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Hercules'-club
(Encyclopedia)Hercules'-club, common name for several small, thorny trees, chiefly the devil's-walking-stick of the family Aralaceae (ginseng family) and the prickly ash of the family Rutaceae (orange family). The ...bone china
(Encyclopedia)bone china, variety of porcelain developed by English potters in the last half of the 18th and early 19th cent. The clay is tempered with phosphate of lime or bone ash. This innovation greatly increas...Calbuco
(Encyclopedia)Calbuco, active volcano, 6,570 ft (2,003 m), Llanquihue prov., S central Chile, in the Andes on SE shore of Lake Llanquihue, 20 mi (32 km) NE of Puerto Montt. An explosive stratovolcano, Calbuco under...potassium carbonate
(Encyclopedia)potassium carbonate, chemical compound, K2CO3, white, crystalline, deliquescent substance that forms a strongly alkaline water solution. It is available commercially as a white, granular powder common...Tambora
(Encyclopedia)Tambora tämˈbərə [key], active volcano, N Sumbawa, Nusa Tenggara Barat prov., Indonesia, rising to 9,255 ft (2,821 m). The volcano's 1815 eruption was one of the most destructive in historical tim...Pacaya
(Encyclopedia)Pacaya, volcanic massif, 8,373 ft (2,552 m) high, S central Guatemala, 19 mi (30 km) S of Guatemala City, on the southern edge of the ancient caldera that contains Lake Amatitlán. One of the world's ...Rock Springs
(Encyclopedia)Rock Springs, city (1990 pop. 19,050), alt. c.6,270 ft (1,910 m), Sweetwater co., SW Wyo., on Bitter Creek; inc. 1888. It is a cattle and sheep shipping point and the center of large natural trona min...Katmai National Park and Preserve
(Encyclopedia)Katmai National Park and Preserve kătˈmī [key], at the northern end of the Alaska Peninsula on Shelikof Strait, S Alaska, comprising Katmai National Park (3,674,530 acres/1,487,664 hectares) and an...Eyjafjallajökull
(Encyclopedia)Eyjafjallajökull āˈyäfyätläyöˌkŭtl [key], glacier, S Iceland, near the coast. Roughly 39 sq mi (100 sq km) in area, it covers an active volcano, 5,466 ft (1,666 m) high, also known by the sam...Irazú
(Encyclopedia)Irazú ēräso͞oˈ [key], active volcano, c.11,260 ft (3,430 m) high, central Costa Rica, E of San José. A massive volcano, Irazú erupted in 1723, destroying Cartago, and since then it has erupted ...Browse by Subject
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