Columbia Encyclopedia

(Encyclopedia) Atkins, Anna, 1799–1871, English photographer and botanist who specialized in images of botanical specimens. The daughter of scientist John George Children, she married John Pelly Atkins in 1825. Sh...

(Encyclopedia) Denali, formerly Mount McKinley, peak, 20,310 ft (6,190 m) high, S central Alaska, in the Alaska Range; highest point in North America. Permanent snowfields cover more than half the mountain and feed ...

(Encyclopedia) Bradford, William, 1722–91, American Revolutionary printer and patriot; grandson of William Bradford (1663–1752). He learned printing from his uncle, Andrew Bradford, in Philadelphia, and in 1742 ...

(Encyclopedia) Aha of Shabcha äˈkhī [key], c.680–c.762, Babylonian rabbi. He settled (c.752) in Palestine after being passed over for appointment as head of the rabbinic academy of Pumbedita for political reaso...

(Encyclopedia) Hooker, John Lee, 1917–2001, American blues singer and guitarist, b. near Clarksdale, Miss. From a cotton-sharecropping family, he learned the blues from his stepfather and various visiting Delta bl...

(Encyclopedia) Sigurðsson, Jón yōn sĭˈkhürᵺsōn [key], 1811–79, Icelandic statesman and historian. A student in Copenhagen from 1833, he developed an interest in Icelandic literature and history, on which ...

(Encyclopedia) Sylvester II, c.945–1003, pope (999–1003), a Frenchman (b. Auvergne) named Gerbert; successor of Gregory V. In his youth he studied at Muslim schools in Spain and became learned in mathematics and...

(Encyclopedia) Warm Springs, resort, Meriwether co., W Ga. The salutary properties of the water springing from Pine Mt. were known to Native Americans, and white settlers learned of them in the late 18th cent. By th...

(Encyclopedia) Weiser, Conrad wīzˈər [key], 1696–1760, American pioneer, b. Württemberg, Germany. Arriving in America in 1710, his family settled in Livingston Manor, N.Y., and later at Schoharie. While still ...

(Encyclopedia) behavior therapy or behavior modification, in psychology, treatment of human behavioral disorders through the reinforcement of acceptable behavior and suppression of undesirable behavior. The techniqu...