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green vitriol

(Encyclopedia)green vitriol, the heptahydrate of ferrous sulfate. ...

Green, Matthew

(Encyclopedia)Green, Matthew, 1696–1737, English poet. His one important poem, The Spleen (1737), marked by its wit, was in praise of the contemplative life. ...

Green Revolution

(Encyclopedia)Green Revolution, term referring mainly to dramatic increases in cereal-grain yields in many developing countries beginning in the late 1960s, due largely to use of genetically improved varieties. Beg...

green algae

(Encyclopedia)green algae: see algae; Chlorophyta. ...

Gretna Green

(Encyclopedia)Gretna Green, village, Dumfries and Galloway, S Scotland, on the border with England. It was famous as a place of runaway marriages from 1754, when English marriage law was tightened, until 1856, when...

Hill, James Jerome

(Encyclopedia)Hill, James Jerome, 1838–1916, American railroad builder, b. Ontario, Canada. He went to St. Paul, Minn., in 1856. He became a partner of Norman Kittson in a steamboat line and, with Kittson, Donald...

Hill, Archibald Vivian

(Encyclopedia)Hill, Archibald Vivian, 1886–1977, British physiologist, B.A. Cambridge, 1909. Hill was a professor at Manchester Univ. (1920–23) and University College, London (1923–25) before becoming a resea...

Green, Hetty

(Encyclopedia)Green, Hetty, 1835–1916, American financier, b. Henrietta Howland Robinson, New Bedford, Mass. She inherited a large fortune from her father and invested it so shrewdly that she was considered the g...

Hill, A. P.

(Encyclopedia)Hill, A. P. (Ambrose Powell Hill), 1825–65, Confederate general in the American Civil War, b. Culpeper, Va. He served briefly in the Mexican War and had a varied army career until he resigned in Mar...

Hill, Sir Rowland

(Encyclopedia)Hill, Sir Rowland, 1795–1879, English educator, inventor, and postal reformer. He introduced the system of self-government in his school at Hazelwood in Birmingham. In his Plans for the Government a...