Columbia Encyclopedia

Search results

267 results found

apatite

(Encyclopedia)apatite ăpˈətīt [key], mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and purple. Apatite is...

Owyhee

(Encyclopedia)Owyhee ōˈwīhē [key], river, c.300 mi (480 km) long, rising in several branches in SW Idaho, N Nev., and SE Oreg. and flowing N across NE Oreg. to the Snake River; named in 1826 for two Hawaiian em...

Wasatch Range

(Encyclopedia)Wasatch Range wôˈsăch [key], part of the Rocky Mts., extending c.250 mi (400 km) south from SE Idaho to central Utah. Mt. Timpanogos, the highest peak (12,008 ft/3,660 m), is the site of Timpanogos...

Littré, Maximilien Paul Émile

(Encyclopedia)Littré, Maximilien Paul Émile mäksēmēlyăNˈ pōl āmēlˈ lētrāˈ [key], 1801–81, French lexicographer. Known as a positivist philosopher and as professor of history and geography at the Éc...

Salamanca, University of

(Encyclopedia)Salamanca, University of, at Salamanca, Spain; founded 1218 by Alfonso IX of León, reorganized 1254 by Alfonso X of Castile and León. It has faculties of philosophy, philology, geography and history...

Nordenskjöld, Nils Otto Gustaf

(Encyclopedia)Nordenskjöld, Nils Otto Gustaf, 1869–1928, Swedish geographer and explorer, nephew of Nils Adolf Erik Nordenskjöld. He headed an expedition to Patagonia (1895–97) and later explored the Klondike...

Abu al-Fida

(Encyclopedia)Abu al-Fida äˌbo͞o äl-fēˈdä, –fĭdäˈ [key], 1273–1331, Arab historian, b. Damascus. He fought against the Christians in the last period of the Crusades and later became (1310) governor of...

Rennell, James

(Encyclopedia)Rennell, James, 1742–1830, English cartographer, geographer, and oceanographer. He was surveyor general (1764–77) of Bengal and published A Bengal Atlas (1779). He constructed the first approximat...

Ptolemy

(Encyclopedia)Ptolemy (Claudius Ptolemaeus), fl. 2d cent. a.d., celebrated Greco-Egyptian mathematician, astronomer, and geographer. He made his observations in Alexandria and was the last great astronomer of ancie...

galena

(Encyclopedia)galena gəlēˈnə [key] or lead glance, lustrous, blue-gray mineral crystallizing usually in cubes, sometimes in octahedrons. It is the most important ore and the principal source of lead. It consist...