Columbia Encyclopedia

(Encyclopedia) topaz tōˈpăz [key], aluminum silicate mineral with either hydroxyl radicals or fluorine, Al2SiO4(F,OH)2, used as a gem. It is commonly colorless or some shade of pale yellow to wine-yellow; pale bl...

(Encyclopedia) towhee tōˈhē, tōhēˈ, to͞oˈhē [key], common name for a North American bird of the family Fringillidae (finch family). Towhees are also called chewinks, for their call, and ground robins, becau...

(Encyclopedia) Williams, Eleazer ĕlēāˈzər [key], c.1787–1858, missionary among Native North Americans. He was the son of Thomas Williams, a St. Regis Native American chief, and a white woman; he was educated ...

(Encyclopedia) rockfish, member of the family Sebastidae (rockfishes) according some authorities, but also classified as a member of the family Scorpaenidae (scorpionfishes, lionfishes, and rockfishes) by other auth...

(Encyclopedia) sapphire, precious stone. A transparent blue corundum, it is classified among the most valuable of gems. Sapphires are found chiefly in Madagascar, Sri Lanka, and Myanmar and also in Thailand, Tanzani...

(Encyclopedia) tanager tănˈəjər [key], any of the small, migratory perching birds of the family Thraupidae, chiefly of the tropical New World. Only five species migrate to North America; of these the scarlet tan...

(Encyclopedia) Tarleton, Sir Banastre băˈnəstər tärlˈtən [key], 1754–1833, British army officer in the American Revolution. He arrived (1775) in America with General Cornwallis and was a member of the patro...

(Encyclopedia) Seuss, Dr., pseud. of Theodor Seuss Geisel, 1904–91, American author and illustrator of children's books, b. Springfield, Mass, grad. Dartmouth College, studied Lincoln College, Oxford. After workin...

(Encyclopedia) epiphyte ĕpˈəfītˌ [key] or air plant, any plant that does not normally root in the soil but grows upon another living plant while remaining independent of it except for support (thus differing fr...

(Encyclopedia) froghopper or spittlebug, small, hopping insect of the order Homoptera. The adult, under 1⁄2 in. (1.2 cm) long in most species, is triangular in shape and usually gray or dull green to brown. Most f...