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given duty, experimental or operative; any complex instrument or appliance, mechanical or chemical, for a specific action or operation; machinery; mechanism.

nd Cygnus and preceding the Dolphin; the Eagle. Aquila alba Etym: [L., white eagle], an alchemical name of calomel. Brande & C.

A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness. Rayleigh and Ramsay.

the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356º Fahrenheit. It is sometimes found native, but usually comb…

A low fire used in chemical operations.

To subject, as an ore, alloy, or other metallic compound, to chemical or metallurgical examination, in order to determine the amount of a particular metal contained in it, or to ascertain its composition.

ce treating of the physical characteristics of the stars and other heavenly bodies, their chemical constitution, light, heat, atmospheres, etc.

losophy. -- Atomic theory, or the Doctrine of definite proportions (Chem.), teaches that chemical combinations take place between the supposed ultimate particles or atoms of bodies, in some simple ratio, as of one to one, two to three, or some other, always expressible in whole numbers. -- Atomic weight (Chem.), the…

The beginning of corrosive, decomposing, or destructive action, by a chemical agent.

To make thin or slender, as by mechanical or chemical action upon inanimate objects, or by the effects of starvation, disease, etc., upon living bodies.

Chemical decomposition brought about by bacteria without the addition of oxygen.

h previously dyed of a uniform red or dark color, by discharging portions of the color by chemical means, while the rest of the cloth is under pressure. Ure.

toplasm, covering a large part of the ocean bed. It is now known that the substance is of chemical, not of organic, origin.

In the composition of chemical names bi- denotes two atoms, parts, or equivalents of that constituent to the name of which it is prefixed, to one of the other component, or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably.…

tion round their common center of gravity. -- Binary theory (Chem.), the theory that all chemical compounds consist of two constituents of opposite and unlike qualities.

extracted from vegetable products, having strong bitter taste but with no sharply defined chemical characteristics. -- Bitter salt, Epsom salts;; magnesium sulphate. -- Bitter vetch (Bot.), a name given to two European leguminous herbs, Vicia Orobus and Ervum Ervilia. -- To the bitter end, to the last extremity, how…

ho, or that which, blanches or whitens; esp., one who anneals and cleanses money; also, a chemical preparation for this purpose.

ocess of whitening, by removing color or stains; esp. the process of whitening fabrics by chemical agents. Ure. Bleaching powder, a powder for bleaching, consisting of chloride of lime, or some other chemical or chemicals.

A long, straightnecked, glass vessel for chemical distillations; -- called also a matrass or receiver.

A unit of chemical attraction; as, oxygen has two bonds of affinity. It is often represented in graphic formulæ by a short line or dash. See Diagram of Benzene nucleus, and Valence. Arbitration bond. See under Arbitration. -- Bond crediter (Law), a creditor whose debt is secured by a bond. Blackstone. -- Bond debt (L…