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Helmholtz, Hermann Ludwig Ferdinand von

(Encyclopedia)Helmholtz, Hermann Ludwig Ferdinand von hĕrˈmän lo͞otˈvĭkh fĕrˈdēnänt fən hĕlmˈhôlts [key], 1821–94, German scientist. Although known especially as a physicist and biologist, he was al...

harrier, breed of dog

(Encyclopedia)harrier, breed of medium-sized hound whose origin is obscure but whose existence in England dates from the 13th cent. It stands from 19 to 21 in. (48.3–53.3 cm) high at the shoulder and weighs from ...

Girl Scouts

(Encyclopedia)Girl Scouts, recreational and service organization founded (1912) in Savannah, Ga., by Juliette Gordon Low. It was originally modeled after the Boy Scouts (see Scouts) and Girl Guides, organizations c...

indigo

(Encyclopedia)indigo [Span.; from Lat.,=Indian], important blue dyestuff used in printing inks and for vat dyeing of cotton (see dye). It was anciently produced in India and was known in Egypt, probably c.1600 b.c....

Jack Russell terrier

(Encyclopedia)Jack Russell terrier, breed of dog developed in the 19th cent. by an English clergyman, the Rev. John (Parson Jack) Russell, 1795–1883, for hunting. The Jack Russell resembles the fox terrier and, l...

Dalton, John

(Encyclopedia)Dalton, John dôlˈtən [key], 1766–1844, English scientist. He revived the atomic theory (see atom), which he formulated in the first volume of his New System of Chemical Philosophy (2 vol., 1808�...

Dandie Dinmont terrier

(Encyclopedia)Dandie Dinmont terrier dănˈdē dĭnˈmŏnt [key], breed of hardy, long-bodied terrier developed in England and Scotland and first recorded as a distinct type in the very early 18th cent. It stands f...

copperhead

(Encyclopedia)copperhead, poisonous snake, Ancistrodon contortrix, of the E United States. Like its close relative, the water moccasin, the copperhead is a member of the pit viper family and detects its warm-bloode...

English foxhound

(Encyclopedia)English foxhound, breed of medium-sized, swift hound perfected in England in the 17th and 18th cent. It stands from 21 to 25 in. (53.3–63.5 cm) high at the shoulder and weighs from 60 to 70 lb (27.2...

schipperke

(Encyclopedia)schipperke skĭpˈərkē [key], a breed of small nonsporting dog developed in Belgium several hundred years ago. It stands about 13 in. (33 cm) high at the shoulder and weighs from 14 to 18 lb (6.4–...