(Encyclopedia) copper sulfate, common name for the blue crystalline heptahydrate of cupric sulfate, in which copper has valence +2. It may also refer to cuprous sulfate (Cu2SO4), in which copper has…
(Encyclopedia) coffee tree, Kentucky, common name for the plant species Gymnocladus dioica, a tree of the family Leguminosae (pulse family) and native to the E United States. The seeds of the woody…
(Encyclopedia) Patroon painters, group of portraitists active in colonial New York from 1715 to 1730. Their work embodied the first clearly American style. The Patroon painters served the Dutch…
(Encyclopedia) Bunsen burner, gas burner, commonly used in scientific laboratories, consisting essentially of a hollow tube which is fitted vertically around the flame and which has an opening at the…
(Encyclopedia) murremurremör [key], common name for a group of diving birds of the same family as the auk and the puffin (family Alcidae) and including the guillemots. There are three species of…
(Encyclopedia) scallop or pecten, marine bivalve mollusk. Like its close relative the oyster, the scallop has no siphons, the mantle being completely open, but it differs from other mollusks in that…
(Encyclopedia) tarweed, any of several related resinous herbs (chiefly species of Hemizonia and Madia) of the family Asteraceae (aster family), having strongly scented and sticky herbage. Most North…
(Encyclopedia) corundumcorundumkərŭnˈdəm [key], mineral, aluminum oxide, Al2O3. The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in crystals of the hexagonal…
(Encyclopedia) darter or anhingadarterănhĭngˈgə [key], common name for a very slender, black water bird very closely related to the cormorant. It frequents the wooded borders of freshwater lakes,…
(Encyclopedia) OneidaOneidaōnīˈdə [key], city (1990 pop. 10,850), Madison co., central N.Y.; inc. 1901. Tableware was long the best-known product, and some is still manufactured in neighboring…
