Columbia Encyclopedia

(Encyclopedia) Whipple, Amiel Weeks, 1818–63, American soldier and topographical engineer, b. Greenwich, Mass. He became (1841) a topographical engineer in the U.S. army and engaged in surveying the U.S. borders w...

(Encyclopedia) disk plow or disk, farm implement employing a row or rows of concave circular steel disks that cut and pitch the soil in a way somewhat similar to a moldboard plow. It can be used in many situations w...

(Encyclopedia) Donald, David Herbert, 1920–2009, American historian, b. Goodman, Miss. After receiving his Ph.D. from the Univ. of Illinois in 1946, he taught at Columbia (1947–49; 1951–59), Smith (1949–51),...

(Encyclopedia) Borgese, Giuseppe Antonio jo͞ozĕpˈpā äntōˈnyō bōrjāˈzā [key], 1882–1952, Italian-American author, b. near Palermo, Ph.D. Univ. of Florence, 1903. From 1910 to 1931 he taught at the unive...

(Encyclopedia) Cooperative Extension Service, in the United States, former agency of the Dept. of Agriculture, est. 1914 by the Smith-Lever Act. Designed to provide Americans with the understanding and skills essent...

(Encyclopedia) Quesnay, François fräNswäˈ kĕnāˈ [key], 1694–1774, French economist, founder of the physiocratic school. A physician to Louis XV, he did not begin his economic studies until 1756, when he wro...

(Encyclopedia) Ross, Sir John, 1777–1856, British arctic explorer and rear admiral. In 1818 he went in search of the Northwest Passage but turned back after exploring Baffin Bay. Financed by Sir Felix Booth, he co...

(Encyclopedia) Say, Jean Baptiste zhäN bätēstˈ sā [key], 1767–1832, French economist. In A Treatise on Political Economy (1803, tr. from the 4th ed. 1821) he effectively reorganized and popularized the theori...

(Encyclopedia) Terbrugghen, Hendrick hĕnˈdrĭk tĕrbro͝ogˈhən [key], 1588–1629, Dutch painter, a leading member of the Utrecht school. He was a pupil of the history painter Bloemaert before living (c.1604–1...

(Encyclopedia) planter, farm or garden implement that places propagating material such as seeds or seedlings into the ground, usually in rows. Broadcasting, i.e., scattering seed in all directions, by hand followed ...