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Brownian movement

(Encyclopedia)Brownian movement or motion, zigzag, irregular motion exhibited by minute particles of matter when suspended in a fluid. The effect has been observed in all types of colloidal suspensions (see colloid...

petal

(Encyclopedia)petal, one of the four basic parts of a flower, next innermost organ from the sepal. The whorl of petals is known collectively as the corolla [Lat.,=little crown]. The number of petals is usually cons...

Royal Academy of Arts

(Encyclopedia)Royal Academy of Arts, London, the national academy of art of England, founded in 1768 by George III at the instigation of Sir William Chambers and Benjamin West. Sir Joshua Reynolds was the Academy's...

Marion, Francis

(Encyclopedia)Marion, Francis mârˈēən [key], c.1732–1795, American Revolutionary soldier, known as the Swamp Fox, b. near Georgetown, S.C. He was a planter and Indian fighter before joining (1775) William Mou...

Rohan, Henri, duc de

(Encyclopedia)Rohan, Henri, duc de äNrēˈ dük də rôäNˈ [key], 1579–1638, French Protestant general; son-in-law of the duc de Sully. A leader of the Huguenots, Rohan took up arms against the French governme...

Bello, Sir Ahmadu

(Encyclopedia)Bello, Sir Ahmadu, 1910–66, Nigerian political, b. Rabbah (now in Sokoto State), NW Nigeria. A Fulani and descendent of Usuman dan Fodio, the founder of the Sokoto caliphate, he was a major figure i...

corn laws

(Encyclopedia)corn laws, regulations restricting the export and import of grain, particularly in England. As early as 1361 export was forbidden in order to keep English grain cheap. Subsequent laws, numerous and co...

Chase, Samuel

(Encyclopedia)Chase, Samuel, 1741–1811, political leader in the American Revolution, signer of the Declaration of Independence, associate justice of the U.S. Supreme Court (1796–1811), b. Somerset co., Md. A la...

Cheever, John

(Encyclopedia)Cheever, John, 1912–82, American author, b. Quincy, Mass. His expulsion from Thayer Academy was the subject of his first short story, published by the New Republic when he was 17. Many of his subseq...

Deane, Silas

(Encyclopedia)Deane, Silas, 1737–89, political leader and diplomat in the American Revolution, b. Groton, Conn. A lawyer and merchant at Wethersfield, Conn., he was elected (1772) to the state assembly and became...