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Mexico, Gulf of

(Encyclopedia)Mexico, Gulf of, arm of the Atlantic Ocean, c.700,000 sq mi (1,813,000 sq km), SE North America. The Gulf stretches more than 1,100 mi (1,770 km) from west to east and c.800 mi (1,290 km) from north t...

Morse code

(Encyclopedia)CE5 Morse code [for S. F. B. Morse], the arbitrary set of signals used on the telegraph (see code). It may also be used with a flash lamp for visible signaling. The international (or continental) M...

Mackenzie, Sir Alexander, Canadian fur trader and explorer

(Encyclopedia)Mackenzie, Sir Alexander, 1764?–1820, Canadian fur trader and explorer, b. Scotland. His family took him to the colony of New York in 1774, and later he was sent to Canada. He entered (c.1779) a Mon...

mantle

(Encyclopedia)mantle, portion of the earth's interior lying beneath the crust and above the core. No direct observation of the mantle, or its upper boundary, has been made; its boundaries have been determined solel...

King, Rufus

(Encyclopedia)King, Rufus, 1755–1827, American political leader, b. Scarboro, Maine (then a district of Massachusetts). He served briefly in the American Revolution and practiced law in Massachusetts before servi...

Mühlenberg, Heinrich Melchior

(Encyclopedia)Mühlenberg, Heinrich Melchior myo͞oˈlənbûrg [key], 1746–1807, American clergyman, Revolutionary officer, and legislator, eldest son of Heinrich, was born in Trappe, Pa., and studied at Halle. A...

Harlem

(Encyclopedia)Harlem, residential and business section of upper Manhattan, New York City, bounded roughly by 110th St., the East River and Harlem River, 168th St., Amsterdam Ave., and Morningside Park. The Dutch se...

Trumbull, John , American painter

(Encyclopedia)Trumbull, John, 1756–1843, American painter, b. Lebanon, Conn.; son of Gov. Jonathan Trumbull. He served in the Continental Army early in the Revolution as an aide to Washington. He resigned his com...

Washington Monument

(Encyclopedia)Washington Monument, obelisk-shaped tower, 555 ft 51⁄9 in. (169.3 m) high, located on a 106-acre (43-hectare) site at the west end of the Mall, Washington, D.C.; dedicated 1885. The world's tallest ...

Adams, Samuel

(Encyclopedia)Adams, Samuel, 1722–1803, political leader in the American Revolution, signer of the Declaration of Independence, b. Boston, Mass.; second cousin of John Adams. An unsuccessful businessman, he becam...