Columbia Encyclopedia

(Encyclopedia) Irish terrier, a breed of hardy working terrier developed in the British Isles and believed to be one of the oldest terriers. It stands about 18 in. (46 cm) high at the shoulder and weighs from 25 to ...

(Encyclopedia) Lear, Edward, 1812–88, English humorist and artist. At 19 he was employed as a draftsman by the London Zoological Society; the paintings of parrots that he produced for The Family of the Psittacidae...

(Encyclopedia) Hiroshige (Ando Hiroshige) änˈdō hērōˈshēgāˌ [key], 1797–1858, Japanese painter and color-print artist of the ukiyo-e school. His prolific work includes a series of landscapes (1833) entitl...

(Encyclopedia) optical activity, the ability of asymmetric compounds to rotate the orientation of planar polarized light. Such compounds and their mirror images are know as enantiomers, or optical isomers. Although ...

(Encyclopedia) Ostwald, Wilhelm vĭlˈhĕlm ôstˈvält [key], 1853–1932, German physical chemist and natural philosopher, b. Riga, Latvia. He was professor of chemistry and director of the chemical laboratory (18...

(Encyclopedia) Overbeck, Johann Friedrich yōˈhän frēˈdrĭkh oˈvərbĕk [key], 1789–1869, German religious painter. Expelled from the Vienna Academy because of his opposition to its classicism, he went to Rom...

(Encyclopedia) palmtop or hand-held personal computer, lightweight, small, battery-powered, general-purpose programmable computer. It typically had a miniaturized full-function, typewriterlike keyboard for input and...

(Encyclopedia) asphalt ăsˈfôlt, –fălt [key], brownish-black substance used commonly in road making, roofing, and waterproofing. Chemically, it is a natural mixture of hydrocarbons. It varies in consistency fro...

(Encyclopedia) mastic, resin obtained from the small mastic tree Pistacia lentiscus (of the sumac family), found chiefly in Mediterranean countries. When the bark of the tree is injured, the resin exudes in drops. I...

(Encyclopedia) Percheron horse pûrˈchərŏnˌ [key], breed of draft horse developed in NW France, originally of Flemish origin, but also containing some Arabian blood (see Arabian horse). For a heavy horse, it has...