Columbia Encyclopedia

(Encyclopedia) Capetians kəpēˈshənz [key], royal house of France that ruled continuously from 987 to 1328; it takes its name from Hugh Capet. Related branches of the family (see Valois; Bourbon) ruled France unt...

(Encyclopedia) obsidian ŏbsĭdˈēən [key], a volcanic glass, homogeneous in texture and having a low water content, with a vitreous luster and a conchoidal fracture. The color is commonly black, but may be some s...

(Encyclopedia) Felipe. For Spanish rulers thus named, use Philip.

(Encyclopedia) Margaret of Parma, 1522–86, Spanish regent of the Netherlands; illegitimate daughter of Holy Roman Emperor Charles V. She was married (1536) to Alessandro de' Medici (d. 1537) and (1538) to Ottavio ...

(Encyclopedia) Charles VI, 1685–1740, Holy Roman emperor (1711–40), king of Bohemia (1711–40) and, as Charles III, king of Hungary (1712–40); brother and successor of Holy Roman Emperor Joseph I. Charles was...

(Encyclopedia) Demetrius II, d. 229 b.c., king of Macedon (239–229 b.c.), son of Antigonus II. His reign was a confusion of wars and invasions, mostly concerned with possession of Epirus. The Aetolian League and t...

(Encyclopedia) Hawkesbury, town, SE Ont., Canada, on the Ottawa River. It has lumber and paper mills and manufactures clothing, glass, and prefabricated homes. ...

(Encyclopedia) firing, process of treating clay or other plastic ceramic materials with heat to produce a hard, durable but brittle material such as pottery. Primitive potters baked their clay in an open fire, but f...

(Encyclopedia) greenhouse, enclosed glass house used for growing plants in regulated temperatures, humidity, and ventilation. A greenhouse can range from a small room carrying a few plants over the winter, to an imm...

(Encyclopedia) John I or John the Posthumous, 1316, king of France, posthumous son of King Louis X. He lived only five days and was succeeded by his uncle, Philip V. According to legend, a dying child was substitute...