n vitriol,) a bright green mineral
substance, formed by the decomposition of a peculiar ore of iron, called
pyrites, which is a sulphuret of iron. It is first in the form of a
greenish-white powder, or crust, which is dissolved in water, and
beautiful green crystals of copperas are obtained by evaporation. It is
principally used in dyeing, and in making black ink. Its solution, mixed
with a decoction of oak bark, produces a black color.

_Coronary_, relating to a crown or garland. In anatomy, it is applied to
arteries which encompass the heart, in the manner, as it is fancied, of
a garland.

_Corrosive sublimate_, a poisonous substance, composed of chlorine and
quicksilver.

_Cosmetics_, preparations which some people foolishly think will
preserve and beautify the skin.

_Cream of tartar_, see _Tartar_.

_Crimping-iron_, an instrument for crimping or curling ruffles, &c.

_Curculio_, a weevil or worm, which affects the fruit of the plum tree,
and sometimes that of the apple tree, causing the unripe fruit to fall
to the ground.

_Curvature of the spine_, see pages 80, 81.

_Cuvier, Baron_, the most eminent naturalist of the present age, was
born, A. D. 1769, and died, A. D. 1832. He was Professor of Natural
History in the College of France, and held various important posts under
the French Government, at different times. His works on Natural History
are of the greatest value.

_Cynosure_, the star near the North Pole, by which sailors steer. It is
used, in a figurative sense, as synonymous with _pole-star_, or _guide_.

_De Tocqueville_, see _Tocqueville_.

_Diamond cement_, a cement sold in the shops, and used for mending
broken glass, and similar articles.

_Drab_, a thick woollen cloth, of a light brown or dun color. The name
is sometimes used for the color itself.

_Dredging-box_, a box with holes in the top, used to sift or scatter
flour on meat, when roasting.

_Drill_, (in husbandry,) to sow grain in rows, drills, or channels; the
row of grain so sowed.

_Duchess of Orleans_, see _Orleans_.

The _East_, and the _Eastern States_, those of the United States
situated in the north-east part of the Country, including Maine, New
Hampshire, Massachusetts, Rhode Island, Connecticut, and Vermont.

_Electuary_, a mixture, consisting of medicinal substances, especially
dry powders, combined with honey or sirup, in order to render them less
unpleasant to the taste, and more convenient for internal use.