Columbia Encyclopedia

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firing

(Encyclopedia)firing, process of treating clay or other plastic ceramic materials with heat to produce a hard, durable but brittle material such as pottery. Primitive potters baked their clay in an open fire, but f...

hardpan

(Encyclopedia)hardpan, condition of the soil or subsoil in which the soil grains become cemented together by such bonding agents as iron oxide and calcium carbonate, forming a hard, impervious mass. It is disadvant...

pencil

(Encyclopedia)pencil, pointed implement used in writing or drawing to apply graphite or a similar colored solid to any surface, especially paper. From prehistoric times lumps of colored earth or chalk were used as ...

Rogers, John, American sculptor

(Encyclopedia)Rogers, John, 1829–1904, American sculptor, b. Salem, Mass. Trained as an engineer, he was forced by failing eyesight to work as a machinist. He began modeling in clay as a pastime and studied sculp...

Frelinghuysen, Theodore

(Encyclopedia)Frelinghuysen, Theodore, 1787–1862, American politician and educator, b. Franklin, N.J. Admitted to the bar in 1808, he practiced law in Newark and soon gained political prominence. As U.S. senator ...

silt

(Encyclopedia)silt, predominantly quartz mineral particles that are between sand size and clay size, i.e., between 1⁄16 and 1⁄256 mm (1⁄406 –1⁄6502 in.) in diameter. Silt, like clay and sand, is a product...

golem

(Encyclopedia)golem gōˈləm [key] [Heb.,=an undeveloped lump], in medieval Jewish legend, an automatonlike servant made of clay and given life by means of a charm, or shem [Heb.,=name, or the name of God]. Golems...

pottery

(Encyclopedia)pottery, the baked-clay wares of the entire ceramics field. For a description of the nature of the material, see clay. American art pottery flourished in the first half of the 20th cent., with wor...

Crittenden, John Jordan

(Encyclopedia)Crittenden, John Jordan, 1787–1863, U.S. public official, b. Woodford co., Ky. A Kentucky legislator (1811–17), Crittenden entered the U.S. Senate (1817–19) but resigned to resume state offices....

Whig party

(Encyclopedia)Whig party, one of the two major political parties of the United States in the second quarter of the 19th cent. By the time Fillmore had succeeded to the presidency, the disintegration of the party ...