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A glucoside obtained from the Æsculus hippocastanum, or horse- chestnut, and characterized by its fine blue fluorescent solutions. [Written also æsculin.]

ent of the port (Hydrography), a datum on which the tides are computed at the given port, obtained by observation, viz., the interval between the moon's passage over the meridian and the time of high water at the port, on the days of new and full moon.

Without end of existence or duration; everlasting; endless; immortal. That they may also obtain the salvation which is in Christ Jesus, with eternal glory. 2 Tim. ii. 10.

light, volatile, mobile, inflammable liquid, (C2H5)2O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anæsthetic. Called also ethyl oxide.ethyl eth…

A white, crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether; -- formerly called also concrete oil of wine.

hionic acid (Chem.), a liquid derivative of ethylsulphuric and sulphuric (thionic) acids, obtained by the action of sulphur trioxide on absolute alcohol.

Chem.), black oxide of iron. -- Ethiops mineral (Old Chem.), black sulphide of mercury, obtained by triturating mercury with sulphur. -- Ethiops per se (Old Chem.), mercury in finely divided state, having the appearance of a dark powder, obtained by shaking it up or by exposure to the air.

gaseous hydrocarbon, C2H4, forming an important ingredient of illuminating gas, and also obtained by the action of concentrated sulphuric acid in alcohol. It is an unsaturated compound and combines directly with chlorine and bromine to form oily liquids (Dutch liquid), -- hence called olefiant gas. Called also ethene,…

An unfermentable sugar, obtained as an uncrystallizable sirup by the decomposition of melitose; also obtained from a Tasmanian eucalyptus, -- whence its name.

Having a fine color. Euchroic acid (Chem.), an organic, imide acid, obtained as a colorless crystalline substance, C12H4N2O8 by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance (euchrone), -- hence its name.

A substance obtained from euchroic acid. See Eychroic.

A limpid, oily liquid obtained by the destructive distillation of various vegetable and animal substances; -- specifically, an oil consisting largely of the higher hydrocarbons of the paraffin series. [Written also eupion.]

A yellow, crystalline substance, resembling aurin, and obtained by the oxidation of pittacal; -- called also eupittonic acid. [Written also eupitton.]

A contrivance for obtaining a light instantaneous, as a lucifer match. Brande & C.

-- said of an alloy or mixture which has the lowest melting point which it is possible to obtain by the combination of the given components.

A yellow pigment imported from India and China. It has a strong odor, and is said to be obtained from the urine of herbivorous animals when fed on the mango. It consists if a magnesium salt of euxanthic acid. Called also puri, purree, and Indian yellow.

The transformation of a portion of a fluid into vapor, in order to obtain the fixed matter contained in it in a state of greater consistence.

racter or state of; to subject to inquiry or inspection of particulars for the purpose of obtaining a fuller insight into the subject of examination, as a material substance, a fact, a reason, a cause, the truth of a statement; to inquire or search into; to explore; as, to examine a mineral; to examine a ship to know w…

cal or experiential . . . because it is divan to us by experience or observation, and not obtained as the result of inference or reasoning. Sir. W. Hamiltion. -- Ex*pe`ri*en"tial*ly, adv. DR. H. More.

dandelion; also, any substance so extracted, and characteristic of that from which it is obtained; as, quinine is the most important extract of Peruvian bark.