tetrahedrite

[Eng. tetrahedr(on); suff. -ite ( Min.); Gor. fahlerz, tetraedrit.] Min .: A name given to a group of minerals having considerable diversity in composition, but presenting the same general formula. Named from the pine, pit, sire, sir, marine; gō, pot, The American Dictionary and Cyclopedia Chem.: A crystalline ma obtained by heating to 100° one volume of ethylenic bromide with volumes of methylic sulphide. It is soluble in hot water and alcohol, insoluble in ether, and is pre- cipitated by ether from its alcoholic solution, in white prisms. form, figure.] tět-ra-morph, s. [Pref. tetra- , and Gr. morphe the evangel is's in one figure, winged, standing on Christ. Art : The union of the four attributes of winged, fiery wheels, the wings being covered with eyes. It is the type of unparalleled velocity. ( Fair- holt .) Bot.: Any individual of the Tetrandria (q. v.). tě trăn-dri-a, s . pl . [Pref. tetra- , and Gr. aner (gen it. andros )=a male.] Bot.: The fourth cla in Linnæus' Artificial System. It consists of plants having four stamens of equal length. Orders: Monogynia, Digynia, and Tetragynia. by bracts. The fruit of Tet rant her a roxburghii yields a fatty exudation. The fruit of T. laurifolia , a moderate-sized Indian and Javanese tree, yields an oil. The seeds of T. mono petal a , also an Indian tree, furnish an oil used for ointment and for can- dles. The oil from the berries of T. laurifolia is used in rheumatism, the bark saturated in water or milk is applied to bruises. It is given internally in diarrhea, dysentery, . The tree has a fine wood. The bark of T. mono petal a is mildly astringent and has balsamic properties. It is used medicinally like the oil from the former species. tě-trăn-y-chus, s. [Pref. tetra- , and Gr. onyx (gen it. onychos ) =a claw.] Zoology : A genus of Trombidiide. Tetranychus telarius is the Red Spider (q. v.). T. glaber is found under stones in damp places, and T. lapidum under stones and on plants. tět-rā-ō, s . [Lat., from Gr. tetraōn =the black- cock.] 2. Palæont .: From the Post-pliocene of Italian tě-tra-o-don, s . [TETRODON.] IMG:content-0949.png:[blocks in formation] Tetrapolitan Confe ion Tetrapolitan Confe ion, s . Symbolic Books : The Confe ion of Faith presented to the Diet of Augsburg in 1530 by the representatives of the cities of Con stance, Lindau, Memmingen, and Strasburg. It was the same as the Confe ion of Augsburg, except in a minute verbal difference in the part relating to the Eucharist.