(Encyclopedia) Devolution, War of, 1667–68, undertaken by Louis XIV for the conquest of the Spanish Netherlands. On her marriage to Louis, Marie Thérèse, daughter of Philip IV of Spain, had renounced…
(Encyclopedia) diseases of plants. Most plant diseases are caused by fungi, bacteria, and viruses. Although the term disease is usually used only for the destruction of live plants, the action of dry…
(Encyclopedia) division of labor, in economics, the specialization of the functions and roles involved in production. Division of labor is closely tied with the standardization of production, the…
(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…
(Encyclopedia) Dover, Strait of, separating Great Britain from France and connecting the English Channel with the North Sea. It is 21 mi (34 km) wide between Dover and Cape Gris-Nez, near Calais, and…
(Encyclopedia) Allen, Bog of, area of several peat bogs c.375 sq mi (971 sq km), with patches of cultivable land, in the central lowlands, E Republic of Ireland. The bog is crossed by the Grand and…
