky Mountain plains, and Romalea microptera, which is injurious to orange trees in Florida. -- Lubber's hole (Naut.), a hole in the floor of the "top," next the mast, through which sailors may go aloft without going over the ri…

Europe and America. -- Tree lungwort, a lichen (Sticta pulmonacea) growing on trees and rocks. The thallus is lacunose, and in appearance somewhat resembles the lungs, for diseases of which it was once thought a remedy.

d rare fruits are luxuries; in some countries ice is a great luxury. He cut the side of a rock for a garden, and, by laying on it earth, furnished out a kind of luxury for a hermit. Addison.

nus of spiral gastropod shells, often of large size, characteristic of the lower Silurian rocks.

lten matter within the earth, the source of the material of lava flows, dikes of eruptive rocks, etc.

A spotted trout (Salvelinus malma), inhabiting Northern America, west of the Rocky Mountains; -- called also Dolly Varden trout, bull trout, red-spotted trout, and golet.

, soft, light-colored fur. It is found in the mountains of Central Asia, and dwells among rocks.

A tree of the genus Acer, including about fifty species. A. saccharinum is the rock maple, or sugar maple, from the sap of which sugar is made, in the United States, in great quantities, by evaporation; the red or swamp maple is A. rubrum; the silver maple, A. dasycarpum, having fruit wooly when young; the striped mapl…

and green, and frequently beautifully veined or clouded. The name is also given to other rocks of like use and appearance, as serpentine or verd antique marble, and less properly to polished porphyry, granite, etc.

crystalline structure, but having no regular form; as, a mineral occurs massive. Massive rock (Geol.), a compact crystalline rock not distinctly schistone, as granite; also, with some authors, an eruptive rock.

ight ot substance; ponderous; bulky and heavy; weight; heavy; as, a massy shield; a massy rock. Your swords are now too massy for your strengths, And will not be uplifted. Shak. Yawning rocks in massy fragments fly. Pope.

decorated chamber, sometimes of solid masonry), and connected with a mummy chamber in the rock beneath.

A large extinct genus of labyrinthodonts, found in the European Triassic rocks.

A goatlike antelope (Haplocerus montanus) which inhabits the Rocky Mountains, frequenting the highest parts; -- called also mountain goat.

lga of any kind that produces blackish spores, or seed dust. The melanosperms include the rockweeds and all kinds of kelp. -- Mel`a*no*sper"mous, a.

Any one of several dark-colored augitic, eruptive rocks allied to basalt.

lack grouper (E. nigritas), distinguished as Me"ro de lo al"to, and a species called also rock hind, distinguished as Me"ro ca*brol"la.

Pertaining to, produced by, or exhibiting, certain changes which minerals or rocks may have undergone since their original deposition; -- especially applied to the recrystallization which sedimentary rocks have undergone through the influence of heat and pressure, after which they are called metamorphic rocks.…