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Demuth, Charles

(Encyclopedia)Demuth, Charles dāˈmo͞oth [key], 1883–1935, American watercolor painter, b. Lancaster, Pa. At the age of 20 he began his art study under William Chase at the Pennsylvania Academy of the Fine Arts...

tanzanite

(Encyclopedia)tanzanite tănzănˈīt [key], beautiful gemstone discovered in 1967 in the Umba Valley near the Usambara Mts. in Tanzania, a precious variety of the mineral zoisite, a calcium aluminum silicate. Zois...

turquoise

(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

Merian, Matthäus

(Encyclopedia)Merian, Matthäus māˈrēän [key], the elder, 1593–1650, Swiss engraver and draftsman. In Frankfurt am Main from c.1623, he produced, with help from assistants, numerous engravings of battles and...

Van Allsburg, Chris

(Encyclopedia)Van Allsburg, Chris, 1949–, American writer and illustrator of children's books, b. East Grand Rapids, Mich., B.F.A. Univ. of Michigan, 1972, M.F.A. Rhode Island School of Design, 1975. Originally a...

Surtees, Robert Smith

(Encyclopedia)Surtees, Robert Smith sûrˈtēz [key], 1803–64, English novelist. He created John Jorrocks, the sporting grocer, who appears in Jorrocks' Jaunts and Jollities (1838), a series of humorous sketches ...

Ladd-Franklin, Christine

(Encyclopedia)Ladd-Franklin, Christine, 1847–1930, American scientist, b. Windsor, Conn., grad. Vassar 1869. She was the first woman student to enter Johns Hopkins (1878), her special studies being directed towar...

sky

(Encyclopedia)sky, apparent dome over the earth, background of the clouds, sun, moon, and stars. The blue color of the clear daytime sky results from the selective scattering of light rays by the minute particles o...

Francis, Sam

(Encyclopedia)Francis, Sam, 1923–94, American painter, b. San Mateo, Calif. Educated in medicine, Francis began painting while recovering from an injury received in World War II. His mural-sized paintings are sta...

Dallas

(Encyclopedia)Dallas, city (2020 pop. 1,304,379), seat of Dallas co., N Tex., on the Trinity River near the junction of its three forks; inc. 1871. The third largest ...
 

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