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mineral

(Encyclopedia)mineral, inorganic substance occurring in nature, having a characteristic and homogeneous chemical composition, definite physical properties, and, usually, a definite crystalline form. A few of the mi...

Plutarch

(Encyclopedia)Plutarch plo͞oˈtärk [key], a.d. 46?–c.a.d. 120, Greek essayist and biographer, b. Chaeronea, Boeotia. He traveled in Egypt and Italy, visited Rome (where he lectured on philosophy) and Athens, an...

coast protection

(Encyclopedia)coast protection, methods used to protect coastal lands from erosion. Beaches can exist only where a delicate dynamic equilibrium exists between the amount of sand supplied to the beach and the inevit...

pear

(Encyclopedia)pear, name for a fruit tree of the genus Pyrus of the family Rosaceae (rose family) and for its fruit, a pome. The common pear (P. communis) is one of the earliest cultivated of fruit trees, both in i...

protective coloration

(Encyclopedia)protective coloration, coloration or color pattern of an animal that affords it protection from observation either by its predators or by its prey. The most widespread form of protective coloration is...

Hart, John

(Encyclopedia)Hart, John, 1711?–1779, political leader in the American Revolution, signer of the Declaration of Independence, b. Hopewell Township, N.J. A prosperous farm and mill owner, he was a member of the pr...

Reeve, Tapping

(Encyclopedia)Reeve, Tapping, 1744–1823, American lawyer and jurist, b. Brookhaven, N.Y. In 1784 he opened his law school in Litchfield, Conn.; it was one of the first schools of law in the United States. Aaron B...

cat

(Encyclopedia)cat, name applied broadly to the carnivorous mammals constituting the family Felidae, and specifically to the domestic cat, Felis catus. The great roaring cats, the lion, tiger, and leopard are anatom...

Christie's

(Encyclopedia)Christie's, English firm of art auctioneers and appraisers, one of the largest clearinghouses in the world for art objects of all kinds. Founded in 1766 by James Christie, it has locations all over th...

Exeter Book

(Encyclopedia)Exeter Book, manuscript volume of Old English religious and secular poetry, of various dates of composition, compiled c.975 and given to Exeter Cathedral by Bishop Leofric (d. 1072). See edition by G...