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Southdown sheep

(Encyclopedia)Southdown sheep, mutton breed of sheep originated on the South Downs of Sussex, England, and now raised throughout the world. It is a small sheep, the most thickset of all breeds, and it is valued for...

ammonium sulfate

(Encyclopedia)ammonium sulfate, chemical compound, (NH4)2SO4, a colorless-to-gray, rhombohedral crystalline substance that occurs in nature as the mineral mascagnite. It is soluble in water and insoluble in alcohol...

fulminate

(Encyclopedia)fulminate fŭlˈmĭnāt [key], any salt of fulminic acid, HONC, a highly unstable compound known only in solution. The term is most commonly applied to the explosive mercury (II) fulminate, also calle...

Foulis, Andrew

(Encyclopedia)Foulis, Andrew foulz [key], 1712–75, and Robert Foulis, 1707–76, Scottish printers, brothers. They worked in partnership as printers to the Univ. of Glasgow. Their publications were famous both fo...

Albright, Ivan Le Lorraine

(Encyclopedia)Albright, Ivan Le Lorraine ôlˈbrīt [key], 1897–1983, American painter, b. North Harvey, Ill. Allied with the Magic Realist group, Albright developed a style combining American scene painting with...

Ferris, Woodbridge Nathan

(Encyclopedia)Ferris, Woodbridge Nathan, 1853–1928, American educator and public official, b. Tioga co., N.Y. After study (1873–74) at the Univ. of Michigan, he taught in country schools, and became a successfu...

patina

(Encyclopedia)patina pătˈənə [key], coating of carbonate of copper on articles of copper or bronze, formed after long exposure to a moist atmosphere or burial in the earth. Although commonly green, patina varie...

Valle, Pietro della

(Encyclopedia)Valle, Pietro della pyĕˈtrō dĕlˈlä välˈlā [key], 1586–1652, Italian traveler in Asia. He sailed (1614) from Venice; spent a year in Constantinople, where he studied Turkish and Arabic; then...

cerussite

(Encyclopedia)cerussite sērˈəsīt [key], colorless to white or gray mineral, sometimes yellowish or greenish, transparent to opaque, very brittle, crystallizing in the orthorhombic system and occurring also in g...

White, Stewart Edward

(Encyclopedia)White, Stewart Edward, 1873–1946, American author, b. Grand Rapids, Mich., grad. Univ. of Michigan, 1895. The stories collected in The Claim Jumpers (1901) and The Blazed Trail (1902) reflect his ow...