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serpentine

(Encyclopedia)serpentine sûrˈpəntēn, –tīn [key], hydrous silicate of magnesium. It occurs in crystalline form only as a pseudomorph having the form of some other mineral and is generally found in the form of...

rhenium

(Encyclopedia)rhenium rēˈnēəm [key], metallic chemical element; symbol Re; at. no. 75; at. wt. 186.207; m.p. about 3,180℃; b.p. about 5,625℃; sp. gr. 21.02 at 20℃; valence −1, +2, +3, +4, +5, +6, or +7....

vanadium

(Encyclopedia)vanadium vənāˈdēəm [key], metallic chemical element; symbol V; at. no. 23; at. wt. 50.9415; m.p. about 1,890℃; b.p. 3,380℃; sp. gr. about 6 at 20℃; valence +2, +3, +4, or +5. Vanadium is a ...

Munro, Wilfred Harold

(Encyclopedia)Munro, Wilfred Harold, 1849–1934, American historian and educator, b. Bristol, R.I.; brother of Dana Carleton Munro. From 1870 to 1871 he was a master at De Veaux College, Niagara Falls, N.Y., where...

Haskins, Charles Homer

(Encyclopedia)Haskins, Charles Homer, 1870–1937, American historian, an authority on medieval history, b. Meadville, Pa. At Harvard (1902–31) he was professor and dean of graduate studies (1908–24); in the la...

Adams, James Truslow

(Encyclopedia)Adams, James Truslow trŭˈslō [key], 1878–1949, American historian, b. Brooklyn, N.Y. The Founding of New England (1921), which brought him the Pulitzer Prize in history for 1922, was followed by ...

Bury, John Bagnell

(Encyclopedia)Bury, John Bagnell băgˈnəl byo͝oˈrē [key], Irish historian, an authority on the Byzantine Empire. He was professor at the Univ. of Dublin from 1893 to 1902 and at Cambridge from 1902. Bury consi...

Milman, Henry Hart

(Encyclopedia)Milman, Henry Hart, 1791–1868, English clergyman, poet, and historian, dean of St. Paul's Cathedral, London, from 1849. He was the author of several dramatic poems as well as some important historic...

Croce, Benedetto

(Encyclopedia)Croce, Benedetto bānādĕtˈtō krôˈchā [key], 1866–1952, Italian philosopher, historian, and critic. He lived mostly in Naples, devoting himself to studying and writing. He founded and edited (...

Ranke, Leopold von

(Encyclopedia)Ranke, Leopold von lāˈōpôlt fən rängˈkə [key], 1795–1886, German historian, generally recognized as the father of the modern objective historical school. He applied and elaborated Barthold N...