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pitchblende

(Encyclopedia)pitchblende pĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide (UO2), it usually cont...

Wolcott, Oliver, signer of the Declaration of Independence

(Encyclopedia)Wolcott, Oliver, 1726–97, political leader in the American Revolution, signer of the Declaration of Independence, b. South Windsor (then in Windsor), Conn.; son of Roger Wolcott. He fought in King G...

Kisangani

(Encyclopedia)Kisangani kēsangäˈnē [key], formerly Stanleyville, city (1996 est. pop. 500,000), capital of Tshopo prov., N central Congo (Kinshasa), a port on the Congo River. The city is the terminus of steame...

Hutchins, Robert Maynard

(Encyclopedia)Hutchins, Robert Maynard, 1899–1977, American educator, b. Brooklyn, N.Y., studied at Oberlin College, grad. Yale, 1921, taught in the Yale law school (1925–27), and served as dean (1927–29). He...

Orientale

(Encyclopedia)Orientale ōt-zäērˈ [key], former province, c.204,000 sq mi (528,360 sq km), N Congo (Kinshasa). Kisangani was the capital. Orientale bordered the Central African Republic and South Sudan on the no...

Amiens, Treaty of

(Encyclopedia)Amiens, Treaty of, 1802, peace treaty signed by France, Spain, and the Batavian Republic on the one hand and Great Britain on the other. It is generally regarded as marking the end of the French Revol...

Juba, city, South Sudan

(Encyclopedia)Juba jo͞oˈbə [key], city (1993 pop. 114,980), capital and largest city of South Sudan, a port on the White Nile in the southern part of the country. It is the southern terminus of river traffic in ...

San Marcos, University of

(Encyclopedia)San Marcos, University of, at Lima, Peru; the first university in South America; founded 1551 by the Spanish king Charles I (Holy Roman Emperor Charles V) and recognized by papal bull in 1571; closed ...

Adams, John, 2d President of the United States

(Encyclopedia)Adams, John, 1735–1826, 2d President of the United States (1797–1801), b. Quincy (then in Braintree), Mass., grad. Harvard, 1755. John Adams and his wife, Abigail Adams, founded one of the most di...

Africa

(Encyclopedia)CE5 Africa ăfˈrĭkə [key], second largest continent (2015 est. pop. 1,194,370,000), c.11,677,240 sq mi (30,244,050 sq km) including adjacent islands. Broad to the north (c.4,600 mi/7,400 km wide...