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Coolidge, William David

(Encyclopedia)Coolidge, William David, 1873–1975, American physical chemist, b. Hudson, Mass., grad. Massachusetts Institute of Technology, 1896. He joined the General Electric Company in 1905 and served as direc...

ground squirrel

(Encyclopedia)ground squirrel, name applied to certain terrestrial rodents of the squirrel family. In North America the name refers to members of the genus Citellus and sometimes to the closely related genera Tamia...

aurora borealis

(Encyclopedia)aurora borealis ôstrāˈlĭs [key], luminous display of various forms and colors seen in the night sky. The aurora borealis of the Northern Hemisphere is often called the northern lights, and the aur...

Cabot, Sebastian

(Encyclopedia)Cabot, Sebastian, b. 1483–86?, d. 1557, explorer in English and Spanish service; son of John Cabot. He may well have accompanied his father on the 1497 and 1498 voyages, and he was for many years gi...

Harrison

(Encyclopedia)Harrison, town (2020 pop. 19,450), Hudson co., NE N.J., a suburb on the Passaic River opposite Newark; inc. 1869. Harrison's industries include chemical...

New Amsterdam

(Encyclopedia)New Amsterdam, Dutch settlement at the mouth of the Hudson River and on the southern end of Manhattan island; est. 1624. It was the capital of the colony of New Netherland from 1626 to 1664, when it w...

Mohawk, river, United States

(Encyclopedia)Mohawk, river, c.140 mi (230 km) long, rising in central New York and flowing S then SE past Utica and Schenectady to enter the Hudson River at Cohoes. The Mohawk is canalized from Rome to its mouth (...

Cole, Thomas

(Encyclopedia)Cole, Thomas, 1801–48, American landscape painter, b. England. He arrived in the United States in 1818 and moved to Ohio, where he was impressed by the beauty of the countryside. In 1825 he went to ...

Nunavut

(Encyclopedia)Nunavut no͞oˈnəvo͞otˌ [key] [Inuktituk,=our land], territory (2001 pop. 26,745), 772,260 sq mi (2,000,671 sq km), NE Canada. The capital and largest town is Iqaluit on Baffin Island at Frobisher ...

fur trade

(Encyclopedia)fur trade, in American history. Trade in animal skins and pelts had gone on since antiquity, but reached its height in the wilderness of North America from the 17th to the early 19th cent. The demand ...