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Doctrine of Signatures

(Encyclopedia)Doctrine of Signatures, the concept that the key to humanity's use of various plants was indicated by the form of the plant. The red sap of the bloodroot (Sanguinaria canadensis), for instance, was be...

Daubenton, Louis Jean Marie

(Encyclopedia)Daubenton, Louis Jean Marie lwē zhäN märēˈ dōbäNtôNˈ [key], 1716–1800, French naturalist. He was a professor at the Collège de France from 1778; his work touched many fields—comparative ...

cortex

(Encyclopedia)cortex, in botany, term generally applied to the outer soft tissues of the leaves, stems, and roots of plants. Cortical cells of the leaves and outer layers of nonwoody stems contain chloroplasts, and...

Aizuwakamatsu

(Encyclopedia)Aizuwakamatsu īˈzo͞owäkämätˈso͞o [key], city, Fukushima prefecture, N Honshu, Japan. It has a large semiconductor plant and continues to produce many traditional p...

Shaoguan

(Encyclopedia)Shaoguan kükˈgôngˈ [key], city (1994 est. pop. 403,900), N Guangdong prov., SE China, on the Bei (North) River and the Guangzhou-Wuhan RR. It is a trade center with coal and tungsten mining, a lea...

Shoshone project

(Encyclopedia)Shoshone project, NW Wyo., near the Mont. line and in the Shoshone River basin. Developed by the U.S. Bureau of Reclamation, it irrigates a large portion of land and has four divisions. The project is...

Petrozavodsk

(Encyclopedia)Petrozavodsk pyĕtˌrəzəvôtskˈ [key], city (1989 pop. 269,500), capital of Karelia, NW European Russia, a port on Lake Onega. It produces lumbering equipment and has shipyards, fish canneries, saw...

root crop

(Encyclopedia)root crop, vegetable cultivated chiefly for its edible roots, e.g., the beet, turnip, mangel-wurzel, carrot, and parsnip. All root crops have a large water content and grow best in deeply cultivated s...

Sarpsborg

(Encyclopedia)Sarpsborg särpsˈbôr [key], city (1995 pop. 46,474), Ostfold co., SE Norway, a port on the Glåma River near its mouth in the Oslofjord. Manufactures include forest products, chemicals, textiles, an...

Tracy

(Encyclopedia)Tracy, city (1990 pop. 33,558), San Joaquin co., central Calif., in the San Joaquin valley; inc. 1910. It is a railroad junction in a cattle and dairying region. Grapes, sugar beets, grain, fruit, nut...