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chlorofluorocarbons

(Encyclopedia)chlorofluorocarbons klōrˌəflo͝orˈəkärˌbənz, klôrˌ– [key] (CFCs), organic compounds that contain carbon, chlorine, and fluorine atoms. CFCs are highly effective refrigerants that were deve...

Citrine, Walter McLennan Citrine, 1st Baron

(Encyclopedia)Citrine, Walter McLennan Citrine, 1st Baron sĭtrēnˈ [key], 1887–1983, English trade union leader. An electrician, he became district secretary of the electrical trade union in 1914 and rose to be...

Green, Samuel Swett

(Encyclopedia)Green, Samuel Swett, 1837–1918, American librarian, b. Worcester, Mass. Green was librarian of the Worcester, Mass., Free Public Library (1871–1909) and was a member of the Free Public Library Com...

Drummond, Henry, 1851–97, Scottish clergyman and author

(Encyclopedia)Drummond, Henry, 1851–97, Scottish clergyman and author, educated at the Univ. of Edinburgh. He was a minister of the Free Church and from 1877 a lecturer on science in Free Church College, Glasgow....

Edwards, Edward

(Encyclopedia)Edwards, Edward, 1812–86, English library pioneer. As assistant from 1839 in the British Museum, he helped Sir Anthony Panizzi draw up the rules for the catalog. Edwards collected library statistics...

Lane, James Henry

(Encyclopedia)Lane, James Henry, 1814–66, American politician, called the “liberator of Kansas.” He was probably born in Lawrenceburg, Ind., where he practiced law. Lane commanded an Indiana regiment in the M...

Kroonstad

(Encyclopedia)Kroonstad kro͞onˈstät [key], city, part and seat of Moqhaka local municipality, Free State prov., E central South Africa, on the Vals River. It is an agricultural and industrial center. There are g...

Pretorius, Martinus Wessel

(Encyclopedia)Pretorius, Martinus Wessel prātôrˈēəs [key], 1818?–1901, Boer (Afrikaner) statesman; son of Andries Pretorius. In 1857 he was elected the first president of the South African Republic (the Tra...

Homestead Act

(Encyclopedia)Homestead Act, 1862, passed by the U.S. Congress. It provided for the transfer of 160 acres (65 hectares) of unoccupied public land to each homesteader on payment of a nominal fee after five years of ...

Julian, George Washington

(Encyclopedia)Julian, George Washington jo͞olˈyən [key], 1817–99, American abolitionist, U.S. Representative from Indiana (1849–51, 1861–71), b. Wayne co., Ind. Elected to the Indiana legislature as a Whig...