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sulphur, forming a yellow powder, sometimes used by mediæval artists, for the sake of economy, instead of gold. Fairholt.

At or toward the caudal extremity; caudal; -- in human anatomy often used for dorsal.

wers, found in the Western prairies. -- Prairie dog (Zoöl.), a small American rodent (Cynomys Ludovicianus) allied to the marmots. It inhabits the plains west of the Mississippi. The prairie dogs burrow in the ground in large warrens, and have a sharp bark like that of a dog. Called also prairie marmot. -- Prairie gr…

(Zoöl.), any one of several species of South American burrowing rodents belonging to Ctenomys and allied genera. The hair is usually intermingled with sharp spines.

A small European lamprey (Petromyzon branchialis); -- called also prid, and sandpiper.

rticularly of money; excessive liberality; profusion; waste; -- opposed to frugality, economy, and parsimony."The prodigality of his wit." Dryden.

h of learning; as a professor of theology, of botany, of mathematics, or of political economy.

Prudence in the management of one's concerns; economy; frugality. It is a high point of providence in a prince to cast an eye rather upon actions than persons. Quarles.

The quality or state of being provident; carefulness; prudence; economy.

dy; office; charge; jurisdiction; sphere. The woman'sprovince is to be careful in her economy, and chaste in her affection. Tattler.

nt; wisdom in the way of caution and provision; discretion; carefulness; hence, also, economy; frugality. Prudence is principally in reference to actions to be done, and due means, order, seasons, and method of doing or not doing. Sir M. Hale. Prudence supposes the value of the end to be assumed, and refers only to the…

other two sides. -- Pythagorean system (Astron.), the commonly received system of astronomy, first taught by Pythagoras, and afterward revived by Copernicus, whence it is also called the Copernican system. -- Pythagorean letter. See Y.

asuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90º, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal d…

The four "liberal arts," arithmetic, music, geometry, and astronomy; -- so called by the schoolmen. See Trivium.

Paphanus sativus); also, the whole plant. Radish fly (Zoöl.), a small two-winged fly (Anthomyia raphani) whose larvæ burrow in radishes. It resembles the onion fly. -- Rat-tailed radish (Bot.), an herb (Raphanus caudatus) having a long, slender pod, which is sometimes eaten. -- Wild radish (Bot.), the jointed charloc…

animals or vegetables to a class or classes; to reduce a series of observations in astronomy; to reduce language to rules.

öl.), the Florida gallinule. -- Rice mouse (Zoöl.), a large dark-colored field mouse (Calomys palistris) of the Southern United States. -- Rice paper, a kind of thin, delicate paper, brought from China, - - used for painting upon, and for the manufacture of fancy articles. It is made by cutting the pith of a large he…

Misty; gloomy. [Obs.] Light thickens, and the crow Makes wing to the rooky wood. Shak.

Spacious; roomy. [Obs.] No roomer harbour in the place. Chaucer.

Abounding with room or rooms; roomy. "A roomful house." [R.] Donne.