Columbia Encyclopedia

(Encyclopedia) indicators, acid-base, organic compounds that, in aqueous solution, exhibit color changes indicative of the acidity or basicity of the solution. Common indicators include p-nitrophenol, which is color...

(Encyclopedia) Bakst, Lev Nikolayevich lyĕf nyĭkəlīˈəvyĭch bäkst [key], 1868–1924, Russian scene designer and painter. His original, imaginative style and brilliant color exerted a wide influence on costum...

(Encyclopedia) Everdingen, Allart van älˈärt vän āˈfərdĭngən [key], 1621–75, Dutch painter and etcher. Although he worked primarily in Haarlem and Amsterdam, the scenery of Sweden and Norway forms the sub...

(Encyclopedia)  CE5 Microscopic cross section of the leaf blade CE5 Types of leaves leaf, chief food-manufacturing organ of a plant, a lateral outgrowth of the growing point of stem. The typical leaf consist...

(Encyclopedia) Piloty, Karl von kärl fən pēlōˈtē [key], 1826–86, German historical painter; son of Ferdinand Piloty (1786–1844), a noted German lithographer. Karl first won recognition for his genre painti...

(Encyclopedia) Keppler, Joseph, 1838–94, American cartoonist, b. Vienna. Emigrating to America in 1867, he established with Adolph Schwarzmann in St. Louis a humorous German periodical, Puck (1871). Upon its failu...

(Encyclopedia) Red Rock chicken, the only chicken still popular to any large extent in the United States today for both meat and eggs. It resulted from a cross between a Rhode Island Red male and a Plymouth Rock fem...

(Encyclopedia) Brook, Alexander, 1898–1980, American painter, b. Brooklyn, N.Y. Brook's paintings, which are consistently realistic, include portraits, still-life subjects, landscapes, and figures. His color is su...

(Encyclopedia) curly-coated retriever, breed of large sporting dog conjectured to be descended from the water spaniel and the retrieving setter. It stands about 23 in. (58 cm) high at the shoulder and weighs about 6...

(Encyclopedia) Stella, Joseph, 1877–1946, American painter, b. Italy, emigrated to the United States in 1896. He studied at the Art Students League of New York City with William Chase and later in Italy and Paris....