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An oxychloride of copper, usually in emerald-green prismatic crystals.

Like ink; suitable for making ink. Sulphate of iron (copperas, green vitriol) is called atramentarious, as being used in making ink.

to; to certify; to affirm to be true or genuine; as, to attest the truth of a writing, a copy of record. Facts . . . attested by particular pagan authors. Addison.

A genus of jellyfishes. See Discophora.

A hydrous carbonate of copper and zinc, found in pale green or blue crystalline aggregations. It yields a kind of brass on reduction.

(immediate auscultation) applied to parts of the body, as the abdomen; or with the stethoscope (mediate ~), in order to distinguish sounds recognized as a sign of health or of disease.

Having its own head; independent of episcopal or patriarchal jurisdiction, as certain Greek churches.

on gelatin are impressed into a soft metal plate, from which the printing is done as from copperplate.

ght line passing through its center and perpendicular to its surfaces. -- Axis of a telescope or microscope, the straight line with which coincide the axes of the several lenses which compose it. -- Axes of coördinates in a plane, to straight lines intersecting each other, to which points are referred for the purpose…

Blue carbonate of copper; blue malachite.

A soft white alloy of variable composition (as a nine parts of tin to one of copper, or of fifty parts of tin to five of antimony and one of copper) used in bearings to diminish friction.

A variety of bacterium; a microscopic, rod-shaped vegetable organism.

c. Hop back, Jack back, the cistern which receives the infusion of malt and hops from the copper. -- Wash back, a vat in which distillers ferment the wort to form wash. -- Water back, a cistern to hold a supply of water; esp. a small cistern at the back of a stove, or a group of pipes set in the fire box of a stove o…

A microscopic vegetable organism, belonging to the class Algæ, usually in the form of a jointed rodlike filament, and found in putrefying organic infusions. Bacteria are destitute of chlorophyll, and are the smallest of microscopic organisms. They are very widely diffused in nature, and multiply with marvelous rapidity…

erous tree, Abies balsamea, from which the useful Canada balsam is derived. -- Balsam of copaiba. See Copaiba. -- Balsam of Mecca, balm of Gilead. -- Balsam of Peru, a reddish brown, syrupy balsam, obtained from a Central American tree ( Myroxylon Pereiræ and used as a stomachic and expectorant, and in the treatment…

Impure soda obtained from the ashes of any seashore plant, or kelp. Ure. Copper barilla (Min.), native copper in granular form mixed with sand, an ore brought from Bolivia; -- called also Barilla de cobre.

A thermal cymoscope which operates by increased resistance when subjected to the influence of electric waves. The original form consisted of an extremely fine platinum wire loop attached to terminals and inclosed in a small glass or silver bulb. In a later variety, called the liquid barretter, wire is replace by a colu…

s. -- Bath metal, an alloy consisting of four and a half ounces of zinc and one pound of copper. -- Bath note, a folded writing paper, 8 1/2 by 14 inches. -- Bath stone, a species of limestone (oölite) found near Bath, used for building.

sting of alternate solids and open spaces. At first purely a military feature, afterwards copied on a smaller scale with decorative features, as for churches.

A small copper coin, with a mixture of silver, formerly current in some parts of Germany and Switzerland. It was worth about four cents.