test tube

1. Chem.: A narrow tube from three to six inches in length, closed at one end, made of very thin 2. A chlorometer (q. v.). 2. Chem . Any substance employed to bring about gla , and furnished with a smooth lip. a chemical change in a compound, with the view of detecting one or more of its constituents. The change may be one of color, precipitation, heat, evolution of gas, . This term is also sometimes applied to examination by the polariscope and blow-pipe, thus, the polariscope-test, the blowpipe test. [REAGENT.] 3. Metall .: A cupeling-hearth used in a refining furnace where lead is separated from silver on a large scale. The test is an oval iron frame containing a basin-shaped ma of powdered bone-ash, which is brought to a consistence by a solution of pearlash. The test is fixed as a cupeling-hearth in the reverberatory furnace, and is subjected to a blast from a tuyere, which removes the floating oxide of silver and furnishes oxygen for its elimination from the alloy under treatment. 4. Sugar - man.: The proof or condition of a syrup. 5. Zoology: (1) The shell of any of the Mollusca. (2) The calcareous case of Echinoderm at a. (3) The thick leathery tunic of Tunic at a. *těst (2) s. [Lat. testis a witne .] 1. A witne . 2. Inspection, oversight, superintendence. "In his publication he urged the notoriousne of the fact as a thing not feigned, not private, but done at noon day under the test of competent persons."-Bp. Taylor: Rule of Conscience, bk. i., ch. iv. těst (1), v. t. [TEST (1), s.] I. Ord. Lang.: To put to the test; to try; to prove the genuinene or truth of by experiment, or by some fixed principle or standard; to compare with a standard. II. Technically : 1. Chem.: To examine by the application of some reagent. 2. Metall.: To refine as gold or silver, by means of lead, in a test, by the destruction, vitrification, or scorification of all extraneous matter. těst (2), v. t. & i. [Latin test or =to bear witne , (4) The shell immersed in the sarcode of a For a to testify; to attest; testis a witne .] minifer. Test Act, s. English History: 1. An act pa ed in 1563 by which an oath of alle giance to Queen Elizabeth, and of abjuration of the temporal authority of the Pope, was exacted from all holders of office, lay or spiritual, within the realm, except peers. "But the Test Act placed the magistracy in Protestant hands, and, as Elizabeth pa ed from indifference to suspicion, and from suspicion to terror, she no longer chose to restrain the bigotry around her." -Green: Short History, p. 401. 2. An Act, 2 Car. II., c. 2, pa ed in 1678, by which t was enacted that all persons holding any important office, civil or military, under the crown, or receiving money therefrom, should take the oaths of allegiance and supremacy, subscribe a declara tion against transubstantiation, and receive the sacrament of the Lord's Supper, according to the usage of the Established Church. It was repealed in 1828, by 9 Geo. IV., c. 17. IMG:content-0939.png:[blocks in formation] A. Trans.: To attest and date; as, a document tested on such and such a day. B. Intransitive : To make a will or testament. ( Scotch .) těsta ( pl. těs'-tæ), s. [Latin=a brick, a tile, a shell.] Bot .: The integuments of a seed, or the outer integument as distinguished from the inner one, or tegmen. Called also the Primine (q. v.).