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Zimmermann note

(Encyclopedia)Zimmermann note, secret telegram sent on Jan. 16, 1917, by German foreign secretary Arthur Zimmermann to Count Johann von Bernstorff, the German ambassador to the United States. In it Zimmermann said ...

olivine

(Encyclopedia)olivine ŏlĭvˈēn [key], an iron-magnesium silicate mineral, (Mg,Fe)2SiO4, crystallizing in the orthorhombic system. It is a common constituent of magnesium-rich, silica-poor igneous rocks; metamorp...

Tohono O'Odham

(Encyclopedia)Tohono O'Odham păpˈəgōˌ, päˈ– [key], Native North Americans speaking a language that belongs to the Uto-Aztecan branch of the Aztec-Tanoan linguistic stock (see Native American languages) and...

Geronimo

(Encyclopedia)Geronimo jərŏnˈəmōˌ [key], c.1829–1909, leader of a Chiricahua group of the Apaches, b. Arizona. From his youth he participated in the forays of Cochise, Victorio, and other Apache leaders. Wh...

garnet

(Encyclopedia)garnet, name applied to a group of isomorphic minerals crystallizing in the cubic system. They are used chiefly as gems and as abrasives (as in garnet paper). The garnets are double silicates; one of ...

Smith, Vernon Lomax

(Encyclopedia)Smith, Vernon Lomax, 1927–, American economist, b. Wichita, Kans., Ph.D. Harvard, 1955. He has taught at Purdue Univ. (1955–67), the Univ. of Massachusetts (1968–75), the Univ. of Arizona (1975�...

turquoise

(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

Ostrom, Elinor Awan

(Encyclopedia)Ostrom, Elinor Awan, 1933–2012, American political economist, b. Los Angeles, Ph.D. Univ. of California, Los Angeles, 1965. She was on the faculty of the Univ. of Indiana, Bloomington, from 1965 unt...

MacCracken, Henry Mitchell

(Encyclopedia)MacCracken, Henry Mitchell, 1840–1918, American educator, b. Oxford, Ohio, grad. Miami Univ. (Ohio), 1857. After a brief teaching career MacCracken entered the Presbyterian ministry in 1863. From 18...

Prescott, Edward Christian

(Encyclopedia)Prescott, Edward Christian, 1940–, American economist, b. Glen Falls, N.Y., Ph.D. Carnegie Mellon Univ., 1967. Prescott has taught at Carnegie Mellon (1971–80), the Univ. of Minnesota (1980–98, ...